* [PULL 01/28] target/arm/kvm: Retry KVM_CREATE_VM call if it fails EINTR
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 02/28] target/arm: allow setting SCR_EL3.EnTP2 when FEAT_SME is implemented Peter Maydell
` (27 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
Occasionally the KVM_CREATE_VM ioctl can return EINTR, even though
there is no pending signal to be taken. In commit 94ccff13382055
we added a retry-on-EINTR loop to the KVM_CREATE_VM call in the
generic KVM code. Adopt the same approach for the use of the
ioctl in the Arm-specific KVM code (where we use it to create a
scratch VM for probing for various things).
For more information, see the mailing list thread:
https://lore.kernel.org/qemu-devel/8735e0s1zw.wl-maz@kernel.org/
Reported-by: Vitaly Chikunov <vt@altlinux.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Vitaly Chikunov <vt@altlinux.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Message-id: 20220930113824.1933293-1-peter.maydell@linaro.org
---
target/arm/kvm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index e5c1bd50d29..1e4de9b42e3 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -79,7 +79,9 @@ bool kvm_arm_create_scratch_host_vcpu(const uint32_t *cpus_to_try,
if (max_vm_pa_size < 0) {
max_vm_pa_size = 0;
}
- vmfd = ioctl(kvmfd, KVM_CREATE_VM, max_vm_pa_size);
+ do {
+ vmfd = ioctl(kvmfd, KVM_CREATE_VM, max_vm_pa_size);
+ } while (vmfd == -1 && errno == EINTR);
if (vmfd < 0) {
goto err;
}
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 02/28] target/arm: allow setting SCR_EL3.EnTP2 when FEAT_SME is implemented
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
2022-10-10 14:27 ` [PULL 01/28] target/arm/kvm: Retry KVM_CREATE_VM call if it fails EINTR Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 03/28] docs/nuvoton: Update URL for images Peter Maydell
` (26 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Jerome Forissier <jerome.forissier@linaro.org>
Updates write_scr() to allow setting SCR_EL3.EnTP2 when FEAT_SME is
implemented. SCR_EL3 being a 64-bit register, valid_mask is changed
to uint64_t and the SCR_* constants in target/arm/cpu.h are extended
to 64-bit so that masking and bitwise not (~) behave as expected.
This enables booting Linux with Trusted Firmware-A at EL3 with
"-M virt,secure=on -cpu max".
Cc: qemu-stable@nongnu.org
Fixes: 78cb9776662a ("target/arm: Enable SME for -cpu max")
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221004072354.27037-1-jerome.forissier@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/cpu.h | 54 ++++++++++++++++++++++-----------------------
target/arm/helper.c | 5 ++++-
2 files changed, 31 insertions(+), 28 deletions(-)
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 429ed42eece..68d99565ac4 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -1664,33 +1664,33 @@ static inline void xpsr_write(CPUARMState *env, uint32_t val, uint32_t mask)
#define HPFAR_NS (1ULL << 63)
-#define SCR_NS (1U << 0)
-#define SCR_IRQ (1U << 1)
-#define SCR_FIQ (1U << 2)
-#define SCR_EA (1U << 3)
-#define SCR_FW (1U << 4)
-#define SCR_AW (1U << 5)
-#define SCR_NET (1U << 6)
-#define SCR_SMD (1U << 7)
-#define SCR_HCE (1U << 8)
-#define SCR_SIF (1U << 9)
-#define SCR_RW (1U << 10)
-#define SCR_ST (1U << 11)
-#define SCR_TWI (1U << 12)
-#define SCR_TWE (1U << 13)
-#define SCR_TLOR (1U << 14)
-#define SCR_TERR (1U << 15)
-#define SCR_APK (1U << 16)
-#define SCR_API (1U << 17)
-#define SCR_EEL2 (1U << 18)
-#define SCR_EASE (1U << 19)
-#define SCR_NMEA (1U << 20)
-#define SCR_FIEN (1U << 21)
-#define SCR_ENSCXT (1U << 25)
-#define SCR_ATA (1U << 26)
-#define SCR_FGTEN (1U << 27)
-#define SCR_ECVEN (1U << 28)
-#define SCR_TWEDEN (1U << 29)
+#define SCR_NS (1ULL << 0)
+#define SCR_IRQ (1ULL << 1)
+#define SCR_FIQ (1ULL << 2)
+#define SCR_EA (1ULL << 3)
+#define SCR_FW (1ULL << 4)
+#define SCR_AW (1ULL << 5)
+#define SCR_NET (1ULL << 6)
+#define SCR_SMD (1ULL << 7)
+#define SCR_HCE (1ULL << 8)
+#define SCR_SIF (1ULL << 9)
+#define SCR_RW (1ULL << 10)
+#define SCR_ST (1ULL << 11)
+#define SCR_TWI (1ULL << 12)
+#define SCR_TWE (1ULL << 13)
+#define SCR_TLOR (1ULL << 14)
+#define SCR_TERR (1ULL << 15)
+#define SCR_APK (1ULL << 16)
+#define SCR_API (1ULL << 17)
+#define SCR_EEL2 (1ULL << 18)
+#define SCR_EASE (1ULL << 19)
+#define SCR_NMEA (1ULL << 20)
+#define SCR_FIEN (1ULL << 21)
+#define SCR_ENSCXT (1ULL << 25)
+#define SCR_ATA (1ULL << 26)
+#define SCR_FGTEN (1ULL << 27)
+#define SCR_ECVEN (1ULL << 28)
+#define SCR_TWEDEN (1ULL << 29)
#define SCR_TWEDEL MAKE_64BIT_MASK(30, 4)
#define SCR_TME (1ULL << 34)
#define SCR_AMVOFFEN (1ULL << 35)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index db3b1ea72da..c08a7b35a04 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -1752,7 +1752,7 @@ static void vbar_write(CPUARMState *env, const ARMCPRegInfo *ri,
static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
{
/* Begin with base v8.0 state. */
- uint32_t valid_mask = 0x3fff;
+ uint64_t valid_mask = 0x3fff;
ARMCPU *cpu = env_archcpu(env);
/*
@@ -1789,6 +1789,9 @@ static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
if (cpu_isar_feature(aa64_doublefault, cpu)) {
valid_mask |= SCR_EASE | SCR_NMEA;
}
+ if (cpu_isar_feature(aa64_sme, cpu)) {
+ valid_mask |= SCR_ENTP2;
+ }
} else {
valid_mask &= ~(SCR_RW | SCR_ST);
if (cpu_isar_feature(aa32_ras, cpu)) {
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 03/28] docs/nuvoton: Update URL for images
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
2022-10-10 14:27 ` [PULL 01/28] target/arm/kvm: Retry KVM_CREATE_VM call if it fails EINTR Peter Maydell
2022-10-10 14:27 ` [PULL 02/28] target/arm: allow setting SCR_EL3.EnTP2 when FEAT_SME is implemented Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 04/28] target/arm: Split s2walk_secure from ipa_secure in get_phys_addr Peter Maydell
` (25 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Joel Stanley <joel@jms.id.au>
openpower.xyz was retired some time ago. The OpenBMC Jenkins is where
images can be found these days.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Hao Wu <wuhaotsh@google.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20221004050042.22681-1-joel@jms.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
docs/system/arm/nuvoton.rst | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/docs/system/arm/nuvoton.rst b/docs/system/arm/nuvoton.rst
index ef2792076aa..c38df32bde0 100644
--- a/docs/system/arm/nuvoton.rst
+++ b/docs/system/arm/nuvoton.rst
@@ -82,9 +82,9 @@ Boot options
The Nuvoton machines can boot from an OpenBMC firmware image, or directly into
a kernel using the ``-kernel`` option. OpenBMC images for ``quanta-gsj`` and
-possibly others can be downloaded from the OpenPOWER jenkins :
+possibly others can be downloaded from the OpenBMC jenkins :
- https://openpower.xyz/
+ https://jenkins.openbmc.org/
The firmware image should be attached as an MTD drive. Example :
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 04/28] target/arm: Split s2walk_secure from ipa_secure in get_phys_addr
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (2 preceding siblings ...)
2022-10-10 14:27 ` [PULL 03/28] docs/nuvoton: Update URL for images Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 05/28] target/arm: Make the final stage1+2 write to secure be unconditional Peter Maydell
` (24 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
The starting security state comes with the translation regime,
not the current state of arm_is_secure_below_el3().
Create a new local variable, s2walk_secure, which does not need
to be written back to result->attrs.secure -- we compute that
value later, after the S2 walk is complete.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221001162318.153420-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 2ddfc028abb..b8c494ad9f0 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -2298,7 +2298,7 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
hwaddr ipa;
int s1_prot;
int ret;
- bool ipa_secure;
+ bool ipa_secure, s2walk_secure;
ARMCacheAttrs cacheattrs1;
ARMMMUIdx s2_mmu_idx;
bool is_el0;
@@ -2313,17 +2313,17 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
ipa = result->phys;
ipa_secure = result->attrs.secure;
- if (arm_is_secure_below_el3(env)) {
- if (ipa_secure) {
- result->attrs.secure = !(env->cp15.vstcr_el2 & VSTCR_SW);
- } else {
- result->attrs.secure = !(env->cp15.vtcr_el2 & VTCR_NSW);
- }
+ if (is_secure) {
+ /* Select TCR based on the NS bit from the S1 walk. */
+ s2walk_secure = !(ipa_secure
+ ? env->cp15.vstcr_el2 & VSTCR_SW
+ : env->cp15.vtcr_el2 & VTCR_NSW);
} else {
assert(!ipa_secure);
+ s2walk_secure = false;
}
- s2_mmu_idx = (result->attrs.secure
+ s2_mmu_idx = (s2walk_secure
? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2);
is_el0 = mmu_idx == ARMMMUIdx_E10_0 || mmu_idx == ARMMMUIdx_SE10_0;
@@ -2366,7 +2366,7 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
result->cacheattrs);
/* Check if IPA translates to secure or non-secure PA space. */
- if (arm_is_secure_below_el3(env)) {
+ if (is_secure) {
if (ipa_secure) {
result->attrs.secure =
!(env->cp15.vstcr_el2 & (VSTCR_SA | VSTCR_SW));
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 05/28] target/arm: Make the final stage1+2 write to secure be unconditional
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (3 preceding siblings ...)
2022-10-10 14:27 ` [PULL 04/28] target/arm: Split s2walk_secure from ipa_secure in get_phys_addr Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 06/28] target/arm: Add is_secure parameter to get_phys_addr_lpae Peter Maydell
` (23 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
While the stage2 call to get_phys_addr_lpae should never set
attrs.secure when given a non-secure input, it's just as easy
to make the final update to attrs.secure be unconditional and
false in the case of non-secure input.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221007152159.1414065-1-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 21 ++++++++++-----------
1 file changed, 10 insertions(+), 11 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index b8c494ad9f0..7d763a58477 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -2365,17 +2365,16 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
result->cacheattrs = combine_cacheattrs(env, cacheattrs1,
result->cacheattrs);
- /* Check if IPA translates to secure or non-secure PA space. */
- if (is_secure) {
- if (ipa_secure) {
- result->attrs.secure =
- !(env->cp15.vstcr_el2 & (VSTCR_SA | VSTCR_SW));
- } else {
- result->attrs.secure =
- !((env->cp15.vtcr_el2 & (VTCR_NSA | VTCR_NSW))
- || (env->cp15.vstcr_el2 & (VSTCR_SA | VSTCR_SW)));
- }
- }
+ /*
+ * Check if IPA translates to secure or non-secure PA space.
+ * Note that VSTCR overrides VTCR and {N}SW overrides {N}SA.
+ */
+ result->attrs.secure =
+ (is_secure
+ && !(env->cp15.vstcr_el2 & (VSTCR_SA | VSTCR_SW))
+ && (ipa_secure
+ || !(env->cp15.vtcr_el2 & (VTCR_NSA | VTCR_NSW))));
+
return 0;
} else {
/*
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 06/28] target/arm: Add is_secure parameter to get_phys_addr_lpae
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (4 preceding siblings ...)
2022-10-10 14:27 ` [PULL 05/28] target/arm: Make the final stage1+2 write to secure be unconditional Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 07/28] target/arm: Fix S2 disabled check in S1_ptw_translate Peter Maydell
` (22 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Remove the use of regime_is_secure from get_phys_addr_lpae,
using the new parameter instead.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 7d763a58477..96ed8e13afc 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -16,8 +16,8 @@
static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
- bool s1_is_el0, GetPhysAddrResult *result,
- ARMMMUFaultInfo *fi)
+ bool is_secure, bool s1_is_el0,
+ GetPhysAddrResult *result, ARMMMUFaultInfo *fi)
__attribute__((nonnull));
/* This mapping is common between ID_AA64MMFR0.PARANGE and TCR_ELx.{I}PS. */
@@ -207,8 +207,8 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
GetPhysAddrResult s2 = {};
int ret;
- ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, s2_mmu_idx, false,
- &s2, fi);
+ ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, s2_mmu_idx,
+ *is_secure, false, &s2, fi);
if (ret) {
assert(fi->type != ARMFault_None);
fi->s2addr = addr;
@@ -965,8 +965,8 @@ static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level,
*/
static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
- bool s1_is_el0, GetPhysAddrResult *result,
- ARMMMUFaultInfo *fi)
+ bool is_secure, bool s1_is_el0,
+ GetPhysAddrResult *result, ARMMMUFaultInfo *fi)
{
ARMCPU *cpu = env_archcpu(env);
/* Read an LPAE long-descriptor translation table. */
@@ -1183,7 +1183,7 @@ static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
* remain non-secure. We implement this by just ORing in the NSTable/NS
* bits at each step.
*/
- tableattrs = regime_is_secure(env, mmu_idx) ? 0 : (1 << 4);
+ tableattrs = is_secure ? 0 : (1 << 4);
for (;;) {
uint64_t descriptor;
bool nstable;
@@ -2337,7 +2337,7 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
memset(result, 0, sizeof(*result));
ret = get_phys_addr_lpae(env, ipa, access_type, s2_mmu_idx,
- is_el0, result, fi);
+ s2walk_secure, is_el0, result, fi);
fi->s2addr = ipa;
/* Combine the S1 and S2 perms. */
@@ -2504,8 +2504,8 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
}
if (regime_using_lpae_format(env, mmu_idx)) {
- return get_phys_addr_lpae(env, address, access_type, mmu_idx, false,
- result, fi);
+ return get_phys_addr_lpae(env, address, access_type, mmu_idx,
+ is_secure, false, result, fi);
} else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) {
return get_phys_addr_v6(env, address, access_type, mmu_idx,
is_secure, result, fi);
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 07/28] target/arm: Fix S2 disabled check in S1_ptw_translate
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (5 preceding siblings ...)
2022-10-10 14:27 ` [PULL 06/28] target/arm: Add is_secure parameter to get_phys_addr_lpae Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 08/28] target/arm: Add is_secure parameter to regime_translation_disabled Peter Maydell
` (21 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Pass the correct stage2 mmu_idx to regime_translation_disabled,
which we computed afterward.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221001162318.153420-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 96ed8e13afc..631d1e25f15 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -200,10 +200,10 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
hwaddr addr, bool *is_secure,
ARMMMUFaultInfo *fi)
{
+ ARMMMUIdx s2_mmu_idx = *is_secure ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2;
+
if (arm_mmu_idx_is_stage1_of_2(mmu_idx) &&
- !regime_translation_disabled(env, ARMMMUIdx_Stage2)) {
- ARMMMUIdx s2_mmu_idx = *is_secure ? ARMMMUIdx_Stage2_S
- : ARMMMUIdx_Stage2;
+ !regime_translation_disabled(env, s2_mmu_idx)) {
GetPhysAddrResult s2 = {};
int ret;
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 08/28] target/arm: Add is_secure parameter to regime_translation_disabled
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (6 preceding siblings ...)
2022-10-10 14:27 ` [PULL 07/28] target/arm: Fix S2 disabled check in S1_ptw_translate Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 09/28] target/arm: Split out get_phys_addr_with_secure Peter Maydell
` (20 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Remove the use of regime_is_secure from regime_translation_disabled,
using the new parameter instead.
This fixes a bug in S1_ptw_translate and get_phys_addr where we had
passed ARMMMUIdx_Stage2 and not ARMMMUIdx_Stage2_S to determine if
Stage2 is disabled, affecting FEAT_SEL2.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 631d1e25f15..d789807b086 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -131,12 +131,13 @@ static uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx, int ttbrn)
}
/* Return true if the specified stage of address translation is disabled */
-static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx)
+static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx,
+ bool is_secure)
{
uint64_t hcr_el2;
if (arm_feature(env, ARM_FEATURE_M)) {
- switch (env->v7m.mpu_ctrl[regime_is_secure(env, mmu_idx)] &
+ switch (env->v7m.mpu_ctrl[is_secure] &
(R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK)) {
case R_V7M_MPU_CTRL_ENABLE_MASK:
/* Enabled, but not for HardFault and NMI */
@@ -163,7 +164,7 @@ static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx)
if (hcr_el2 & HCR_TGE) {
/* TGE means that NS EL0/1 act as if SCTLR_EL1.M is zero */
- if (!regime_is_secure(env, mmu_idx) && regime_el(env, mmu_idx) == 1) {
+ if (!is_secure && regime_el(env, mmu_idx) == 1) {
return true;
}
}
@@ -203,7 +204,7 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
ARMMMUIdx s2_mmu_idx = *is_secure ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2;
if (arm_mmu_idx_is_stage1_of_2(mmu_idx) &&
- !regime_translation_disabled(env, s2_mmu_idx)) {
+ !regime_translation_disabled(env, s2_mmu_idx, *is_secure)) {
GetPhysAddrResult s2 = {};
int ret;
@@ -1357,7 +1358,7 @@ static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
uint32_t base;
bool is_user = regime_is_user(env, mmu_idx);
- if (regime_translation_disabled(env, mmu_idx)) {
+ if (regime_translation_disabled(env, mmu_idx, is_secure)) {
/* MPU disabled. */
result->phys = address;
result->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
@@ -1521,7 +1522,7 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
result->page_size = TARGET_PAGE_SIZE;
result->prot = 0;
- if (regime_translation_disabled(env, mmu_idx) ||
+ if (regime_translation_disabled(env, mmu_idx, secure) ||
m_is_ppb_region(env, address)) {
/*
* MPU disabled or M profile PPB access: use default memory map.
