From: Nikolas Wipper <nikwip@amazon.de>
To: kvm-riscv@lists.infradead.org
Subject: [PATCH 09/15] KVM: x86/mmu: Introduce status parameter to page walker
Date: Tue, 10 Sep 2024 15:22:01 +0000 [thread overview]
Message-ID: <20240910152207.38974-10-nikwip@amazon.de> (raw)
In-Reply-To: <20240910152207.38974-1-nikwip@amazon.de>
Introduce the status parameter to walk_addr_generic() which is used in
later patches to provide the caller with information on whether setting
the accessed/dirty bits succeeded.
No functional change intended.
Signed-off-by: Nikolas Wipper <nikwip@amazon.de>
---
arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/kvm/hyperv.c | 2 +-
arch/x86/kvm/mmu.h | 8 +++++---
arch/x86