@@ -1733,7 +1734,7 @@ bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
* are done in arm_v7m_load_vector(), which always does a direct
* read using address_space_ldl(), rather than going via this function.
*/
- if (regime_translation_disabled(env, mmu_idx)) { /* MPU disabled */
+ if (regime_translation_disabled(env, mmu_idx, secure)) { /* MPU disabled */
hit = true;
} else if (m_is_ppb_region(env, address)) {
hit = true;
@@ -2307,7 +2308,8 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
result, fi);
/* If S1 fails or S2 is disabled, return early. */
- if (ret || regime_translation_disabled(env, ARMMMUIdx_Stage2)) {
+ if (ret || regime_translation_disabled(env, ARMMMUIdx_Stage2,
+ is_secure)) {
return ret;
}
@@ -2437,7 +2439,7 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
/* Definitely a real MMU, not an MPU */
- if (regime_translation_disabled(env, mmu_idx)) {
+ if (regime_translation_disabled(env, mmu_idx, is_secure)) {
uint64_t hcr;
uint8_t memattr;
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 09/28] target/arm: Split out get_phys_addr_with_secure
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (7 preceding siblings ...)
2022-10-10 14:27 ` [PULL 08/28] target/arm: Add is_secure parameter to regime_translation_disabled Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 10/28] target/arm: Add is_secure parameter to v7m_read_half_insn Peter Maydell
` (19 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Retain the existing get_phys_addr interface using the security
state derived from mmu_idx. Move the kerneldoc comments to the
header file where they belong.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/internals.h | 40 ++++++++++++++++++++++++++++++++++++++
target/arm/ptw.c | 44 ++++++++++++++----------------------------
2 files changed, 55 insertions(+), 29 deletions(-)
diff --git a/target/arm/internals.h b/target/arm/internals.h
index 307a5965053..3524d11dc57 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -1145,6 +1145,46 @@ typedef struct GetPhysAddrResult {
ARMCacheAttrs cacheattrs;
} GetPhysAddrResult;
+/**
+ * get_phys_addr_with_secure: get the physical address for a virtual address
+ * @env: CPUARMState
+ * @address: virtual address to get physical address for
+ * @access_type: 0 for read, 1 for write, 2 for execute
+ * @mmu_idx: MMU index indicating required translation regime
+ * @is_secure: security state for the access
+ * @result: set on translation success.
+ * @fi: set to fault info if the translation fails
+ *
+ * Find the physical address corresponding to the given virtual address,
+ * by doing a translation table walk on MMU based systems or using the
+ * MPU state on MPU based systems.
+ *
+ * Returns false if the translation was successful. Otherwise, phys_ptr, attrs,
+ * prot and page_size may not be filled in, and the populated fsr value provides
+ * information on why the translation aborted, in the format of a
+ * DFSR/IFSR fault register, with the following caveats:
+ * * we honour the short vs long DFSR format differences.
+ * * the WnR bit is never set (the caller must do this).
+ * * for PSMAv5 based systems we don't bother to return a full FSR format
+ * value.
+ */
+bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
+ MMUAccessType access_type,
+ ARMMMUIdx mmu_idx, bool is_secure,
+ GetPhysAddrResult *result, ARMMMUFaultInfo *fi)
+ __attribute__((nonnull));
+
+/**
+ * get_phys_addr: get the physical address for a virtual address
+ * @env: CPUARMState
+ * @address: virtual address to get physical address for
+ * @access_type: 0 for read, 1 for write, 2 for execute
+ * @mmu_idx: MMU index indicating required translation regime
+ * @result: set on translation success.
+ * @fi: set to fault info if the translation fails
+ *
+ * Similarly, but use the security regime of @mmu_idx.
+ */
bool get_phys_addr(CPUARMState *env, target_ulong address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
GetPhysAddrResult *result, ARMMMUFaultInfo *fi)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index d789807b086..74dcb843fe2 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -2260,35 +2260,12 @@ static ARMCacheAttrs combine_cacheattrs(CPUARMState *env,
return ret;
}
-/**
- * get_phys_addr - get the physical address for this virtual address
- *
- * Find the physical address corresponding to the given virtual address,
- * by doing a translation table walk on MMU based systems or using the
- * MPU state on MPU based systems.
- *
- * Returns false if the translation was successful. Otherwise, phys_ptr, attrs,
- * prot and page_size may not be filled in, and the populated fsr value provides
- * information on why the translation aborted, in the format of a
- * DFSR/IFSR fault register, with the following caveats:
- * * we honour the short vs long DFSR format differences.
- * * the WnR bit is never set (the caller must do this).
- * * for PSMAv5 based systems we don't bother to return a full FSR format
- * value.
- *
- * @env: CPUARMState
- * @address: virtual address to get physical address for
- * @access_type: 0 for read, 1 for write, 2 for execute
- * @mmu_idx: MMU index indicating required translation regime
- * @result: set on translation success.
- * @fi: set to fault info if the translation fails
- */
-bool get_phys_addr(CPUARMState *env, target_ulong address,
- MMUAccessType access_type, ARMMMUIdx mmu_idx,
- GetPhysAddrResult *result, ARMMMUFaultInfo *fi)
+bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
+ MMUAccessType access_type, ARMMMUIdx mmu_idx,
+ bool is_secure, GetPhysAddrResult *result,
+ ARMMMUFaultInfo *fi)
{
ARMMMUIdx s1_mmu_idx = stage_1_mmu_idx(mmu_idx);
- bool is_secure = regime_is_secure(env, mmu_idx);
if (mmu_idx != s1_mmu_idx) {
/*
@@ -2304,8 +2281,8 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
ARMMMUIdx s2_mmu_idx;
bool is_el0;
- ret = get_phys_addr(env, address, access_type, s1_mmu_idx,
- result, fi);
+ ret = get_phys_addr_with_secure(env, address, access_type,
+ s1_mmu_idx, is_secure, result, fi);
/* If S1 fails or S2 is disabled, return early. */
if (ret || regime_translation_disabled(env, ARMMMUIdx_Stage2,
@@ -2517,6 +2494,15 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
}
}
+bool get_phys_addr(CPUARMState *env, target_ulong address,
+ MMUAccessType access_type, ARMMMUIdx mmu_idx,
+ GetPhysAddrResult *result, ARMMMUFaultInfo *fi)
+{
+ return get_phys_addr_with_secure(env, address, access_type, mmu_idx,
+ regime_is_secure(env, mmu_idx),
+ result, fi);
+}
+
hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr,
MemTxAttrs *attrs)
{
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 10/28] target/arm: Add is_secure parameter to v7m_read_half_insn
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (8 preceding siblings ...)
2022-10-10 14:27 ` [PULL 09/28] target/arm: Split out get_phys_addr_with_secure Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 11/28] target/arm: Add TBFLAG_M32.SECURE Peter Maydell
` (18 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Remove the use of regime_is_secure from v7m_read_half_insn, using
the new parameter instead.
As it happens, both callers pass true, propagated from the argument
to arm_v7m_mmu_idx_for_secstate which created the mmu_idx argument,
but that is a detail of v7m_handle_execute_nsc we need not expose
to the callee.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/m_helper.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/target/arm/m_helper.c b/target/arm/m_helper.c
index 5ee4ee15b36..203ba411f64 100644
--- a/target/arm/m_helper.c
+++ b/target/arm/m_helper.c
@@ -1981,7 +1981,7 @@ static bool do_v7m_function_return(ARMCPU *cpu)
return true;
}
-static bool v7m_read_half_insn(ARMCPU *cpu, ARMMMUIdx mmu_idx,
+static bool v7m_read_half_insn(ARMCPU *cpu, ARMMMUIdx mmu_idx, bool secure,
uint32_t addr, uint16_t *insn)
{
/*
@@ -2003,8 +2003,7 @@ static bool v7m_read_half_insn(ARMCPU *cpu, ARMMMUIdx mmu_idx,
ARMMMUFaultInfo fi = {};
MemTxResult txres;
- v8m_security_lookup(env, addr, MMU_INST_FETCH, mmu_idx,
- regime_is_secure(env, mmu_idx), &sattrs);
+ v8m_security_lookup(env, addr, MMU_INST_FETCH, mmu_idx, secure, &sattrs);
if (!sattrs.nsc || sattrs.ns) {
/*
* This must be the second half of the insn, and it straddles a
@@ -2109,7 +2108,7 @@ static bool v7m_handle_execute_nsc(ARMCPU *cpu)
/* We want to do the MPU lookup as secure; work out what mmu_idx that is */
mmu_idx = arm_v7m_mmu_idx_for_secstate(env, true);
- if (!v7m_read_half_insn(cpu, mmu_idx, env->regs[15], &insn)) {
+ if (!v7m_read_half_insn(cpu, mmu_idx, true, env->regs[15], &insn)) {
return false;
}
@@ -2125,7 +2124,7 @@ static bool v7m_handle_execute_nsc(ARMCPU *cpu)
goto gen_invep;
}
- if (!v7m_read_half_insn(cpu, mmu_idx, env->regs[15] + 2, &insn)) {
+ if (!v7m_read_half_insn(cpu, mmu_idx, true, env->regs[15] + 2, &insn)) {
return false;
}
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 11/28] target/arm: Add TBFLAG_M32.SECURE
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (9 preceding siblings ...)
2022-10-10 14:27 ` [PULL 10/28] target/arm: Add is_secure parameter to v7m_read_half_insn Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 12/28] target/arm: Merge regime_is_secure into get_phys_addr Peter Maydell
` (17 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Remove the use of regime_is_secure from arm_tr_init_disas_context.
Instead, provide the value of v8m_secure directly from tb_flags.
Rather than use regime_is_secure, use the env->v7m.secure directly,
as per arm_mmu_idx_el.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-8-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/cpu.h | 2 ++
target/arm/helper.c | 4 ++++
target/arm/translate.c | 3 +--
3 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 68d99565ac4..a085c172974 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -3203,6 +3203,8 @@ FIELD(TBFLAG_M32, NEW_FP_CTXT_NEEDED, 3, 1) /* Not cached. */
FIELD(TBFLAG_M32, FPCCR_S_WRONG, 4, 1) /* Not cached. */
/* Set if MVE insns are definitely not predicated by VPR or LTPSIZE */
FIELD(TBFLAG_M32, MVE_NO_PRED, 5, 1) /* Not cached. */
+/* Set if in secure mode */
+FIELD(TBFLAG_M32, SECURE, 6, 1)
/*
* Bit usage when in AArch64 state
diff --git a/target/arm/helper.c b/target/arm/helper.c
index c08a7b35a04..8d82c147623 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -10948,6 +10948,10 @@ static CPUARMTBFlags rebuild_hflags_m32(CPUARMState *env, int fp_el,
DP_TBFLAG_M32(flags, STACKCHECK, 1);
}
+ if (arm_feature(env, ARM_FEATURE_M_SECURITY) && env->v7m.secure) {
+ DP_TBFLAG_M32(flags, SECURE, 1);
+ }
+
return rebuild_hflags_common_32(env, fp_el, mmu_idx, flags);
}
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 5aaccbbf71d..ac647e02628 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -9351,8 +9351,7 @@ static void arm_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
dc->vfp_enabled = 1;
dc->be_data = MO_TE;
dc->v7m_handler_mode = EX_TBFLAG_M32(tb_flags, HANDLER);
- dc->v8m_secure = arm_feature(env, ARM_FEATURE_M_SECURITY) &&
- regime_is_secure(env, dc->mmu_idx);
+ dc->v8m_secure = EX_TBFLAG_M32(tb_flags, SECURE);
dc->v8m_stackcheck = EX_TBFLAG_M32(tb_flags, STACKCHECK);
dc->v8m_fpccr_s_wrong = EX_TBFLAG_M32(tb_flags, FPCCR_S_WRONG);
dc->v7m_new_fp_ctxt_needed =
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 12/28] target/arm: Merge regime_is_secure into get_phys_addr
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (10 preceding siblings ...)
2022-10-10 14:27 ` [PULL 11/28] target/arm: Add TBFLAG_M32.SECURE Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 13/28] target/arm: Add is_secure parameter to do_ats_write Peter Maydell
` (16 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
This is the last use of regime_is_secure; remove it
entirely before changing the layout of ARMMMUIdx.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/internals.h | 42 ----------------------------------------
target/arm/ptw.c | 44 ++++++++++++++++++++++++++++++++++++++++--
2 files changed, 42 insertions(+), 44 deletions(-)
diff --git a/target/arm/internals.h b/target/arm/internals.h
index 3524d11dc57..14428730d44 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -670,48 +670,6 @@ static inline bool regime_has_2_ranges(ARMMMUIdx mmu_idx)
}
}
-/* Return true if this address translation regime is secure */
-static inline bool regime_is_secure(CPUARMState *env, ARMMMUIdx mmu_idx)
-{
- switch (mmu_idx) {
- case ARMMMUIdx_E10_0:
- case ARMMMUIdx_E10_1:
- case ARMMMUIdx_E10_1_PAN:
- case ARMMMUIdx_E20_0:
- case ARMMMUIdx_E20_2:
- case ARMMMUIdx_E20_2_PAN:
- case ARMMMUIdx_Stage1_E0:
- case ARMMMUIdx_Stage1_E1:
- case ARMMMUIdx_Stage1_E1_PAN:
- case ARMMMUIdx_E2:
- case ARMMMUIdx_Stage2:
- case ARMMMUIdx_MPrivNegPri:
- case ARMMMUIdx_MUserNegPri:
- case ARMMMUIdx_MPriv:
- case ARMMMUIdx_MUser:
- return false;
- case ARMMMUIdx_SE3:
- case ARMMMUIdx_SE10_0:
- case ARMMMUIdx_SE10_1:
- case ARMMMUIdx_SE10_1_PAN:
- case ARMMMUIdx_SE20_0:
- case ARMMMUIdx_SE20_2:
- case ARMMMUIdx_SE20_2_PAN:
- case ARMMMUIdx_Stage1_SE0:
- case ARMMMUIdx_Stage1_SE1:
- case ARMMMUIdx_Stage1_SE1_PAN:
- case ARMMMUIdx_SE2:
- case ARMMMUIdx_Stage2_S:
- case ARMMMUIdx_MSPrivNegPri:
- case ARMMMUIdx_MSUserNegPri:
- case ARMMMUIdx_MSPriv:
- case ARMMMUIdx_MSUser:
- return true;
- default:
- g_assert_not_reached();
- }
-}
-
static inline bool regime_is_pan(CPUARMState *env, ARMMMUIdx mmu_idx)
{
switch (mmu_idx) {
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 74dcb843fe2..55e8f33c508 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -2498,9 +2498,49 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
GetPhysAddrResult *result, ARMMMUFaultInfo *fi)
{
+ bool is_secure;
+
+ switch (mmu_idx) {
+ case ARMMMUIdx_E10_0:
+ case ARMMMUIdx_E10_1:
+ case ARMMMUIdx_E10_1_PAN:
+ case ARMMMUIdx_E20_0:
+ case ARMMMUIdx_E20_2:
+ case ARMMMUIdx_E20_2_PAN:
+ case ARMMMUIdx_Stage1_E0:
+ case ARMMMUIdx_Stage1_E1:
+ case ARMMMUIdx_Stage1_E1_PAN:
+ case ARMMMUIdx_E2:
+ case ARMMMUIdx_Stage2:
+ case ARMMMUIdx_MPrivNegPri:
+ case ARMMMUIdx_MUserNegPri:
+ case ARMMMUIdx_MPriv:
+ case ARMMMUIdx_MUser:
+ is_secure = false;
+ break;
+ case ARMMMUIdx_SE3:
+ case ARMMMUIdx_SE10_0:
+ case ARMMMUIdx_SE10_1:
+ case ARMMMUIdx_SE10_1_PAN:
+ case ARMMMUIdx_SE20_0:
+ case ARMMMUIdx_SE20_2:
+ case ARMMMUIdx_SE20_2_PAN:
+ case ARMMMUIdx_Stage1_SE0:
+ case ARMMMUIdx_Stage1_SE1:
+ case ARMMMUIdx_Stage1_SE1_PAN:
+ case ARMMMUIdx_SE2:
+ case ARMMMUIdx_Stage2_S:
+ case ARMMMUIdx_MSPrivNegPri:
+ case ARMMMUIdx_MSUserNegPri:
+ case ARMMMUIdx_MSPriv:
+ case ARMMMUIdx_MSUser:
+ is_secure = true;
+ break;
+ default:
+ g_assert_not_reached();
+ }
return get_phys_addr_with_secure(env, address, access_type, mmu_idx,
- regime_is_secure(env, mmu_idx),
- result, fi);
+ is_secure, result, fi);
}
hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr,
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 13/28] target/arm: Add is_secure parameter to do_ats_write
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (11 preceding siblings ...)
2022-10-10 14:27 ` [PULL 12/28] target/arm: Merge regime_is_secure into get_phys_addr Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 14/28] target/arm: Fold secure and non-secure a-profile mmu indexes Peter Maydell
` (15 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Use get_phys_addr_with_secure directly. For a-profile, this is the
one place where the value of is_secure may not equal arm_is_secure(env).
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-10-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/helper.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 8d82c147623..fd4663a9467 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -3191,7 +3191,8 @@ static CPAccessResult ats_access(CPUARMState *env, const ARMCPRegInfo *ri,
#ifdef CONFIG_TCG
static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
- MMUAccessType access_type, ARMMMUIdx mmu_idx)
+ MMUAccessType access_type, ARMMMUIdx mmu_idx,
+ bool is_secure)
{
bool ret;
uint64_t par64;
@@ -3199,7 +3200,8 @@ static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
ARMMMUFaultInfo fi = {};
GetPhysAddrResult res = {};
- ret = get_phys_addr(env, value, access_type, mmu_idx, &res, &fi);
+ ret = get_phys_addr_with_secure(env, value, access_type, mmu_idx,
+ is_secure, &res, &fi);
/*
* ATS operations only do S1 or S1+S2 translations, so we never
@@ -3371,6 +3373,7 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
switch (el) {
case 3:
mmu_idx = ARMMMUIdx_SE3;
+ secure = true;
break;
case 2:
g_assert(!secure); /* ARMv8.4-SecEL2 is 64-bit only */
@@ -3392,6 +3395,7 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
switch (el) {
case 3:
mmu_idx = ARMMMUIdx_SE10_0;
+ secure = true;
break;
case 2:
g_assert(!secure); /* ARMv8.4-SecEL2 is 64-bit only */
@@ -3407,16 +3411,18 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
case 4:
/* stage 1+2 NonSecure PL1: ATS12NSOPR, ATS12NSOPW */
mmu_idx = ARMMMUIdx_E10_1;
+ secure = false;
break;
case 6:
/* stage 1+2 NonSecure PL0: ATS12NSOUR, ATS12NSOUW */
mmu_idx = ARMMMUIdx_E10_0;
+ secure = false;
break;
default:
g_assert_not_reached();
}
- par64 = do_ats_write(env, value, access_type, mmu_idx);
+ par64 = do_ats_write(env, value, access_type, mmu_idx, secure);
A32_BANKED_CURRENT_REG_SET(env, par, par64);
#else
@@ -3432,7 +3438,8 @@ static void ats1h_write(CPUARMState *env, const ARMCPRegInfo *ri,
MMUAccessType access_type = ri->opc2 & 1 ? MMU_DATA_STORE : MMU_DATA_LOAD;
uint64_t par64;
- par64 = do_ats_write(env, value, access_type, ARMMMUIdx_E2);
+ /* There is no SecureEL2 for AArch32. */
+ par64 = do_ats_write(env, value, access_type, ARMMMUIdx_E2, false);
A32_BANKED_CURRENT_REG_SET(env, par, par64);
#else
@@ -3475,6 +3482,7 @@ static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri,
break;
case 6: /* AT S1E3R, AT S1E3W */
mmu_idx = ARMMMUIdx_SE3;
+ secure = true;
break;
default:
g_assert_not_reached();
@@ -3493,7 +3501,8 @@ static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri,
g_assert_not_reached();
}
- env->cp15.par_el[1] = do_ats_write(env, value, access_type, mmu_idx);
+ env->cp15.par_el[1] = do_ats_write(env, value, access_type,
+ mmu_idx, secure);
#else
/* Handled by hardware accelerator. */
g_assert_not_reached();
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 14/28] target/arm: Fold secure and non-secure a-profile mmu indexes
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (12 preceding siblings ...)
2022-10-10 14:27 ` [PULL 13/28] target/arm: Add is_secure parameter to do_ats_write Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 15/28] target/arm: Reorg regime_translation_disabled Peter Maydell
` (14 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
For a-profile aarch64, which does not bank system registers, it takes
quite a lot of code to switch between security states. In the process,
registers such as TCR_EL{1,2} must be swapped, which in itself requires
the flushing of softmmu tlbs. Therefore it doesn't buy us anything to
separate tlbs by security state.
Retain the distinction between Stage2 and Stage2_S.
This will be important as we implement FEAT_RME, and do not wish to
add a third set of mmu indexes for Realm state.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/cpu-param.h | 2 +-
target/arm/cpu.h | 72 +++++++------------
target/arm/internals.h | 31 +-------
target/arm/helper.c | 144 +++++++++++++------------------------
target/arm/ptw.c | 25 ++-----
target/arm/translate-a64.c | 8 ---
target/arm/translate.c | 6 +-
7 files changed, 85 insertions(+), 203 deletions(-)
diff --git a/target/arm/cpu-param.h b/target/arm/cpu-param.h
index 68ffb124278..08681828ac4 100644
--- a/target/arm/cpu-param.h
+++ b/target/arm/cpu-param.h
@@ -32,6 +32,6 @@
# define TARGET_PAGE_BITS_MIN 10
#endif
-#define NB_MMU_MODES 15
+#define NB_MMU_MODES 8
#endif
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index a085c172974..53f4c236e1f 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -2884,26 +2884,27 @@ bool write_cpustate_to_list(ARMCPU *cpu, bool kvm_sync);
* table over and over.
* 6. we need separate EL1/EL2 mmu_idx for handling the Privileged Access
* Never (PAN) bit within PSTATE.
+ * 7. we fold together the secure and non-secure regimes for A-profile,
+ * because there are no banked system registers for aarch64, so the
+ * process of switching between secure and non-secure is
+ * already heavyweight.
*
* This gives us the following list of cases:
*
- * NS EL0 EL1&0 stage 1+2 (aka NS PL0)
- * NS EL1 EL1&0 stage 1+2 (aka NS PL1)
- * NS EL1 EL1&0 stage 1+2 +PAN
- * NS EL0 EL2&0
- * NS EL2 EL2&0
- * NS EL2 EL2&0 +PAN
- * NS EL2 (aka NS PL2)
- * S EL0 EL1&0 (aka S PL0)
- * S EL1 EL1&0 (not used if EL3 is 32 bit)
- * S EL1 EL1&0 +PAN
- * S EL3 (aka S PL1)
+ * EL0 EL1&0 stage 1+2 (aka NS PL0)
+ * EL1 EL1&0 stage 1+2 (aka NS PL1)
+ * EL1 EL1&0 stage 1+2 +PAN
+ * EL0 EL2&0
+ * EL2 EL2&0
+ * EL2 EL2&0 +PAN
+ * EL2 (aka NS PL2)
+ * EL3 (aka S PL1)
*
- * for a total of 11 different mmu_idx.
+ * for a total of 8 different mmu_idx.
*
* R profile CPUs have an MPU, but can use the same set of MMU indexes
- * as A profile. They only need to distinguish NS EL0 and NS EL1 (and
- * NS EL2 if we ever model a Cortex-R52).
+ * as A profile. They only need to distinguish EL0 and EL1 (and
+ * EL2 if we ever model a Cortex-R52).
*
* M profile CPUs are rather different as they do not have a true MMU.
* They have the following different MMU indexes:
@@ -2942,9 +2943,6 @@ bool write_cpustate_to_list(ARMCPU *cpu, bool kvm_sync);
#define ARM_MMU_IDX_NOTLB 0x20 /* does not have a TLB */
#define ARM_MMU_IDX_M 0x40 /* M profile */
-/* Meanings of the bits for A profile mmu idx values */
-#define ARM_MMU_IDX_A_NS 0x8
-
/* Meanings of the bits for M profile mmu idx values */
#define ARM_MMU_IDX_M_PRIV 0x1
#define ARM_MMU_IDX_M_NEGPRI 0x2
@@ -2958,22 +2956,14 @@ typedef enum ARMMMUIdx {
/*
* A-profile.
*/
- ARMMMUIdx_SE10_0 = 0 | ARM_MMU_IDX_A,
- ARMMMUIdx_SE20_0 = 1 | ARM_MMU_IDX_A,
- ARMMMUIdx_SE10_1 = 2 | ARM_MMU_IDX_A,
- ARMMMUIdx_SE20_2 = 3 | ARM_MMU_IDX_A,
- ARMMMUIdx_SE10_1_PAN = 4 | ARM_MMU_IDX_A,
- ARMMMUIdx_SE20_2_PAN = 5 | ARM_MMU_IDX_A,
- ARMMMUIdx_SE2 = 6 | ARM_MMU_IDX_A,
- ARMMMUIdx_SE3 = 7 | ARM_MMU_IDX_A,
-
- ARMMMUIdx_E10_0 = ARMMMUIdx_SE10_0 | ARM_MMU_IDX_A_NS,
- ARMMMUIdx_E20_0 = ARMMMUIdx_SE20_0 | ARM_MMU_IDX_A_NS,
- ARMMMUIdx_E10_1 = ARMMMUIdx_SE10_1 | ARM_MMU_IDX_A_NS,
- ARMMMUIdx_E20_2 = ARMMMUIdx_SE20_2 | ARM_MMU_IDX_A_NS,
- ARMMMUIdx_E10_1_PAN = ARMMMUIdx_SE10_1_PAN | ARM_MMU_IDX_A_NS,
- ARMMMUIdx_E20_2_PAN = ARMMMUIdx_SE20_2_PAN | ARM_MMU_IDX_A_NS,
- ARMMMUIdx_E2 = ARMMMUIdx_SE2 | ARM_MMU_IDX_A_NS,
+ ARMMMUIdx_E10_0 = 0 | ARM_MMU_IDX_A,
+ ARMMMUIdx_E20_0 = 1 | ARM_MMU_IDX_A,
+ ARMMMUIdx_E10_1 = 2 | ARM_MMU_IDX_A,
+ ARMMMUIdx_E20_2 = 3 | ARM_MMU_IDX_A,
+ ARMMMUIdx_E10_1_PAN = 4 | ARM_MMU_IDX_A,
+ ARMMMUIdx_E20_2_PAN = 5 | ARM_MMU_IDX_A,
+ ARMMMUIdx_E2 = 6 | ARM_MMU_IDX_A,
+ ARMMMUIdx_E3 = 7 | ARM_MMU_IDX_A,
/*
* These are not allocated TLBs and are used only for AT system
@@ -2982,9 +2972,6 @@ typedef enum ARMMMUIdx {
ARMMMUIdx_Stage1_E0 = 0 | ARM_MMU_IDX_NOTLB,
ARMMMUIdx_Stage1_E1 = 1 | ARM_MMU_IDX_NOTLB,
ARMMMUIdx_Stage1_E1_PAN = 2 | ARM_MMU_IDX_NOTLB,
- ARMMMUIdx_Stage1_SE0 = 3 | ARM_MMU_IDX_NOTLB,
- ARMMMUIdx_Stage1_SE1 = 4 | ARM_MMU_IDX_NOTLB,
- ARMMMUIdx_Stage1_SE1_PAN = 5 | ARM_MMU_IDX_NOTLB,
/*
* Not allocated a TLB: used only for second stage of an S12 page
* table walk, or for descriptor loads during first stage of an S1
@@ -2992,8 +2979,8 @@ typedef enum ARMMMUIdx {
* then various TLB flush insns which currently are no-ops or flush
* only stage 1 MMU indexes will need to change to flush stage 2.
*/
- ARMMMUIdx_Stage2 = 6 | ARM_MMU_IDX_NOTLB,
- ARMMMUIdx_Stage2_S = 7 | ARM_MMU_IDX_NOTLB,
+ ARMMMUIdx_Stage2 = 3 | ARM_MMU_IDX_NOTLB,
+ ARMMMUIdx_Stage2_S = 4 | ARM_MMU_IDX_NOTLB,
/*
* M-profile.
@@ -3023,14 +3010,7 @@ typedef enum ARMMMUIdxBit {
TO_CORE_BIT(E2),
TO_CORE_BIT(E20_2),
TO_CORE_BIT(E20_2_PAN),
- TO_CORE_BIT(SE10_0),
- TO_CORE_BIT(SE20_0),
- TO_CORE_BIT(SE10_1),
- TO_CORE_BIT(SE20_2),
- TO_CORE_BIT(SE10_1_PAN),
- TO_CORE_BIT(SE20_2_PAN),
- TO_CORE_BIT(SE2),
- TO_CORE_BIT(SE3),
+ TO_CORE_BIT(E3),
TO_CORE_BIT(MUser),
TO_CORE_BIT(MPriv),
diff --git a/target/arm/internals.h b/target/arm/internals.h
index 14428730d44..b509d708514 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -649,21 +649,12 @@ static inline bool regime_has_2_ranges(ARMMMUIdx mmu_idx)
case ARMMMUIdx_Stage1_E0:
case ARMMMUIdx_Stage1_E1:
case ARMMMUIdx_Stage1_E1_PAN:
- case ARMMMUIdx_Stage1_SE0:
- case ARMMMUIdx_Stage1_SE1:
- case ARMMMUIdx_Stage1_SE1_PAN:
case ARMMMUIdx_E10_0:
case ARMMMUIdx_E10_1:
case ARMMMUIdx_E10_1_PAN:
case ARMMMUIdx_E20_0:
case ARMMMUIdx_E20_2:
case ARMMMUIdx_E20_2_PAN:
- case ARMMMUIdx_SE10_0:
- case ARMMMUIdx_SE10_1:
- case ARMMMUIdx_SE10_1_PAN:
- case ARMMMUIdx_SE20_0:
- case ARMMMUIdx_SE20_2:
- case ARMMMUIdx_SE20_2_PAN:
return true;
default:
return false;
@@ -674,11 +665,8 @@ static inline bool regime_is_pan(CPUARMState *env, ARMMMUIdx mmu_idx)
{
switch (mmu_idx) {
case ARMMMUIdx_Stage1_E1_PAN:
- case ARMMMUIdx_Stage1_SE1_PAN:
case ARMMMUIdx_E10_1_PAN:
case ARMMMUIdx_E20_2_PAN:
- case ARMMMUIdx_SE10_1_PAN:
- case ARMMMUIdx_SE20_2_PAN:
return true;
default:
return false;
@@ -689,30 +677,20 @@ static inline bool regime_is_pan(CPUARMState *env, ARMMMUIdx mmu_idx)
static inline uint32_t regime_el(CPUARMState *env, ARMMMUIdx mmu_idx)
{
switch (mmu_idx) {
- case ARMMMUIdx_SE20_0:
- case ARMMMUIdx_SE20_2:
- case ARMMMUIdx_SE20_2_PAN:
case ARMMMUIdx_E20_0:
case ARMMMUIdx_E20_2:
case ARMMMUIdx_E20_2_PAN:
case ARMMMUIdx_Stage2:
case ARMMMUIdx_Stage2_S:
- case ARMMMUIdx_SE2:
case ARMMMUIdx_E2:
return 2;
- case ARMMMUIdx_SE3:
+ case ARMMMUIdx_E3:
return 3;
- case ARMMMUIdx_SE10_0:
- case ARMMMUIdx_Stage1_SE0:
- return arm_el_is_aa64(env, 3) ? 1 : 3;
- case ARMMMUIdx_SE10_1:
- case ARMMMUIdx_SE10_1_PAN:
+ case ARMMMUIdx_E10_0:
case ARMMMUIdx_Stage1_E0:
+ return arm_el_is_aa64(env, 3) || !arm_is_secure_below_el3(env) ? 1 : 3;
case ARMMMUIdx_Stage1_E1:
case ARMMMUIdx_Stage1_E1_PAN:
- case ARMMMUIdx_Stage1_SE1:
- case ARMMMUIdx_Stage1_SE1_PAN:
- case ARMMMUIdx_E10_0:
case ARMMMUIdx_E10_1:
case ARMMMUIdx_E10_1_PAN:
case ARMMMUIdx_MPrivNegPri:
@@ -954,9 +932,6 @@ static inline bool arm_mmu_idx_is_stage1_of_2(ARMMMUIdx mmu_idx)
case ARMMMUIdx_Stage1_E0:
case ARMMMUIdx_Stage1_E1:
case ARMMMUIdx_Stage1_E1_PAN:
- case ARMMMUIdx_Stage1_SE0:
- case ARMMMUIdx_Stage1_SE1:
- case ARMMMUIdx_Stage1_SE1_PAN:
return true;
default:
return false;
diff --git a/target/arm/helper.c b/target/arm/helper.c
index fd4663a9467..b1b8725628b 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -1754,6 +1754,7 @@ static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
/* Begin with base v8.0 state. */
uint64_t valid_mask = 0x3fff;
ARMCPU *cpu = env_archcpu(env);
+ uint64_t changed;
/*
* Because SCR_EL3 is the "real" cpreg and SCR is the alias, reset always
@@ -1816,7 +1817,22 @@ static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
/* Clear all-context RES0 bits. */
value &= valid_mask;
- raw_write(env, ri, value);
+ changed = env->cp15.scr_el3 ^ value;
+ env->cp15.scr_el3 = value;
+
+ /*
+ * If SCR_EL3.NS changes, i.e. arm_is_secure_below_el3, then
+ * we must invalidate all TLBs below EL3.
+ */
+ if (changed & SCR_NS) {
+ tlb_flush_by_mmuidx(env_cpu(env), (ARMMMUIdxBit_E10_0 |
+ ARMMMUIdxBit_E20_0 |
+ ARMMMUIdxBit_E10_1 |
+ ARMMMUIdxBit_E20_2 |
+ ARMMMUIdxBit_E10_1_PAN |
+ ARMMMUIdxBit_E20_2_PAN |
+ ARMMMUIdxBit_E2));
+ }
}
static void scr_reset(CPUARMState *env, const ARMCPRegInfo *ri)
@@ -2647,9 +2663,6 @@ static int gt_phys_redir_timeridx(CPUARMState *env)
case ARMMMUIdx_E20_0:
case ARMMMUIdx_E20_2:
case ARMMMUIdx_E20_2_PAN:
- case ARMMMUIdx_SE20_0:
- case ARMMMUIdx_SE20_2:
- case ARMMMUIdx_SE20_2_PAN:
return GTIMER_HYP;
default:
return GTIMER_PHYS;
@@ -2662,9 +2675,6 @@ static int gt_virt_redir_timeridx(CPUARMState *env)
case ARMMMUIdx_E20_0:
case ARMMMUIdx_E20_2:
case ARMMMUIdx_E20_2_PAN:
- case ARMMMUIdx_SE20_0:
- case ARMMMUIdx_SE20_2:
- case ARMMMUIdx_SE20_2_PAN:
return GTIMER_HYPVIRT;
default:
return GTIMER_VIRT;
@@ -3372,7 +3382,7 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
/* stage 1 current state PL1: ATS1CPR, ATS1CPW, ATS1CPRP, ATS1CPWP */
switch (el) {
case 3:
- mmu_idx = ARMMMUIdx_SE3;
+ mmu_idx = ARMMMUIdx_E3;
secure = true;
break;
case 2:
@@ -3380,10 +3390,9 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
/* fall through */
case 1:
if (ri->crm == 9 && (env->uncached_cpsr & CPSR_PAN)) {
- mmu_idx = (secure ? ARMMMUIdx_Stage1_SE1_PAN
- : ARMMMUIdx_Stage1_E1_PAN);
+ mmu_idx = ARMMMUIdx_Stage1_E1_PAN;
} else {
- mmu_idx = secure ? ARMMMUIdx_Stage1_SE1 : ARMMMUIdx_Stage1_E1;
+ mmu_idx = ARMMMUIdx_Stage1_E1;
}
break;
default:
@@ -3394,7 +3403,7 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
/* stage 1 current state PL0: ATS1CUR, ATS1CUW */
switch (el) {
case 3:
- mmu_idx = ARMMMUIdx_SE10_0;
+ mmu_idx = ARMMMUIdx_E10_0;
secure = true;
break;
case 2:
@@ -3402,7 +3411,7 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
mmu_idx = ARMMMUIdx_Stage1_E0;
break;
case 1:
- mmu_idx = secure ? ARMMMUIdx_Stage1_SE0 : ARMMMUIdx_Stage1_E0;
+ mmu_idx = ARMMMUIdx_Stage1_E0;
break;
default:
g_assert_not_reached();
@@ -3471,17 +3480,16 @@ static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri,
switch (ri->opc1) {
case 0: /* AT S1E1R, AT S1E1W, AT S1E1RP, AT S1E1WP */
if (ri->crm == 9 && (env->pstate & PSTATE_PAN)) {
- mmu_idx = (secure ? ARMMMUIdx_Stage1_SE1_PAN
- : ARMMMUIdx_Stage1_E1_PAN);
+ mmu_idx = ARMMMUIdx_Stage1_E1_PAN;
} else {
- mmu_idx = secure ? ARMMMUIdx_Stage1_SE1 : ARMMMUIdx_Stage1_E1;
+ mmu_idx = ARMMMUIdx_Stage1_E1;
}
break;
case 4: /* AT S1E2R, AT S1E2W */
- mmu_idx = secure ? ARMMMUIdx_SE2 : ARMMMUIdx_E2;
+ mmu_idx = ARMMMUIdx_E2;
break;
case 6: /* AT S1E3R, AT S1E3W */
- mmu_idx = ARMMMUIdx_SE3;
+ mmu_idx = ARMMMUIdx_E3;
secure = true;
break;
default:
@@ -3489,13 +3497,13 @@ static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri,
}
break;
case 2: /* AT S1E0R, AT S1E0W */
- mmu_idx = secure ? ARMMMUIdx_Stage1_SE0 : ARMMMUIdx_Stage1_E0;
+ mmu_idx = ARMMMUIdx_Stage1_E0;
break;
case 4: /* AT S12E1R, AT S12E1W */
- mmu_idx = secure ? ARMMMUIdx_SE10_1 : ARMMMUIdx_E10_1;
+ mmu_idx = ARMMMUIdx_E10_1;
break;
case 6: /* AT S12E0R, AT S12E0W */
- mmu_idx = secure ? ARMMMUIdx_SE10_0 : ARMMMUIdx_E10_0;
+ mmu_idx = ARMMMUIdx_E10_0;
break;
default:
g_assert_not_reached();
@@ -3765,11 +3773,6 @@ static void vmsa_tcr_ttbr_el2_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint16_t mask = ARMMMUIdxBit_E20_2 |
ARMMMUIdxBit_E20_2_PAN |
ARMMMUIdxBit_E20_0;
-
- if (arm_is_secure_below_el3(env)) {
- mask >>= ARM_MMU_IDX_A_NS;
- }
-
tlb_flush_by_mmuidx(env_cpu(env), mask);
}
raw_write(env, ri, value);
@@ -3789,11 +3792,6 @@ static void vttbr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint16_t mask = ARMMMUIdxBit_E10_1 |
ARMMMUIdxBit_E10_1_PAN |
ARMMMUIdxBit_E10_0;
-
- if (arm_is_secure_below_el3(env)) {
- mask >>= ARM_MMU_IDX_A_NS;
- }
-
tlb_flush_by_mmuidx(cs, mask);
raw_write(env, ri, value);
}
@@ -4264,11 +4262,6 @@ static int vae1_tlbmask(CPUARMState *env)
ARMMMUIdxBit_E10_1_PAN |
ARMMMUIdxBit_E10_0;
}
-
- if (arm_is_secure_below_el3(env)) {
- mask >>= ARM_MMU_IDX_A_NS;
- }
-
return mask;
}
@@ -4295,10 +4288,6 @@ static int vae1_tlbbits(CPUARMState *env, uint64_t addr)
mmu_idx = ARMMMUIdx_E10_0;
}
- if (arm_is_secure_below_el3(env)) {
- mmu_idx &= ~ARM_MMU_IDX_A_NS;
- }
-
return tlbbits_for_regime(env, mmu_idx, addr);
}
@@ -4331,30 +4320,17 @@ static int alle1_tlbmask(CPUARMState *env)
* stage 2 translations, whereas most other scopes only invalidate
* stage 1 translations.
*/
- if (arm_is_secure_below_el3(env)) {
- return ARMMMUIdxBit_SE10_1 |
- ARMMMUIdxBit_SE10_1_PAN |
- ARMMMUIdxBit_SE10_0;
- } else {
- return ARMMMUIdxBit_E10_1 |
- ARMMMUIdxBit_E10_1_PAN |
- ARMMMUIdxBit_E10_0;
- }
+ return (ARMMMUIdxBit_E10_1 |
+ ARMMMUIdxBit_E10_1_PAN |
+ ARMMMUIdxBit_E10_0);
}
static int e2_tlbmask(CPUARMState *env)
{
- if (arm_is_secure_below_el3(env)) {
- return ARMMMUIdxBit_SE20_0 |
- ARMMMUIdxBit_SE20_2 |
- ARMMMUIdxBit_SE20_2_PAN |
- ARMMMUIdxBit_SE2;
- } else {
- return ARMMMUIdxBit_E20_0 |
- ARMMMUIdxBit_E20_2 |
- ARMMMUIdxBit_E20_2_PAN |
- ARMMMUIdxBit_E2;
- }
+ return (ARMMMUIdxBit_E20_0 |
+ ARMMMUIdxBit_E20_2 |
+ ARMMMUIdxBit_E20_2_PAN |
+ ARMMMUIdxBit_E2);
}
static void tlbi_aa64_alle1_write(CPUARMState *env, const ARMCPRegInfo *ri,
@@ -4381,7 +4357,7 @@ static void tlbi_aa64_alle3_write(CPUARMState *env, const ARMCPRegInfo *ri,
ARMCPU *cpu = env_archcpu(env);
CPUState *cs = CPU(cpu);
- tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_SE3);
+ tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_E3);
}
static void tlbi_aa64_alle1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
@@ -4407,7 +4383,7 @@ static void tlbi_aa64_alle3is_write(CPUARMState *env, const ARMCPRegInfo *ri,
{
CPUState *cs = env_cpu(env);
- tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_SE3);
+ tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_E3);
}
static void tlbi_aa64_vae2_write(CPUARMState *env, const ARMCPRegInfo *ri,
@@ -4435,7 +4411,7 @@ static void tlbi_aa64_vae3_write(CPUARMState *env, const ARMCPRegInfo *ri,
CPUState *cs = CPU(cpu);
uint64_t pageaddr = sextract64(value << 12, 0, 56);
- tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_SE3);
+ tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_E3);
}
static void tlbi_aa64_vae1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
@@ -4474,12 +4450,10 @@ static void tlbi_aa64_vae2is_write(CPUARMState *env, const ARMCPRegInfo *ri,
{
CPUState *cs = env_cpu(env);
uint64_t pageaddr = sextract64(value << 12, 0, 56);
- bool secure = arm_is_secure_below_el3(env);
- int mask = secure ? ARMMMUIdxBit_SE2 : ARMMMUIdxBit_E2;
- int bits = tlbbits_for_regime(env, secure ? ARMMMUIdx_SE2 : ARMMMUIdx_E2,
- pageaddr);
+ int bits = tlbbits_for_regime(env, ARMMMUIdx_E2, pageaddr);
- tlb_flush_page_bits_by_mmuidx_all_cpus_synced(cs, pageaddr, mask, bits);
+ tlb_flush_page_bits_by_mmuidx_all_cpus_synced(cs, pageaddr,
+ ARMMMUIdxBit_E2, bits);
}
static void tlbi_aa64_vae3is_write(CPUARMState *env, const ARMCPRegInfo *ri,
@@ -4487,10 +4461,10 @@ static void tlbi_aa64_vae3is_write(CPUARMState *env, const ARMCPRegInfo *ri,
{
CPUState *cs = env_cpu(env);
uint64_t pageaddr = sextract64(value << 12, 0, 56);
- int bits = tlbbits_for_regime(env, ARMMMUIdx_SE3, pageaddr);
+ int bits = tlbbits_for_regime(env, ARMMMUIdx_E3, pageaddr);
tlb_flush_page_bits_by_mmuidx_all_cpus_synced(cs, pageaddr,
- ARMMMUIdxBit_SE3, bits);
+ ARMMMUIdxBit_E3, bits);
}
#ifdef TARGET_AARCH64
@@ -4596,8 +4570,7 @@ static void tlbi_aa64_rvae1is_write(CPUARMState *env,
static int vae2_tlbmask(CPUARMState *env)
{
- return (arm_is_secure_below_el3(env)
- ? ARMMMUIdxBit_SE2 : ARMMMUIdxBit_E2);
+ return ARMMMUIdxBit_E2;
}
static void tlbi_aa64_rvae2_write(CPUARMState *env,
@@ -4643,8 +4616,7 @@ static void tlbi_aa64_rvae3_write(CPUARMState *env,
* flush-last-level-only.
*/
- do_rvae_write(env, value, ARMMMUIdxBit_SE3,
- tlb_force_broadcast(env));
+ do_rvae_write(env, value, ARMMMUIdxBit_E3, tlb_force_broadcast(env));
}
static void tlbi_aa64_rvae3is_write(CPUARMState *env,
@@ -4658,7 +4630,7 @@ static void tlbi_aa64_rvae3is_write(CPUARMState *env,
* flush-last-level-only or inner/outer specific flushes.
*/
- do_rvae_write(env, value, ARMMMUIdxBit_SE3, true);
+ do_rvae_write(env, value, ARMMMUIdxBit_E3, true);
}
#endif
@@ -10271,8 +10243,7 @@ uint64_t arm_sctlr(CPUARMState *env, int el)
/* Only EL0 needs to be adjusted for EL1&0 or EL2&0. */
if (el == 0) {
ARMMMUIdx mmu_idx = arm_mmu_idx_el(env, 0);
- el = (mmu_idx == ARMMMUIdx_E20_0 || mmu_idx == ARMMMUIdx_SE20_0)
- ? 2 : 1;
+ el = mmu_idx == ARMMMUIdx_E20_0 ? 2 : 1;
}
return env->cp15.sctlr_el[el];
}
@@ -10816,22 +10787,15 @@ int arm_mmu_idx_to_el(ARMMMUIdx mmu_idx)
switch (mmu_idx) {
case ARMMMUIdx_E10_0:
case ARMMMUIdx_E20_0:
- case ARMMMUIdx_SE10_0:
- case ARMMMUIdx_SE20_0:
return 0;
case ARMMMUIdx_E10_1:
case ARMMMUIdx_E10_1_PAN:
- case ARMMMUIdx_SE10_1:
- case ARMMMUIdx_SE10_1_PAN:
return 1;
case ARMMMUIdx_E2:
case ARMMMUIdx_E20_2:
case ARMMMUIdx_E20_2_PAN:
- case ARMMMUIdx_SE2:
- case ARMMMUIdx_SE20_2:
- case ARMMMUIdx_SE20_2_PAN:
return 2;
- case ARMMMUIdx_SE3:
+ case ARMMMUIdx_E3:
return 3;
default:
g_assert_not_reached();
@@ -10884,15 +10848,11 @@ ARMMMUIdx arm_mmu_idx_el(CPUARMState *env, int el)
}
break;
case 3:
- return ARMMMUIdx_SE3;
+ return ARMMMUIdx_E3;
default:
g_assert_not_reached();
}
- if (arm_is_secure_below_el3(env)) {
- idx &= ~ARM_MMU_IDX_A_NS;
- }
-
return idx;
}
@@ -11095,15 +11055,11 @@ static CPUARMTBFlags rebuild_hflags_a64(CPUARMState *env, int el, int fp_el,
switch (mmu_idx) {
case ARMMMUIdx_E10_1:
case ARMMMUIdx_E10_1_PAN:
- case ARMMMUIdx_SE10_1:
- case ARMMMUIdx_SE10_1_PAN:
/* TODO: ARMv8.3-NV */
DP_TBFLAG_A64(flags, UNPRIV, 1);
break;
case ARMMMUIdx_E20_2:
case ARMMMUIdx_E20_2_PAN:
- case ARMMMUIdx_SE20_2:
- case ARMMMUIdx_SE20_2_PAN:
/*
* Note that EL20_2 is gated by HCR_EL2.E2H == 1, but EL20_0 is
* gated by HCR_EL2.<E2H,TGE> == '11', and so is LDTR.
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 55e8f33c508..2055d684e63 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -65,12 +65,6 @@ unsigned int arm_pamax(ARMCPU *cpu)
ARMMMUIdx stage_1_mmu_idx(ARMMMUIdx mmu_idx)
{
switch (mmu_idx) {
- case ARMMMUIdx_SE10_0:
- return ARMMMUIdx_Stage1_SE0;
- case ARMMMUIdx_SE10_1:
- return ARMMMUIdx_Stage1_SE1;
- case ARMMMUIdx_SE10_1_PAN:
- return ARMMMUIdx_Stage1_SE1_PAN;
case ARMMMUIdx_E10_0:
return ARMMMUIdx_Stage1_E0;
case ARMMMUIdx_E10_1:
@@ -95,11 +89,8 @@ static bool regime_translation_big_endian(CPUARMState *env, ARMMMUIdx mmu_idx)
static bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx)
{
switch (mmu_idx) {
- case ARMMMUIdx_SE10_0:
case ARMMMUIdx_E20_0:
- case ARMMMUIdx_SE20_0:
case ARMMMUIdx_Stage1_E0:
- case ARMMMUIdx_Stage1_SE0:
case ARMMMUIdx_MUser:
case ARMMMUIdx_MSUser:
case ARMMMUIdx_MUserNegPri:
@@ -2304,7 +2295,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
s2_mmu_idx = (s2walk_secure
? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2);
- is_el0 = mmu_idx == ARMMMUIdx_E10_0 || mmu_idx == ARMMMUIdx_SE10_0;
+ is_el0 = mmu_idx == ARMMMUIdx_E10_0;
/*
* S1 is done, now do S2 translation.
@@ -2511,6 +2502,8 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
case ARMMMUIdx_Stage1_E1:
case ARMMMUIdx_Stage1_E1_PAN:
case ARMMMUIdx_E2:
+ is_secure = arm_is_secure_below_el3(env);
+ break;
case ARMMMUIdx_Stage2:
case ARMMMUIdx_MPrivNegPri:
case ARMMMUIdx_MUserNegPri:
@@ -2518,17 +2511,7 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
case ARMMMUIdx_MUser:
is_secure = false;
break;
- case ARMMMUIdx_SE3:
- case ARMMMUIdx_SE10_0:
- case ARMMMUIdx_SE10_1:
- case ARMMMUIdx_SE10_1_PAN:
- case ARMMMUIdx_SE20_0:
- case ARMMMUIdx_SE20_2:
- case ARMMMUIdx_SE20_2_PAN:
- case ARMMMUIdx_Stage1_SE0:
- case ARMMMUIdx_Stage1_SE1:
- case ARMMMUIdx_Stage1_SE1_PAN:
- case ARMMMUIdx_SE2:
+ case ARMMMUIdx_E3:
case ARMMMUIdx_Stage2_S:
case ARMMMUIdx_MSPrivNegPri:
case ARMMMUIdx_MSUserNegPri:
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 78b2d91ed40..5b67375f4ec 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -111,14 +111,6 @@ static int get_a64_user_mem_index(DisasContext *s)
case ARMMMUIdx_E20_2_PAN:
useridx = ARMMMUIdx_E20_0;
break;
- case ARMMMUIdx_SE10_1:
- case ARMMMUIdx_SE10_1_PAN:
- useridx = ARMMMUIdx_SE10_0;
- break;
- case ARMMMUIdx_SE20_2:
- case ARMMMUIdx_SE20_2_PAN:
- useridx = ARMMMUIdx_SE20_0;
- break;
default:
g_assert_not_reached();
}
diff --git a/target/arm/translate.c b/target/arm/translate.c
index ac647e02628..2f72afe019a 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -237,16 +237,12 @@ static inline int get_a32_user_mem_index(DisasContext *s)
* otherwise, access as if at PL0.
*/
switch (s->mmu_idx) {
+ case ARMMMUIdx_E3:
case ARMMMUIdx_E2: /* this one is UNPREDICTABLE */
case ARMMMUIdx_E10_0:
case ARMMMUIdx_E10_1:
case ARMMMUIdx_E10_1_PAN:
return arm_to_core_mmu_idx(ARMMMUIdx_E10_0);
- case ARMMMUIdx_SE3:
- case ARMMMUIdx_SE10_0:
- case ARMMMUIdx_SE10_1:
- case ARMMMUIdx_SE10_1_PAN:
- return arm_to_core_mmu_idx(ARMMMUIdx_SE10_0);
case ARMMMUIdx_MUser:
case ARMMMUIdx_MPriv:
return arm_to_core_mmu_idx(ARMMMUIdx_MUser);
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 15/28] target/arm: Reorg regime_translation_disabled
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (13 preceding siblings ...)
2022-10-10 14:27 ` [PULL 14/28] target/arm: Fold secure and non-secure a-profile mmu indexes Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 16/28] target/arm: Drop secure check for HCR.TGE vs SCTLR_EL1.M Peter Maydell
` (13 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Use a switch on mmu_idx for the a-profile indexes, instead of
three different if's vs regime_el and arm_mmu_idx_is_stage1_of_2.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 32 +++++++++++++++++++++++++-------
1 file changed, 25 insertions(+), 7 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 2055d684e63..a514a78c924 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -148,21 +148,39 @@ static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx,
hcr_el2 = arm_hcr_el2_eff(env);
- if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
+ switch (mmu_idx) {
+ case ARMMMUIdx_Stage2:
+ case ARMMMUIdx_Stage2_S:
/* HCR.DC means HCR.VM behaves as 1 */
return (hcr_el2 & (HCR_DC | HCR_VM)) == 0;
- }
- if (hcr_el2 & HCR_TGE) {
+ case ARMMMUIdx_E10_0:
+ case ARMMMUIdx_E10_1:
+ case ARMMMUIdx_E10_1_PAN:
/* TGE means that NS EL0/1 act as if SCTLR_EL1.M is zero */
- if (!is_secure && regime_el(env, mmu_idx) == 1) {
+ if (!is_secure && (hcr_el2 & HCR_TGE)) {
return true;
}
- }
+ break;
- if ((hcr_el2 & HCR_DC) && arm_mmu_idx_is_stage1_of_2(mmu_idx)) {
+ case ARMMMUIdx_Stage1_E0:
+ case ARMMMUIdx_Stage1_E1:
+ case ARMMMUIdx_Stage1_E1_PAN:
/* HCR.DC means SCTLR_EL1.M behaves as 0 */
- return true;
+ if (hcr_el2 & HCR_DC) {
+ return true;
+ }
+ break;
+
+ case ARMMMUIdx_E20_0:
+ case ARMMMUIdx_E20_2:
+ case ARMMMUIdx_E20_2_PAN:
+ case ARMMMUIdx_E2:
+ case ARMMMUIdx_E3:
+ break;
+
+ default:
+ g_assert_not_reached();
}
return (regime_sctlr(env, mmu_idx) & SCTLR_M) == 0;
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 16/28] target/arm: Drop secure check for HCR.TGE vs SCTLR_EL1.M
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (14 preceding siblings ...)
2022-10-10 14:27 ` [PULL 15/28] target/arm: Reorg regime_translation_disabled Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 17/28] target/arm: Introduce arm_hcr_el2_eff_secstate Peter Maydell
` (12 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
The effect of TGE does not only apply to non-secure state,
now that Secure EL2 exists.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-13-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index a514a78c924..b3e0db19369 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -157,8 +157,8 @@ static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx,
case ARMMMUIdx_E10_0:
case ARMMMUIdx_E10_1:
case ARMMMUIdx_E10_1_PAN:
- /* TGE means that NS EL0/1 act as if SCTLR_EL1.M is zero */
- if (!is_secure && (hcr_el2 & HCR_TGE)) {
+ /* TGE means that EL0/1 act as if SCTLR_EL1.M is zero */
+ if (hcr_el2 & HCR_TGE) {
return true;
}
break;
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 17/28] target/arm: Introduce arm_hcr_el2_eff_secstate
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (15 preceding siblings ...)
2022-10-10 14:27 ` [PULL 16/28] target/arm: Drop secure check for HCR.TGE vs SCTLR_EL1.M Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 18/28] target/arm: Hoist read of *is_secure in S1_ptw_translate Peter Maydell
` (11 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
For page walking, we may require HCR for a security state
that is not "current".
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-14-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/cpu.h | 20 +++++++++++++-------
target/arm/helper.c | 11 ++++++++---
2 files changed, 21 insertions(+), 10 deletions(-)
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 53f4c236e1f..d541392170e 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -2412,15 +2412,15 @@ static inline bool arm_is_secure(CPUARMState *env)
* Return true if the current security state has AArch64 EL2 or AArch32 Hyp.
* This corresponds to the pseudocode EL2Enabled()
*/
+static inline bool arm_is_el2_enabled_secstate(CPUARMState *env, bool secure)
+{
+ return arm_feature(env, ARM_FEATURE_EL2)
+ && (!secure || (env->cp15.scr_el3 & SCR_EEL2));
+}
+
static inline bool arm_is_el2_enabled(CPUARMState *env)
{
- if (arm_feature(env, ARM_FEATURE_EL2)) {
- if (arm_is_secure_below_el3(env)) {
- return (env->cp15.scr_el3 & SCR_EEL2) != 0;
- }
- return true;
- }
- return false;
+ return arm_is_el2_enabled_secstate(env, arm_is_secure_below_el3(env));
}
#else
@@ -2434,6 +2434,11 @@ static inline bool arm_is_secure(CPUARMState *env)
return false;
}
+static inline bool arm_is_el2_enabled_secstate(CPUARMState *env, bool secure)
+{
+ return false;
+}
+
static inline bool arm_is_el2_enabled(CPUARMState *env)
{
return false;
@@ -2446,6 +2451,7 @@ static inline bool arm_is_el2_enabled(CPUARMState *env)
* "for all purposes other than a direct read or write access of HCR_EL2."
* Not included here is HCR_RW.
*/
+uint64_t arm_hcr_el2_eff_secstate(CPUARMState *env, bool secure);
uint64_t arm_hcr_el2_eff(CPUARMState *env);
uint64_t arm_hcrx_el2_eff(CPUARMState *env);
diff --git a/target/arm/helper.c b/target/arm/helper.c
index b1b8725628b..f1266bb1579 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -5229,15 +5229,15 @@ static void hcr_writelow(CPUARMState *env, const ARMCPRegInfo *ri,
}
/*
- * Return the effective value of HCR_EL2.
+ * Return the effective value of HCR_EL2, at the given security state.
* Bits that are not included here:
* RW (read from SCR_EL3.RW as needed)
*/
-uint64_t arm_hcr_el2_eff(CPUARMState *env)
+uint64_t arm_hcr_el2_eff_secstate(CPUARMState *env, bool secure)
{
uint64_t ret = env->cp15.hcr_el2;
- if (!arm_is_el2_enabled(env)) {
+ if (!arm_is_el2_enabled_secstate(env, secure)) {
/*
* "This register has no effect if EL2 is not enabled in the
* current Security state". This is ARMv8.4-SecEL2 speak for
@@ -5296,6 +5296,11 @@ uint64_t arm_hcr_el2_eff(CPUARMState *env)
return ret;
}
+uint64_t arm_hcr_el2_eff(CPUARMState *env)
+{
+ return arm_hcr_el2_eff_secstate(env, arm_is_secure_below_el3(env));
+}
+
/*
* Corresponds to ARM pseudocode function ELIsInHost().
*/
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 18/28] target/arm: Hoist read of *is_secure in S1_ptw_translate
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (16 preceding siblings ...)
2022-10-10 14:27 ` [PULL 17/28] target/arm: Introduce arm_hcr_el2_eff_secstate Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 19/28] target/arm: Remove env argument from combined_attrs_fwb Peter Maydell
` (10 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Rename the argument to is_secure_ptr, and introduce a
local variable is_secure with the value. We only write
back to the pointer toward the end of the function.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-15-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 22 ++++++++++++----------
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index b3e0db19369..b40b4586f87 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -207,24 +207,25 @@ static bool ptw_attrs_are_device(CPUARMState *env, ARMCacheAttrs cacheattrs)
/* Translate a S1 pagetable walk through S2 if needed. */
static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
- hwaddr addr, bool *is_secure,
+ hwaddr addr, bool *is_secure_ptr,
ARMMMUFaultInfo *fi)
{
- ARMMMUIdx s2_mmu_idx = *is_secure ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2;
+ bool is_secure = *is_secure_ptr;
+ ARMMMUIdx s2_mmu_idx = is_secure ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2;
if (arm_mmu_idx_is_stage1_of_2(mmu_idx) &&
- !regime_translation_disabled(env, s2_mmu_idx, *is_secure)) {
+ !regime_translation_disabled(env, s2_mmu_idx, is_secure)) {
GetPhysAddrResult s2 = {};
int ret;
ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, s2_mmu_idx,
- *is_secure, false, &s2, fi);
+ is_secure, false, &s2, fi);
if (ret) {
assert(fi->type != ARMFault_None);
fi->s2addr = addr;
fi->stage2 = true;
fi->s1ptw = true;
- fi->s1ns = !*is_secure;
+ fi->s1ns = !is_secure;
return ~0;
}
if ((arm_hcr_el2_eff(env) & HCR_PTW) &&
@@ -237,19 +238,20 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
fi->s2addr = addr;
fi->stage2 = true;
fi->s1ptw = true;
- fi->s1ns = !*is_secure;
+ fi->s1ns = !is_secure;
return ~0;
}
if (arm_is_secure_below_el3(env)) {
/* Check if page table walk is to secure or non-secure PA space. */
- if (*is_secure) {
- *is_secure = !(env->cp15.vstcr_el2 & VSTCR_SW);
+ if (is_secure) {
+ is_secure = !(env->cp15.vstcr_el2 & VSTCR_SW);
} else {
- *is_secure = !(env->cp15.vtcr_el2 & VTCR_NSW);
+ is_secure = !(env->cp15.vtcr_el2 & VTCR_NSW);
}
+ *is_secure_ptr = is_secure;
} else {
- assert(!*is_secure);
+ assert(!is_secure);
}
addr = s2.phys;
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 19/28] target/arm: Remove env argument from combined_attrs_fwb
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (17 preceding siblings ...)
2022-10-10 14:27 ` [PULL 18/28] target/arm: Hoist read of *is_secure in S1_ptw_translate Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 20/28] target/arm: Pass HCR to attribute subroutines Peter Maydell
` (9 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
This value is unused.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221001162318.153420-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index b40b4586f87..7d607c2e7b5 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -2172,8 +2172,7 @@ static uint8_t force_cacheattr_nibble_wb(uint8_t attr)
* s1 and s2 for the HCR_EL2.FWB == 1 case, returning the
* combined attributes in MAIR_EL1 format.
*/
-static uint8_t combined_attrs_fwb(CPUARMState *env,
- ARMCacheAttrs s1, ARMCacheAttrs s2)
+static uint8_t combined_attrs_fwb(ARMCacheAttrs s1, ARMCacheAttrs s2)
{
switch (s2.attrs) {
case 7:
@@ -2246,7 +2245,7 @@ static ARMCacheAttrs combine_cacheattrs(CPUARMState *env,
/* Combine memory type and cacheability attributes */
if (arm_hcr_el2_eff(env) & HCR_FWB) {
- ret.attrs = combined_attrs_fwb(env, s1, s2);
+ ret.attrs = combined_attrs_fwb(s1, s2);
} else {
ret.attrs = combined_attrs_nofwb(env, s1, s2);
}
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 20/28] target/arm: Pass HCR to attribute subroutines.
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (18 preceding siblings ...)
2022-10-10 14:27 ` [PULL 19/28] target/arm: Remove env argument from combined_attrs_fwb Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 21/28] target/arm: Fix ATS12NSO* from S PL1 Peter Maydell
` (8 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
These subroutines did not need ENV for anything except
retrieving the effective value of HCR anyway.
We have computed the effective value of HCR in the callers,
and this will be especially important for interpreting HCR
in a non-current security state.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 30 +++++++++++++++++-------------
1 file changed, 17 insertions(+), 13 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 7d607c2e7b5..b4fd4d3fac1 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -186,7 +186,7 @@ static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx,
return (regime_sctlr(env, mmu_idx) & SCTLR_M) == 0;
}
-static bool ptw_attrs_are_device(CPUARMState *env, ARMCacheAttrs cacheattrs)
+static bool ptw_attrs_are_device(uint64_t hcr, ARMCacheAttrs cacheattrs)
{
/*
* For an S1 page table walk, the stage 1 attributes are always
@@ -198,7 +198,7 @@ static bool ptw_attrs_are_device(CPUARMState *env, ARMCacheAttrs cacheattrs)
* when cacheattrs.attrs bit [2] is 0.
*/
assert(cacheattrs.is_s2_format);
- if (arm_hcr_el2_eff(env) & HCR_FWB) {
+ if (hcr & HCR_FWB) {
return (cacheattrs.attrs & 0x4) == 0;
} else {
return (cacheattrs.attrs & 0xc) == 0;
@@ -216,6 +216,7 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
if (arm_mmu_idx_is_stage1_of_2(mmu_idx) &&
!regime_translation_disabled(env, s2_mmu_idx, is_secure)) {
GetPhysAddrResult s2 = {};
+ uint64_t hcr;
int ret;
ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, s2_mmu_idx,
@@ -228,8 +229,9 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
fi->s1ns = !is_secure;
return ~0;
}
- if ((arm_hcr_el2_eff(env) & HCR_PTW) &&
- ptw_attrs_are_device(env, s2.cacheattrs)) {
+
+ hcr = arm_hcr_el2_eff(env);
+ if ((hcr & HCR_PTW) && ptw_attrs_are_device(hcr, s2.cacheattrs)) {
/*
* PTW set and S1 walk touched S2 Device memory:
* generate Permission fault.
@@ -2059,14 +2061,14 @@ static bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address,
* ref: shared/translation/attrs/S2AttrDecode()
* .../S2ConvertAttrsHints()
*/
-static uint8_t convert_stage2_attrs(CPUARMState *env, uint8_t s2attrs)
+static uint8_t convert_stage2_attrs(uint64_t hcr, uint8_t s2attrs)
{
uint8_t hiattr = extract32(s2attrs, 2, 2);
uint8_t loattr = extract32(s2attrs, 0, 2);
uint8_t hihint = 0, lohint = 0;
if (hiattr != 0) { /* normal memory */
- if (arm_hcr_el2_eff(env) & HCR_CD) { /* cache disabled */
+ if (hcr & HCR_CD) { /* cache disabled */
hiattr = loattr = 1; /* non-cacheable */
} else {
if (hiattr != 1) { /* Write-through or write-back */
@@ -2112,12 +2114,12 @@ static uint8_t combine_cacheattr_nibble(uint8_t s1, uint8_t s2)
* s1 and s2 for the HCR_EL2.FWB == 0 case, returning the
* combined attributes in MAIR_EL1 format.
*/
-static uint8_t combined_attrs_nofwb(CPUARMState *env,
+static uint8_t combined_attrs_nofwb(uint64_t hcr,
ARMCacheAttrs s1, ARMCacheAttrs s2)
{
uint8_t s1lo, s2lo, s1hi, s2hi, s2_mair_attrs, ret_attrs;
- s2_mair_attrs = convert_stage2_attrs(env, s2.attrs);
+ s2_mair_attrs = convert_stage2_attrs(hcr, s2.attrs);
s1lo = extract32(s1.attrs, 0, 4);
s2lo = extract32(s2_mair_attrs, 0, 4);
@@ -2217,7 +2219,7 @@ static uint8_t combined_attrs_fwb(ARMCacheAttrs s1, ARMCacheAttrs s2)
* @s1: Attributes from stage 1 walk
* @s2: Attributes from stage 2 walk
*/
-static ARMCacheAttrs combine_cacheattrs(CPUARMState *env,
+static ARMCacheAttrs combine_cacheattrs(uint64_t hcr,
ARMCacheAttrs s1, ARMCacheAttrs s2)
{
ARMCacheAttrs ret;
@@ -2244,10 +2246,10 @@ static ARMCacheAttrs combine_cacheattrs(CPUARMState *env,
}
/* Combine memory type and cacheability attributes */
- if (arm_hcr_el2_eff(env) & HCR_FWB) {
+ if (hcr & HCR_FWB) {
ret.attrs = combined_attrs_fwb(s1, s2);
} else {
- ret.attrs = combined_attrs_nofwb(env, s1, s2);
+ ret.attrs = combined_attrs_nofwb(hcr, s1, s2);
}
/*
@@ -2290,6 +2292,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
ARMCacheAttrs cacheattrs1;
ARMMMUIdx s2_mmu_idx;
bool is_el0;
+ uint64_t hcr;
ret = get_phys_addr_with_secure(env, address, access_type,
s1_mmu_idx, is_secure, result, fi);
@@ -2338,7 +2341,8 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
}
/* Combine the S1 and S2 cache attributes. */
- if (arm_hcr_el2_eff(env) & HCR_DC) {
+ hcr = arm_hcr_el2_eff(env);
+ if (hcr & HCR_DC) {
/*
* HCR.DC forces the first stage attributes to
* Normal Non-Shareable,
@@ -2351,7 +2355,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
}
cacheattrs1.shareability = 0;
}
- result->cacheattrs = combine_cacheattrs(env, cacheattrs1,
+ result->cacheattrs = combine_cacheattrs(hcr, cacheattrs1,
result->cacheattrs);
/*
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 21/28] target/arm: Fix ATS12NSO* from S PL1
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (19 preceding siblings ...)
2022-10-10 14:27 ` [PULL 20/28] target/arm: Pass HCR to attribute subroutines Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 22/28] target/arm: Split out get_phys_addr_disabled Peter Maydell
` (7 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Use arm_hcr_el2_eff_secstate instead of arm_hcr_el2_eff, so
that we use is_secure instead of the current security state.
These AT* operations have been broken since arm_hcr_el2_eff
gained a check for "el2 enabled" for Secure EL2.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-18-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index b4fd4d3fac1..a589cec8e36 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -146,7 +146,7 @@ static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx,
}
}
- hcr_el2 = arm_hcr_el2_eff(env);
+ hcr_el2 = arm_hcr_el2_eff_secstate(env, is_secure);
switch (mmu_idx) {
case ARMMMUIdx_Stage2:
@@ -230,7 +230,7 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
return ~0;
}
- hcr = arm_hcr_el2_eff(env);
+ hcr = arm_hcr_el2_eff_secstate(env, is_secure);
if ((hcr & HCR_PTW) && ptw_attrs_are_device(hcr, s2.cacheattrs)) {
/*
* PTW set and S1 walk touched S2 Device memory:
@@ -2341,7 +2341,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
}
/* Combine the S1 and S2 cache attributes. */
- hcr = arm_hcr_el2_eff(env);
+ hcr = arm_hcr_el2_eff_secstate(env, is_secure);
if (hcr & HCR_DC) {
/*
* HCR.DC forces the first stage attributes to
@@ -2473,7 +2473,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
result->page_size = TARGET_PAGE_SIZE;
/* Fill in cacheattr a-la AArch64.TranslateAddressS1Off. */
- hcr = arm_hcr_el2_eff(env);
+ hcr = arm_hcr_el2_eff_secstate(env, is_secure);
result->cacheattrs.shareability = 0;
result->cacheattrs.is_s2_format = false;
if (hcr & HCR_DC) {
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 22/28] target/arm: Split out get_phys_addr_disabled
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (20 preceding siblings ...)
2022-10-10 14:27 ` [PULL 21/28] target/arm: Fix ATS12NSO* from S PL1 Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 23/28] target/arm: Fix cacheattr in get_phys_addr_disabled Peter Maydell
` (6 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-19-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 138 +++++++++++++++++++++++++----------------------
1 file changed, 74 insertions(+), 64 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index a589cec8e36..96ab99c7b6f 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -2272,6 +2272,78 @@ static ARMCacheAttrs combine_cacheattrs(uint64_t hcr,
return ret;
}
+/*
+ * MMU disabled. S1 addresses within aa64 translation regimes are
+ * still checked for bounds -- see AArch64.S1DisabledOutput().
+ */
+static bool get_phys_addr_disabled(CPUARMState *env, target_ulong address,
+ MMUAccessType access_type,
+ ARMMMUIdx mmu_idx, bool is_secure,
+ GetPhysAddrResult *result,
+ ARMMMUFaultInfo *fi)
+{
+ uint64_t hcr;
+ uint8_t memattr;
+
+ if (mmu_idx != ARMMMUIdx_Stage2 && mmu_idx != ARMMMUIdx_Stage2_S) {
+ int r_el = regime_el(env, mmu_idx);
+ if (arm_el_is_aa64(env, r_el)) {
+ int pamax = arm_pamax(env_archcpu(env));
+ uint64_t tcr = env->cp15.tcr_el[r_el];
+ int addrtop, tbi;
+
+ tbi = aa64_va_parameter_tbi(tcr, mmu_idx);
+ if (access_type == MMU_INST_FETCH) {
+ tbi &= ~aa64_va_parameter_tbid(tcr, mmu_idx);
+ }
+ tbi = (tbi >> extract64(address, 55, 1)) & 1;
+ addrtop = (tbi ? 55 : 63);
+
+ if (extract64(address, pamax, addrtop - pamax + 1) != 0) {
+ fi->type = ARMFault_AddressSize;
+ fi->level = 0;
+ fi->stage2 = false;
+ return 1;
+ }
+
+ /*
+ * When TBI is disabled, we've just validated that all of the
+ * bits above PAMax are zero, so logically we only need to
+ * clear the top byte for TBI. But it's clearer to follow
+ * the pseudocode set of addrdesc.paddress.
+ */
+ address = extract64(address, 0, 52);
+ }
+ }
+
+ result->phys = address;
+ result->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ result->page_size = TARGET_PAGE_SIZE;
+
+ /* Fill in cacheattr a-la AArch64.TranslateAddressS1Off. */
+ hcr = arm_hcr_el2_eff_secstate(env, is_secure);
+ result->cacheattrs.shareability = 0;
+ result->cacheattrs.is_s2_format = false;
+ if (hcr & HCR_DC) {
+ if (hcr & HCR_DCT) {
+ memattr = 0xf0; /* Tagged, Normal, WB, RWA */
+ } else {
+ memattr = 0xff; /* Normal, WB, RWA */
+ }
+ } else if (access_type == MMU_INST_FETCH) {
+ if (regime_sctlr(env, mmu_idx) & SCTLR_I) {
+ memattr = 0xee; /* Normal, WT, RA, NT */
+ } else {
+ memattr = 0x44; /* Normal, NC, No */
+ }
+ result->cacheattrs.shareability = 2; /* outer sharable */
+ } else {
+ memattr = 0x00; /* Device, nGnRnE */
+ }
+ result->cacheattrs.attrs = memattr;
+ return 0;
+}
+
bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
bool is_secure, GetPhysAddrResult *result,
@@ -2431,71 +2503,9 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
/* Definitely a real MMU, not an MPU */
if (regime_translation_disabled(env, mmu_idx, is_secure)) {
- uint64_t hcr;
- uint8_t memattr;
-
- /*
- * MMU disabled. S1 addresses within aa64 translation regimes are
- * still checked for bounds -- see AArch64.TranslateAddressS1Off.
- */
- if (mmu_idx != ARMMMUIdx_Stage2 && mmu_idx != ARMMMUIdx_Stage2_S) {
- int r_el = regime_el(env, mmu_idx);
- if (arm_el_is_aa64(env, r_el)) {
- int pamax = arm_pamax(env_archcpu(env));
- uint64_t tcr = env->cp15.tcr_el[r_el];
- int addrtop, tbi;
-
- tbi = aa64_va_parameter_tbi(tcr, mmu_idx);
- if (access_type == MMU_INST_FETCH) {
- tbi &= ~aa64_va_parameter_tbid(tcr, mmu_idx);
- }
- tbi = (tbi >> extract64(address, 55, 1)) & 1;
- addrtop = (tbi ? 55 : 63);
-
- if (extract64(address, pamax, addrtop - pamax + 1) != 0) {
- fi->type = ARMFault_AddressSize;
- fi->level = 0;
- fi->stage2 = false;
- return 1;
- }
-
- /*
- * When TBI is disabled, we've just validated that all of the
- * bits above PAMax are zero, so logically we only need to
- * clear the top byte for TBI. But it's clearer to follow
- * the pseudocode set of addrdesc.paddress.
- */
- address = extract64(address, 0, 52);
- }
- }
- result->phys = address;
- result->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- result->page_size = TARGET_PAGE_SIZE;
-
- /* Fill in cacheattr a-la AArch64.TranslateAddressS1Off. */
- hcr = arm_hcr_el2_eff_secstate(env, is_secure);
- result->cacheattrs.shareability = 0;
- result->cacheattrs.is_s2_format = false;
- if (hcr & HCR_DC) {
- if (hcr & HCR_DCT) {
- memattr = 0xf0; /* Tagged, Normal, WB, RWA */
- } else {
- memattr = 0xff; /* Normal, WB, RWA */
- }
- } else if (access_type == MMU_INST_FETCH) {
- if (regime_sctlr(env, mmu_idx) & SCTLR_I) {
- memattr = 0xee; /* Normal, WT, RA, NT */
- } else {
- memattr = 0x44; /* Normal, NC, No */
- }
- result->cacheattrs.shareability = 2; /* outer sharable */
- } else {
- memattr = 0x00; /* Device, nGnRnE */
- }
- result->cacheattrs.attrs = memattr;
- return 0;
+ return get_phys_addr_disabled(env, address, access_type, mmu_idx,
+ is_secure, result, fi);
}
-
if (regime_using_lpae_format(env, mmu_idx)) {
return get_phys_addr_lpae(env, address, access_type, mmu_idx,
is_secure, false, result, fi);
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 23/28] target/arm: Fix cacheattr in get_phys_addr_disabled
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (21 preceding siblings ...)
2022-10-10 14:27 ` [PULL 22/28] target/arm: Split out get_phys_addr_disabled Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 24/28] target/arm: Use tlb_set_page_full Peter Maydell
` (5 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Do not apply memattr or shareability for Stage2 translations.
Make sure to apply HCR_{DC,DCT} only to Regime_EL10, per the
pseudocode in AArch64.S1DisabledOutput.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221001162318.153420-20-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/ptw.c | 48 +++++++++++++++++++++++++-----------------------
1 file changed, 25 insertions(+), 23 deletions(-)
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 96ab99c7b6f..15c37b52c97 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -2282,11 +2282,12 @@ static bool get_phys_addr_disabled(CPUARMState *env, target_ulong address,
GetPhysAddrResult *result,
ARMMMUFaultInfo *fi)
{
- uint64_t hcr;
- uint8_t memattr;
+ uint8_t memattr = 0x00; /* Device nGnRnE */
+ uint8_t shareability = 0; /* non-sharable */
if (mmu_idx != ARMMMUIdx_Stage2 && mmu_idx != ARMMMUIdx_Stage2_S) {
int r_el = regime_el(env, mmu_idx);
+
if (arm_el_is_aa64(env, r_el)) {
int pamax = arm_pamax(env_archcpu(env));
uint64_t tcr = env->cp15.tcr_el[r_el];
@@ -2314,32 +2315,33 @@ static bool get_phys_addr_disabled(CPUARMState *env, target_ulong address,
*/
address = extract64(address, 0, 52);
}
+
+ /* Fill in cacheattr a-la AArch64.TranslateAddressS1Off. */
+ if (r_el == 1) {
+ uint64_t hcr = arm_hcr_el2_eff_secstate(env, is_secure);
+ if (hcr & HCR_DC) {
+ if (hcr & HCR_DCT) {
+ memattr = 0xf0; /* Tagged, Normal, WB, RWA */
+ } else {
+ memattr = 0xff; /* Normal, WB, RWA */
+ }
+ }
+ }
+ if (memattr == 0 && access_type == MMU_INST_FETCH) {
+ if (regime_sctlr(env, mmu_idx) & SCTLR_I) {
+ memattr = 0xee; /* Normal, WT, RA, NT */
+ } else {
+ memattr = 0x44; /* Normal, NC, No */
+ }
+ shareability = 2; /* outer sharable */
+ }
+ result->cacheattrs.is_s2_format = false;
}
result->phys = address;
result->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
result->page_size = TARGET_PAGE_SIZE;
-
- /* Fill in cacheattr a-la AArch64.TranslateAddressS1Off. */
- hcr = arm_hcr_el2_eff_secstate(env, is_secure);
- result->cacheattrs.shareability = 0;
- result->cacheattrs.is_s2_format = false;
- if (hcr & HCR_DC) {
- if (hcr & HCR_DCT) {
- memattr = 0xf0; /* Tagged, Normal, WB, RWA */
- } else {
- memattr = 0xff; /* Normal, WB, RWA */
- }
- } else if (access_type == MMU_INST_FETCH) {
- if (regime_sctlr(env, mmu_idx) & SCTLR_I) {
- memattr = 0xee; /* Normal, WT, RA, NT */
- } else {
- memattr = 0x44; /* Normal, NC, No */
- }
- result->cacheattrs.shareability = 2; /* outer sharable */
- } else {
- memattr = 0x00; /* Device, nGnRnE */
- }
+ result->cacheattrs.shareability = shareability;
result->cacheattrs.attrs = memattr;
return 0;
}
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 24/28] target/arm: Use tlb_set_page_full
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (22 preceding siblings ...)
2022-10-10 14:27 ` [PULL 23/28] target/arm: Fix cacheattr in get_phys_addr_disabled Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 25/28] hw/arm/boot: set CPTR_EL3.ESM and SCR_EL3.EnTP2 when booting Linux with EL3 Peter Maydell
` (4 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Richard Henderson <richard.henderson@linaro.org>
Adjust GetPhysAddrResult to fill in CPUTLBEntryFull,
so that it may be passed directly to tlb_set_page_full.
The change is large, but mostly mechanical. The major
non-mechanical change is page_size -> lg_page_size.
Most of the time this is obvious, and is related to
TARGET_PAGE_BITS.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221001162318.153420-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/internals.h | 5 +-
target/arm/helper.c | 12 +--
target/arm/m_helper.c | 20 ++---
target/arm/ptw.c | 179 ++++++++++++++++++++--------------------
target/arm/tlb_helper.c | 9 +-
5 files changed, 111 insertions(+), 114 deletions(-)
diff --git a/target/arm/internals.h b/target/arm/internals.h
index b509d708514..fd17aee4599 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -1071,10 +1071,7 @@ typedef struct ARMCacheAttrs {
/* Fields that are valid upon success. */
typedef struct GetPhysAddrResult {
- hwaddr phys;
- target_ulong page_size;
- int prot;
- MemTxAttrs attrs;
+ CPUTLBEntryFull f;
ARMCacheAttrs cacheattrs;
} GetPhysAddrResult;
diff --git a/target/arm/helper.c b/target/arm/helper.c
index f1266bb1579..e1338ed6e22 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -3323,8 +3323,8 @@ static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
/* Create a 64-bit PAR */
par64 = (1 << 11); /* LPAE bit always set */
if (!ret) {
- par64 |= res.phys & ~0xfffULL;
- if (!res.attrs.secure) {
+ par64 |= res.f.phys_addr & ~0xfffULL;
+ if (!res.f.attrs.secure) {
par64 |= (1 << 9); /* NS */
}
par64 |= (uint64_t)res.cacheattrs.attrs << 56; /* ATTR */
@@ -3348,13 +3348,13 @@ static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
*/
if (!ret) {
/* We do not set any attribute bits in the PAR */
- if (res.page_size == (1 << 24)
+ if (res.f.lg_page_size == 24
&& arm_feature(env, ARM_FEATURE_V7)) {
- par64 = (res.phys & 0xff000000) | (1 << 1);
+ par64 = (res.f.phys_addr & 0xff000000) | (1 << 1);
} else {
- par64 = res.phys & 0xfffff000;
+ par64 = res.f.phys_addr & 0xfffff000;
}
- if (!res.attrs.secure) {
+ if (!res.f.attrs.secure) {
par64 |= (1 << 9); /* NS */
}
} else {
diff --git a/target/arm/m_helper.c b/target/arm/m_helper.c
index 203ba411f64..355cd4d60a7 100644
--- a/target/arm/m_helper.c
+++ b/target/arm/m_helper.c
@@ -223,8 +223,8 @@ static bool v7m_stack_write(ARMCPU *cpu, uint32_t addr, uint32_t value,
}
goto pend_fault;
}
- address_space_stl_le(arm_addressspace(cs, res.attrs), res.phys, value,
- res.attrs, &txres);
+ address_space_stl_le(arm_addressspace(cs, res.f.attrs), res.f.phys_addr,
+ value, res.f.attrs, &txres);
if (txres != MEMTX_OK) {
/* BusFault trying to write the data */
if (mode == STACK_LAZYFP) {
@@ -298,8 +298,8 @@ static bool v7m_stack_read(ARMCPU *cpu, uint32_t *dest, uint32_t addr,
goto pend_fault;
}
- value = address_space_ldl(arm_addressspace(cs, res.attrs), res.phys,
- res.attrs, &txres);
+ value = address_space_ldl(arm_addressspace(cs, res.f.attrs),
+ res.f.phys_addr, res.f.attrs, &txres);
if (txres != MEMTX_OK) {
/* BusFault trying to read the data */
qemu_log_mask(CPU_LOG_INT, "...BusFault with BFSR.UNSTKERR\n");
@@ -2022,8 +2022,8 @@ static bool v7m_read_half_insn(ARMCPU *cpu, ARMMMUIdx mmu_idx, bool secure,
qemu_log_mask(CPU_LOG_INT, "...really MemManage with CFSR.IACCVIOL\n");
return false;
}
- *insn = address_space_lduw_le(arm_addressspace(cs, res.attrs), res.phys,
- res.attrs, &txres);
+ *insn = address_space_lduw_le(arm_addressspace(cs, res.f.attrs),
+ res.f.phys_addr, res.f.attrs, &txres);
if (txres != MEMTX_OK) {
env->v7m.cfsr[M_REG_NS] |= R_V7M_CFSR_IBUSERR_MASK;
armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_BUS, false);
@@ -2069,8 +2069,8 @@ static bool v7m_read_sg_stack_word(ARMCPU *cpu, ARMMMUIdx mmu_idx,
}
return false;
}
- value = address_space_ldl(arm_addressspace(cs, res.attrs), res.phys,
- res.attrs, &txres);
+ value = address_space_ldl(arm_addressspace(cs, res.f.attrs),
+ res.f.phys_addr, res.f.attrs, &txres);
if (txres != MEMTX_OK) {
/* BusFault trying to read the data */
qemu_log_mask(CPU_LOG_INT,
@@ -2817,8 +2817,8 @@ uint32_t HELPER(v7m_tt)(CPUARMState *env, uint32_t addr, uint32_t op)
} else {
mrvalid = true;
}
- r = res.prot & PAGE_READ;
- rw = res.prot & PAGE_WRITE;
+ r = res.f.prot & PAGE_READ;
+ rw = res.f.prot & PAGE_WRITE;
} else {
r = false;
rw = false;
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 15c37b52c97..ddacffa7ee6 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -256,7 +256,7 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
assert(!is_secure);
}
- addr = s2.phys;
+ addr = s2.f.phys_addr;
}
return addr;
}
@@ -476,7 +476,7 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
/* 1Mb section. */
phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
ap = (desc >> 10) & 3;
- result->page_size = 1024 * 1024;
+ result->f.lg_page_size = 20; /* 1MB */
} else {
/* Lookup l2 entry. */
if (type == 1) {
@@ -497,12 +497,12 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
case 1: /* 64k page. */
phys_addr = (desc & 0xffff0000) | (address & 0xffff);
ap = (desc >> (4 + ((address >> 13) & 6))) & 3;
- result->page_size = 0x10000;
+ result->f.lg_page_size = 16;
break;
case 2: /* 4k page. */
phys_addr = (desc & 0xfffff000) | (address & 0xfff);
ap = (desc >> (4 + ((address >> 9) & 6))) & 3;
- result->page_size = 0x1000;
+ result->f.lg_page_size = 12;
break;
case 3: /* 1k page, or ARMv6/XScale "extended small (4k) page" */
if (type == 1) {
@@ -510,7 +510,7 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
if (arm_feature(env, ARM_FEATURE_XSCALE)
|| arm_feature(env, ARM_FEATURE_V6)) {
phys_addr = (desc & 0xfffff000) | (address & 0xfff);
- result->page_size = 0x1000;
+ result->f.lg_page_size = 12;
} else {
/*
* UNPREDICTABLE in ARMv5; we choose to take a
@@ -521,7 +521,7 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
}
} else {
phys_addr = (desc & 0xfffffc00) | (address & 0x3ff);
- result->page_size = 0x400;
+ result->f.lg_page_size = 10;
}
ap = (desc >> 4) & 3;
break;
@@ -530,14 +530,14 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
g_assert_not_reached();
}
}
- result->prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
- result->prot |= result->prot ? PAGE_EXEC : 0;
- if (!(result->prot & (1 << access_type))) {
+ result->f.prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
+ result->f.prot |= result->f.prot ? PAGE_EXEC : 0;
+ if (!(result->f.prot & (1 << access_type))) {
/* Access permission fault. */
fi->type = ARMFault_Permission;
goto do_fault;
}
- result->phys = phys_addr;
+ result->f.phys_addr = phys_addr;
return false;
do_fault:
fi->domain = domain;
@@ -607,11 +607,11 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
phys_addr = (desc & 0xff000000) | (address & 0x00ffffff);
phys_addr |= (uint64_t)extract32(desc, 20, 4) << 32;
phys_addr |= (uint64_t)extract32(desc, 5, 4) << 36;
- result->page_size = 0x1000000;
+ result->f.lg_page_size = 24; /* 16MB */
} else {
/* Section. */
phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
- result->page_size = 0x100000;
+ result->f.lg_page_size = 20; /* 1MB */
}
ap = ((desc >> 10) & 3) | ((desc >> 13) & 4);
xn = desc & (1 << 4);
@@ -636,12 +636,12 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
case 1: /* 64k page. */
phys_addr = (desc & 0xffff0000) | (address & 0xffff);
xn = desc & (1 << 15);
- result->page_size = 0x10000;
+ result->f.lg_page_size = 16;
break;
case 2: case 3: /* 4k page. */
phys_addr = (desc & 0xfffff000) | (address & 0xfff);
xn = desc & 1;
- result->page_size = 0x1000;
+ result->f.lg_page_size = 12;
break;
default:
/* Never happens, but compiler isn't smart enough to tell. */
@@ -649,7 +649,7 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
}
}
if (domain_prot == 3) {
- result->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ result->f.prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
} else {
if (pxn && !regime_is_user(env, mmu_idx)) {
xn = 1;
@@ -667,14 +667,14 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
fi->type = ARMFault_AccessFlag;
goto do_fault;
}
- result->prot = simple_ap_to_rw_prot(env, mmu_idx, ap >> 1);
+ result->f.prot = simple_ap_to_rw_prot(env, mmu_idx, ap >> 1);
} else {
- result->prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
+ result->f.prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
}
- if (result->prot && !xn) {
- result->prot |= PAGE_EXEC;
+ if (result->f.prot && !xn) {
+ result->f.prot |= PAGE_EXEC;
}
- if (!(result->prot & (1 << access_type))) {
+ if (!(result->f.prot & (1 << access_type))) {
/* Access permission fault. */
fi->type = ARMFault_Permission;
goto do_fault;
@@ -685,9 +685,9 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
* the CPU doesn't support TZ or this is a non-secure translation
* regime, because the attribute will already be non-secure.
*/
- result->attrs.secure = false;
+ result->f.attrs.secure = false;
}
- result->phys = phys_addr;
+ result->f.phys_addr = phys_addr;
return false;
do_fault:
fi->domain = domain;
@@ -1298,16 +1298,16 @@ static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
ns = mmu_idx == ARMMMUIdx_Stage2;
xn = extract32(attrs, 11, 2);
- result->prot = get_S2prot(env, ap, xn, s1_is_el0);
+ result->f.prot = get_S2prot(env, ap, xn, s1_is_el0);
} else {
ns = extract32(attrs, 3, 1);
xn = extract32(attrs, 12, 1);
pxn = extract32(attrs, 11, 1);
- result->prot = get_S1prot(env, mmu_idx, aarch64, ap, ns, xn, pxn);
+ result->f.prot = get_S1prot(env, mmu_idx, aarch64, ap, ns, xn, pxn);
}
fault_type = ARMFault_Permission;
- if (!(result->prot & (1 << access_type))) {
+ if (!(result->f.prot & (1 << access_type))) {
goto do_fault;
}
@@ -1317,11 +1317,11 @@ static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
* the CPU doesn't support TZ or this is a non-secure translation
* regime, because the attribute will already be non-secure.
*/
- result->attrs.secure = false;
+ result->f.attrs.secure = false;
}
/* When in aarch64 mode, and BTI is enabled, remember GP in the IOTLB. */
if (aarch64 && guarded && cpu_isar_feature(aa64_bti, cpu)) {
- arm_tlb_bti_gp(&result->attrs) = true;
+ arm_tlb_bti_gp(&result->f.attrs) = true;
}
if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
@@ -1347,8 +1347,8 @@ static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
result->cacheattrs.shareability = extract32(attrs, 6, 2);
}
- result->phys = descaddr;
- result->page_size = page_size;
+ result->f.phys_addr = descaddr;
+ result->f.lg_page_size = ctz64(page_size);
return false;
do_fault:
@@ -1373,12 +1373,12 @@ static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
if (regime_translation_disabled(env, mmu_idx, is_secure)) {
/* MPU disabled. */
- result->phys = address;
- result->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ result->f.phys_addr = address;
+ result->f.prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
return false;
}
- result->phys = address;
+ result->f.phys_addr = address;
for (n = 7; n >= 0; n--) {
base = env->cp15.c6_region[n];
if ((base & 1) == 0) {
@@ -1414,16 +1414,16 @@ static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
fi->level = 1;
return true;
}
- result->prot = PAGE_READ | PAGE_WRITE;
+ result->f.prot = PAGE_READ | PAGE_WRITE;
break;
case 2:
- result->prot = PAGE_READ;
+ result->f.prot = PAGE_READ;
if (!is_user) {
- result->prot |= PAGE_WRITE;
+ result->f.prot |= PAGE_WRITE;
}
break;
case 3:
- result->prot = PAGE_READ | PAGE_WRITE;
+ result->f.prot = PAGE_READ | PAGE_WRITE;
break;
case 5:
if (is_user) {
@@ -1431,10 +1431,10 @@ static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
fi->level = 1;
return true;
}
- result->prot = PAGE_READ;
+ result->f.prot = PAGE_READ;
break;
case 6:
- result->prot = PAGE_READ;
+ result->f.prot = PAGE_READ;
break;
default:
/* Bad permission. */
@@ -1442,12 +1442,12 @@ static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
fi->level = 1;
return true;
}
- result->prot |= PAGE_EXEC;
+ result->f.prot |= PAGE_EXEC;
return false;
}
static void get_phys_addr_pmsav7_default(CPUARMState *env, ARMMMUIdx mmu_idx,
- int32_t address, int *prot)
+ int32_t address, uint8_t *prot)
{
if (!arm_feature(env, ARM_FEATURE_M)) {
*prot = PAGE_READ | PAGE_WRITE;
@@ -1531,9 +1531,9 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
int n;
bool is_user = regime_is_user(env, mmu_idx);
- result->phys = address;
- result->page_size = TARGET_PAGE_SIZE;
- result->prot = 0;
+ result->f.phys_addr = address;
+ result->f.lg_page_size = TARGET_PAGE_BITS;
+ result->f.prot = 0;
if (regime_translation_disabled(env, mmu_idx, secure) ||
m_is_ppb_region(env, address)) {
@@ -1545,7 +1545,7 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
* which always does a direct read using address_space_ldl(), rather
* than going via this function, so we don't need to check that here.
*/
- get_phys_addr_pmsav7_default(env, mmu_idx, address, &result->prot);
+ get_phys_addr_pmsav7_default(env, mmu_idx, address, &result->f.prot);
} else { /* MPU enabled */
for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) {
/* region search */
@@ -1587,7 +1587,7 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
if (ranges_overlap(base, rmask,
address & TARGET_PAGE_MASK,
TARGET_PAGE_SIZE)) {
- result->page_size = 1;
+ result->f.lg_page_size = 0;
}
continue;
}
@@ -1625,7 +1625,7 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
continue;
}
if (rsize < TARGET_PAGE_BITS) {
- result->page_size = 1 << rsize;
+ result->f.lg_page_size = rsize;
}
break;
}
@@ -1636,7 +1636,8 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
fi->type = ARMFault_Background;
return true;
}
- get_phys_addr_pmsav7_default(env, mmu_idx, address, &result->prot);
+ get_phys_addr_pmsav7_default(env, mmu_idx, address,
+ &result->f.prot);
} else { /* a MPU hit! */
uint32_t ap = extract32(env->pmsav7.dracr[n], 8, 3);
uint32_t xn = extract32(env->pmsav7.dracr[n], 12, 1);
@@ -1653,16 +1654,16 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
case 5:
break; /* no access */
case 3:
- result->prot |= PAGE_WRITE;
+ result->f.prot |= PAGE_WRITE;
/* fall through */
case 2:
case 6:
- result->prot |= PAGE_READ | PAGE_EXEC;
+ result->f.prot |= PAGE_READ | PAGE_EXEC;
break;
case 7:
/* for v7M, same as 6; for R profile a reserved value */
if (arm_feature(env, ARM_FEATURE_M)) {
- result->prot |= PAGE_READ | PAGE_EXEC;
+ result->f.prot |= PAGE_READ | PAGE_EXEC;
break;
}
/* fall through */
@@ -1678,16 +1679,16 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
case 1:
case 2:
case 3:
- result->prot |= PAGE_WRITE;
+ result->f.prot |= PAGE_WRITE;
/* fall through */
case 5:
case 6:
- result->prot |= PAGE_READ | PAGE_EXEC;
+ result->f.prot |= PAGE_READ | PAGE_EXEC;
break;
case 7:
/* for v7M, same as 6; for R profile a reserved value */
if (arm_feature(env, ARM_FEATURE_M)) {
- result->prot |= PAGE_READ | PAGE_EXEC;
+ result->f.prot |= PAGE_READ | PAGE_EXEC;
break;
}
/* fall through */
@@ -1700,14 +1701,14 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
/* execute never */
if (xn) {
- result->prot &= ~PAGE_EXEC;
+ result->f.prot &= ~PAGE_EXEC;
}
}
}
fi->type = ARMFault_Permission;
fi->level = 1;
- return !(result->prot & (1 << access_type));
+ return !(result->f.prot & (1 << access_type));
}
bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
@@ -1733,9 +1734,9 @@ bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
uint32_t addr_page_base = address & TARGET_PAGE_MASK;
uint32_t addr_page_limit = addr_page_base + (TARGET_PAGE_SIZE - 1);
- result->page_size = TARGET_PAGE_SIZE;
- result->phys = address;
- result->prot = 0;
+ result->f.lg_page_size = TARGET_PAGE_BITS;
+ result->f.phys_addr = address;
+ result->f.prot = 0;
if (mregion) {
*mregion = -1;
}
@@ -1785,13 +1786,13 @@ bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
ranges_overlap(base, limit - base + 1,
addr_page_base,
TARGET_PAGE_SIZE)) {
- result->page_size = 1;
+ result->f.lg_page_size = 0;
}
continue;
}
if (base > addr_page_base || limit < addr_page_limit) {
- result->page_size = 1;
+ result->f.lg_page_size = 0;
}
if (matchregion != -1) {
@@ -1817,7 +1818,7 @@ bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
if (matchregion == -1) {
/* hit using the background region */
- get_phys_addr_pmsav7_default(env, mmu_idx, address, &result->prot);
+ get_phys_addr_pmsav7_default(env, mmu_idx, address, &result->f.prot);
} else {
uint32_t ap = extract32(env->pmsav8.rbar[secure][matchregion], 1, 2);
uint32_t xn = extract32(env->pmsav8.rbar[secure][matchregion], 0, 1);
@@ -1832,9 +1833,9 @@ bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
xn = 1;
}
- result->prot = simple_ap_to_rw_prot(env, mmu_idx, ap);
- if (result->prot && !xn && !(pxn && !is_user)) {
- result->prot |= PAGE_EXEC;
+ result->f.prot = simple_ap_to_rw_prot(env, mmu_idx, ap);
+ if (result->f.prot && !xn && !(pxn && !is_user)) {
+ result->f.prot |= PAGE_EXEC;
}
/*
* We don't need to look the attribute up in the MAIR0/MAIR1
@@ -1847,7 +1848,7 @@ bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
fi->type = ARMFault_Permission;
fi->level = 1;
- return !(result->prot & (1 << access_type));
+ return !(result->f.prot & (1 << access_type));
}
static bool v8m_is_sau_exempt(CPUARMState *env,
@@ -2011,9 +2012,9 @@ static bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address,
} else {
fi->type = ARMFault_QEMU_SFault;
}
- result->page_size = sattrs.subpage ? 1 : TARGET_PAGE_SIZE;
- result->phys = address;
- result->prot = 0;
+ result->f.lg_page_size = sattrs.subpage ? 0 : TARGET_PAGE_BITS;
+ result->f.phys_addr = address;
+ result->f.prot = 0;
return true;
}
} else {
@@ -2023,7 +2024,7 @@ static bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address,
* might downgrade a secure access to nonsecure.
*/
if (sattrs.ns) {
- result->attrs.secure = false;
+ result->f.attrs.secure = false;
} else if (!secure) {
/*
* NS access to S memory must fault.
@@ -2036,9 +2037,9 @@ static bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address,
* for M_FAKE_FSR_SFAULT in arm_v7m_cpu_do_interrupt().
*/
fi->type = ARMFault_QEMU_SFault;
- result->page_size = sattrs.subpage ? 1 : TARGET_PAGE_SIZE;
- result->phys = address;
- result->prot = 0;
+ result->f.lg_page_size = sattrs.subpage ? 0 : TARGET_PAGE_BITS;
+ result->f.phys_addr = address;
+ result->f.prot = 0;
return true;
}
}
@@ -2047,7 +2048,7 @@ static bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address,
ret = pmsav8_mpu_lookup(env, address, access_type, mmu_idx, secure,
result, fi, NULL);
if (sattrs.subpage) {
- result->page_size = 1;
+ result->f.lg_page_size = 0;
}
return ret;
}
@@ -2338,9 +2339,9 @@ static bool get_phys_addr_disabled(CPUARMState *env, target_ulong address,
result->cacheattrs.is_s2_format = false;
}
- result->phys = address;
- result->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- result->page_size = TARGET_PAGE_SIZE;
+ result->f.phys_addr = address;
+ result->f.prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ result->f.lg_page_size = TARGET_PAGE_BITS;
result->cacheattrs.shareability = shareability;
result->cacheattrs.attrs = memattr;
return 0;
@@ -2377,8 +2378,8 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
return ret;
}
- ipa = result->phys;
- ipa_secure = result->attrs.secure;
+ ipa = result->f.phys_addr;
+ ipa_secure = result->f.attrs.secure;
if (is_secure) {
/* Select TCR based on the NS bit from the S1 walk. */
s2walk_secure = !(ipa_secure
@@ -2398,7 +2399,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
* Save the stage1 results so that we may merge
* prot and cacheattrs later.
*/
- s1_prot = result->prot;
+ s1_prot = result->f.prot;
cacheattrs1 = result->cacheattrs;
memset(result, 0, sizeof(*result));
@@ -2407,7 +2408,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
fi->s2addr = ipa;
/* Combine the S1 and S2 perms. */
- result->prot &= s1_prot;
+ result->f.prot &= s1_prot;
/* If S2 fails, return early. */
if (ret) {
@@ -2436,7 +2437,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
* Check if IPA translates to secure or non-secure PA space.
* Note that VSTCR overrides VTCR and {N}SW overrides {N}SA.
*/
- result->attrs.secure =
+ result->f.attrs.secure =
(is_secure
&& !(env->cp15.vstcr_el2 & (VSTCR_SA | VSTCR_SW))
&& (ipa_secure
@@ -2456,8 +2457,8 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
* cannot upgrade an non-secure translation regime's attributes
* to secure.
*/
- result->attrs.secure = is_secure;
- result->attrs.user = regime_is_user(env, mmu_idx);
+ result->f.attrs.secure = is_secure;
+ result->f.attrs.user = regime_is_user(env, mmu_idx);
/*
* Fast Context Switch Extension. This doesn't exist at all in v8.
@@ -2474,7 +2475,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
if (arm_feature(env, ARM_FEATURE_PMSA)) {
bool ret;
- result->page_size = TARGET_PAGE_SIZE;
+ result->f.lg_page_size = TARGET_PAGE_BITS;
if (arm_feature(env, ARM_FEATURE_V8)) {
/* PMSAv8 */
@@ -2495,9 +2496,9 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address,
(access_type == MMU_DATA_STORE ? "writing" : "execute"),
(uint32_t)address, mmu_idx,
ret ? "Miss" : "Hit",
- result->prot & PAGE_READ ? 'r' : '-',
- result->prot & PAGE_WRITE ? 'w' : '-',
- result->prot & PAGE_EXEC ? 'x' : '-');
+ result->f.prot & PAGE_READ ? 'r' : '-',
+ result->f.prot & PAGE_WRITE ? 'w' : '-',
+ result->f.prot & PAGE_EXEC ? 'x' : '-');
return ret;
}
@@ -2572,10 +2573,10 @@ hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr,
bool ret;
ret = get_phys_addr(env, addr, MMU_DATA_LOAD, mmu_idx, &res, &fi);
- *attrs = res.attrs;
+ *attrs = res.f.attrs;
if (ret) {
return -1;
}
- return res.phys;
+ return res.f.phys_addr;
}
diff --git a/target/arm/tlb_helper.c b/target/arm/tlb_helper.c
index ad225b1cb20..49601394ec1 100644
--- a/target/arm/tlb_helper.c
+++ b/target/arm/tlb_helper.c
@@ -227,17 +227,16 @@ bool arm_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
* target page size are handled specially, so for those we
* pass in the exact addresses.
*/
- if (res.page_size >= TARGET_PAGE_SIZE) {
- res.phys &= TARGET_PAGE_MASK;
+ if (res.f.lg_page_size >= TARGET_PAGE_BITS) {
+ res.f.phys_addr &= TARGET_PAGE_MASK;
address &= TARGET_PAGE_MASK;
}
/* Notice and record tagged memory. */
if (cpu_isar_feature(aa64_mte, cpu) && res.cacheattrs.attrs == 0xf0) {
- arm_tlb_mte_tagged(&res.attrs) = true;
+ arm_tlb_mte_tagged(&res.f.attrs) = true;
}
- tlb_set_page_with_attrs(cs, address, res.phys, res.attrs,
- res.prot, mmu_idx, res.page_size);
+ tlb_set_page_full(cs, mmu_idx, address, &res.f);
return true;
} else if (probe) {
return false;
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 25/28] hw/arm/boot: set CPTR_EL3.ESM and SCR_EL3.EnTP2 when booting Linux with EL3
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (23 preceding siblings ...)
2022-10-10 14:27 ` [PULL 24/28] target/arm: Use tlb_set_page_full Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 26/28] target/arm: Don't allow guest to use unimplemented granule sizes Peter Maydell
` (3 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
From: Jerome Forissier <jerome.forissier@linaro.org>
According to the Linux kernel booting.rst [1], CPTR_EL3.ESM and
SCR_EL3.EnTP2 must be initialized to 1 when EL3 is present and FEAT_SME
is advertised. This has to be taken care of when QEMU boots directly
into the kernel (i.e., "-M virt,secure=on -cpu max -kernel Image").
Cc: qemu-stable@nongnu.org
Fixes: 78cb9776662a ("target/arm: Enable SME for -cpu max")
Link: [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/arm64/booting.rst?h=v6.0#n321
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Message-id: 20221003145641.1921467-1-jerome.forissier@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/arm/boot.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index ada2717f760..ee3858b673a 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -763,6 +763,10 @@ static void do_cpu_reset(void *opaque)
if (cpu_isar_feature(aa64_sve, cpu)) {
env->cp15.cptr_el[3] |= R_CPTR_EL3_EZ_MASK;
}
+ if (cpu_isar_feature(aa64_sme, cpu)) {
+ env->cp15.cptr_el[3] |= R_CPTR_EL3_ESM_MASK;
+ env->cp15.scr_el3 |= SCR_ENTP2;
+ }
/* AArch64 kernels never boot in secure mode */
assert(!info->secure_boot);
/* This hook is only supported for AArch32 currently:
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 26/28] target/arm: Don't allow guest to use unimplemented granule sizes
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (24 preceding siblings ...)
2022-10-10 14:27 ` [PULL 25/28] hw/arm/boot: set CPTR_EL3.ESM and SCR_EL3.EnTP2 when booting Linux with EL3 Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 27/28] target/arm: Use ARMGranuleSize in ARMVAParameters Peter Maydell
` (2 subsequent siblings)
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
Arm CPUs support some subset of the granule (page) sizes 4K, 16K and
64K. The guest selects the one it wants using bits in the TCR_ELx
registers. If it tries to program these registers with a value that
is either reserved or which requests a size that the CPU does not
implement, the architecture requires that the CPU behaves as if the
field was programmed to some size that has been implemented.
Currently we don't implement this, and instead let the guest use any
granule size, even if the CPU ID register fields say it isn't
present.
Make aa64_va_parameters() check against the supported granule size
and force use of a different one if it is not implemented.
(A subsequent commit will make ARMVAParameters use the new enum
rather than the current pair of using16k/using64k bools.)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221003162315.2833797-2-peter.maydell@linaro.org
---
target/arm/cpu.h | 33 +++++++++++++
target/arm/internals.h | 9 ++++
target/arm/helper.c | 102 +++++++++++++++++++++++++++++++++++++----
3 files changed, 136 insertions(+), 8 deletions(-)
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index d541392170e..1a909a1b436 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -4097,6 +4097,39 @@ static inline bool isar_feature_aa64_tgran16_2_lpa2(const ARMISARegisters *id)
return t >= 3 || (t == 0 && isar_feature_aa64_tgran16_lpa2(id));
}
+static inline bool isar_feature_aa64_tgran4(const ARMISARegisters *id)
+{
+ return FIELD_SEX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN4) >= 0;
+}
+
+static inline bool isar_feature_aa64_tgran16(const ARMISARegisters *id)
+{
+ return FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN16) >= 1;
+}
+
+static inline bool isar_feature_aa64_tgran64(const ARMISARegisters *id)
+{
+ return FIELD_SEX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN64) >= 0;
+}
+
+static inline bool isar_feature_aa64_tgran4_2(const ARMISARegisters *id)
+{
+ unsigned t = FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN4_2);
+ return t >= 2 || (t == 0 && isar_feature_aa64_tgran4(id));
+}
+
+static inline bool isar_feature_aa64_tgran16_2(const ARMISARegisters *id)
+{
+ unsigned t = FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN16_2);
+ return t >= 2 || (t == 0 && isar_feature_aa64_tgran16(id));
+}
+
+static inline bool isar_feature_aa64_tgran64_2(const ARMISARegisters *id)
+{
+ unsigned t = FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN64_2);
+ return t >= 2 || (t == 0 && isar_feature_aa64_tgran64(id));
+}
+
static inline bool isar_feature_aa64_ccidx(const ARMISARegisters *id)
{
return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, CCIDX) != 0;
diff --git a/target/arm/internals.h b/target/arm/internals.h
index fd17aee4599..6166ac0a98f 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -998,6 +998,15 @@ static inline uint32_t aarch64_pstate_valid_mask(const ARMISARegisters *id)
return valid;
}
+/* Granule size (i.e. page size) */
+typedef enum ARMGranuleSize {
+ /* Same order as TG0 encoding */
+ Gran4K,
+ Gran64K,
+ Gran16K,
+ GranInvalid,
+} ARMGranuleSize;
+
/*
* Parameters of a given virtual address, as extracted from the
* translation control register (TCR) for a given regime.
diff --git a/target/arm/helper.c b/target/arm/helper.c
index e1338ed6e22..d7f578f2baa 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -10287,20 +10287,105 @@ static int aa64_va_parameter_tcma(uint64_t tcr, ARMMMUIdx mmu_idx)
}
}
+static ARMGranuleSize tg0_to_gran_size(int tg)
+{
+ switch (tg) {
+ case 0:
+ return Gran4K;
+ case 1:
+ return Gran64K;
+ case 2:
+ return Gran16K;
+ default:
+ return GranInvalid;
+ }
+}
+
+static ARMGranuleSize tg1_to_gran_size(int tg)
+{
+ switch (tg) {
+ case 1:
+ return Gran16K;
+ case 2:
+ return Gran4K;
+ case 3:
+ return Gran64K;
+ default:
+ return GranInvalid;
+ }
+}
+
+static inline bool have4k(ARMCPU *cpu, bool stage2)
+{
+ return stage2 ? cpu_isar_feature(aa64_tgran4_2, cpu)
+ : cpu_isar_feature(aa64_tgran4, cpu);
+}
+
+static inline bool have16k(ARMCPU *cpu, bool stage2)
+{
+ return stage2 ? cpu_isar_feature(aa64_tgran16_2, cpu)
+ : cpu_isar_feature(aa64_tgran16, cpu);
+}
+
+static inline bool have64k(ARMCPU *cpu, bool stage2)
+{
+ return stage2 ? cpu_isar_feature(aa64_tgran64_2, cpu)
+ : cpu_isar_feature(aa64_tgran64, cpu);
+}
+
+static ARMGranuleSize sanitize_gran_size(ARMCPU *cpu, ARMGranuleSize gran,
+ bool stage2)
+{
+ switch (gran) {
+ case Gran4K:
+ if (have4k(cpu, stage2)) {
+ return gran;
+ }
+ break;
+ case Gran16K:
+ if (have16k(cpu, stage2)) {
+ return gran;
+ }
+ break;
+ case Gran64K:
+ if (have64k(cpu, stage2)) {
+ return gran;
+ }
+ break;
+ case GranInvalid:
+ break;
+ }
+ /*
+ * If the guest selects a granule size that isn't implemented,
+ * the architecture requires that we behave as if it selected one
+ * that is (with an IMPDEF choice of which one to pick). We choose
+ * to implement the smallest supported granule size.
+ */
+ if (have4k(cpu, stage2)) {
+ return Gran4K;
+ }
+ if (have16k(cpu, stage2)) {
+ return Gran16K;
+ }
+ assert(have64k(cpu, stage2));
+ return Gran64K;
+}
+
ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
ARMMMUIdx mmu_idx, bool data)
{
uint64_t tcr = regime_tcr(env, mmu_idx);
bool epd, hpd, using16k, using64k, tsz_oob, ds;
int select, tsz, tbi, max_tsz, min_tsz, ps, sh;
+ ARMGranuleSize gran;
ARMCPU *cpu = env_archcpu(env);
+ bool stage2 = mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S;
if (!regime_has_2_ranges(mmu_idx)) {
select = 0;
tsz = extract32(tcr, 0, 6);
- using64k = extract32(tcr, 14, 1);
- using16k = extract32(tcr, 15, 1);
- if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {
+ gran = tg0_to_gran_size(extract32(tcr, 14, 2));
+ if (stage2) {
/* VTCR_EL2 */
hpd = false;
} else {
@@ -10318,16 +10403,13 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
select = extract64(va, 55, 1);
if (!select) {
tsz = extract32(tcr, 0, 6);
+ gran = tg0_to_gran_size(extract32(tcr, 14, 2));
epd = extract32(tcr, 7, 1);
sh = extract32(tcr, 12, 2);
- using64k = extract32(tcr, 14, 1);
- using16k = extract32(tcr, 15, 1);
hpd = extract64(tcr, 41, 1);
} else {
- int tg = extract32(tcr, 30, 2);
- using16k = tg == 1;
- using64k = tg == 3;
tsz = extract32(tcr, 16, 6);
+ gran = tg1_to_gran_size(extract32(tcr, 30, 2));
epd = extract32(tcr, 23, 1);
sh = extract32(tcr, 28, 2);
hpd = extract64(tcr, 42, 1);
@@ -10336,6 +10418,10 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
ds = extract64(tcr, 59, 1);
}
+ gran = sanitize_gran_size(cpu, gran, stage2);
+ using64k = gran == Gran64K;
+ using16k = gran == Gran16K;
+
if (cpu_isar_feature(aa64_st, cpu)) {
max_tsz = 48 - using64k;
} else {
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 27/28] target/arm: Use ARMGranuleSize in ARMVAParameters
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (25 preceding siblings ...)
2022-10-10 14:27 ` [PULL 26/28] target/arm: Don't allow guest to use unimplemented granule sizes Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-10 14:27 ` [PULL 28/28] docs/system/arm/emulation.rst: Report FEAT_GTG support Peter Maydell
2022-10-12 21:25 ` [PULL 00/28] target-arm queue Stefan Hajnoczi
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
Now we have an enum for the granule size, use it in the
ARMVAParameters struct instead of the using16k/using64k bools.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221003162315.2833797-3-peter.maydell@linaro.org
---
target/arm/internals.h | 23 +++++++++++++++++++++--
target/arm/helper.c | 39 ++++++++++++++++++++++++++++-----------
target/arm/ptw.c | 8 +-------
3 files changed, 50 insertions(+), 20 deletions(-)
diff --git a/target/arm/internals.h b/target/arm/internals.h
index 6166ac0a98f..9566364dcae 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -1007,6 +1007,26 @@ typedef enum ARMGranuleSize {
GranInvalid,
} ARMGranuleSize;
+/**
+ * arm_granule_bits: Return address size of the granule in bits
+ *
+ * Return the address size of the granule in bits. This corresponds
+ * to the pseudocode TGxGranuleBits().
+ */
+static inline int arm_granule_bits(ARMGranuleSize gran)
+{
+ switch (gran) {
+ case Gran64K:
+ return 16;
+ case Gran16K:
+ return 14;
+ case Gran4K:
+ return 12;
+ default:
+ g_assert_not_reached();
+ }
+}
+
/*
* Parameters of a given virtual address, as extracted from the
* translation control register (TCR) for a given regime.
@@ -1019,10 +1039,9 @@ typedef struct ARMVAParameters {
bool tbi : 1;
bool epd : 1;
bool hpd : 1;
- bool using16k : 1;
- bool using64k : 1;
bool tsz_oob : 1; /* tsz has been clamped to legal range */
bool ds : 1;
+ ARMGranuleSize gran : 2;
} ARMVAParameters;
ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
diff --git a/target/arm/helper.c b/target/arm/helper.c
index d7f578f2baa..dde64a487ae 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -4473,6 +4473,24 @@ typedef struct {
uint64_t length;
} TLBIRange;
+static ARMGranuleSize tlbi_range_tg_to_gran_size(int tg)
+{
+ /*
+ * Note that the TLBI range TG field encoding differs from both
+ * TG0 and TG1 encodings.
+ */
+ switch (tg) {
+ case 1:
+ return Gran4K;
+ case 2:
+ return Gran16K;
+ case 3:
+ return Gran64K;
+ default:
+ return GranInvalid;
+ }
+}
+
static TLBIRange tlbi_aa64_get_range(CPUARMState *env, ARMMMUIdx mmuidx,
uint64_t value)
{
@@ -4481,17 +4499,19 @@ static TLBIRange tlbi_aa64_get_range(CPUARMState *env, ARMMMUIdx mmuidx,
uint64_t select = sextract64(value, 36, 1);
ARMVAParameters param = aa64_va_parameters(env, select, mmuidx, true);
TLBIRange ret = { };
+ ARMGranuleSize gran;
page_size_granule = extract64(value, 46, 2);
+ gran = tlbi_range_tg_to_gran_size(page_size_granule);
/* The granule encoded in value must match the granule in use. */
- if (page_size_granule != (param.using64k ? 3 : param.using16k ? 2 : 1)) {
+ if (gran != param.gran) {
qemu_log_mask(LOG_GUEST_ERROR, "Invalid tlbi page size granule %d\n",
page_size_granule);
return ret;
}
- page_shift = (page_size_granule - 1) * 2 + 12;
+ page_shift = arm_granule_bits(gran);
num = extract64(value, 39, 5);
scale = extract64(value, 44, 2);
exponent = (5 * scale) + 1;
@@ -10375,7 +10395,7 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
ARMMMUIdx mmu_idx, bool data)
{
uint64_t tcr = regime_tcr(env, mmu_idx);
- bool epd, hpd, using16k, using64k, tsz_oob, ds;
+ bool epd, hpd, tsz_oob, ds;
int select, tsz, tbi, max_tsz, min_tsz, ps, sh;
ARMGranuleSize gran;
ARMCPU *cpu = env_archcpu(env);
@@ -10419,11 +10439,9 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
}
gran = sanitize_gran_size(cpu, gran, stage2);
- using64k = gran == Gran64K;
- using16k = gran == Gran16K;
if (cpu_isar_feature(aa64_st, cpu)) {
- max_tsz = 48 - using64k;
+ max_tsz = 48 - (gran == Gran64K);
} else {
max_tsz = 39;
}
@@ -10433,7 +10451,7 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
* adjust the effective value of DS, as documented.
*/
min_tsz = 16;
- if (using64k) {
+ if (gran == Gran64K) {
if (cpu_isar_feature(aa64_lva, cpu)) {
min_tsz = 12;
}
@@ -10442,14 +10460,14 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
switch (mmu_idx) {
case ARMMMUIdx_Stage2:
case ARMMMUIdx_Stage2_S:
- if (using16k) {
+ if (gran == Gran16K) {
ds = cpu_isar_feature(aa64_tgran16_2_lpa2, cpu);
} else {
ds = cpu_isar_feature(aa64_tgran4_2_lpa2, cpu);
}
break;
default:
- if (using16k) {
+ if (gran == Gran16K) {
ds = cpu_isar_feature(aa64_tgran16_lpa2, cpu);
} else {
ds = cpu_isar_feature(aa64_tgran4_lpa2, cpu);
@@ -10486,10 +10504,9 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va,
.tbi = tbi,
.epd = epd,
.hpd = hpd,
- .using16k = using16k,
- .using64k = using64k,
.tsz_oob = tsz_oob,
.ds = ds,
+ .gran = gran,
};
}
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index ddacffa7ee6..23f16f4ff7f 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -1062,13 +1062,7 @@ static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
}
}
- if (param.using64k) {
- stride = 13;
- } else if (param.using16k) {
- stride = 11;
- } else {
- stride = 9;
- }
+ stride = arm_granule_bits(param.gran) - 3;
/*
* Note that QEMU ignores shareability and cacheability attributes,
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* [PULL 28/28] docs/system/arm/emulation.rst: Report FEAT_GTG support
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (26 preceding siblings ...)
2022-10-10 14:27 ` [PULL 27/28] target/arm: Use ARMGranuleSize in ARMVAParameters Peter Maydell
@ 2022-10-10 14:27 ` Peter Maydell
2022-10-12 21:25 ` [PULL 00/28] target-arm queue Stefan Hajnoczi
28 siblings, 0 replies; 35+ messages in thread
From: Peter Maydell @ 2022-10-10 14:27 UTC (permalink / raw)
To: qemu-devel
FEAT_GTG is a change tho the ID register ID_AA64MMFR0_EL1 so that it
can report a different set of supported granule (page) sizes for
stage 1 and stage 2 translation tables. As of commit c20281b2a5048
we already report the granule sizes that way for '-cpu max', and now
we also correctly make attempts to use unimplemented granule sizes
fail, so we can report the support of the feature in the
documentation.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221003162315.2833797-4-peter.maydell@linaro.org
---
docs/system/arm/emulation.rst | 1 +
1 file changed, 1 insertion(+)
diff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst
index be7bbffe595..cfb4b0768b0 100644
--- a/docs/system/arm/emulation.rst
+++ b/docs/system/arm/emulation.rst
@@ -31,6 +31,7 @@ the following architecture extensions:
- FEAT_FRINTTS (Floating-point to integer instructions)
- FEAT_FlagM (Flag manipulation instructions v2)
- FEAT_FlagM2 (Enhancements to flag manipulation instructions)
+- FEAT_GTG (Guest translation granule size)
- FEAT_HCX (Support for the HCRX_EL2 register)
- FEAT_HPDS (Hierarchical permission disables)
- FEAT_I8MM (AArch64 Int8 matrix multiplication instructions)
--
2.25.1
^ permalink raw reply related [flat|nested] 35+ messages in thread* Re: [PULL 00/28] target-arm queue
2022-10-10 14:27 [PULL 00/28] target-arm queue Peter Maydell
` (27 preceding siblings ...)
2022-10-10 14:27 ` [PULL 28/28] docs/system/arm/emulation.rst: Report FEAT_GTG support Peter Maydell
@ 2022-10-12 21:25 ` Stefan Hajnoczi
28 siblings, 0 replies; 35+ messages in thread
From: Stefan Hajnoczi @ 2022-10-12 21:25 UTC (permalink / raw)
To: Peter Maydell; +Cc: qemu-devel
[-- Attachment #1: Type: text/plain, Size: 115 bytes --]
Applied, thanks.
Please update the changelog at https://wiki.qemu.org/ChangeLog/7.2 for any user-visible changes.
[-- Attachment #2: signature.asc --]
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^ permalink raw reply [flat|nested] 35+ messages in thread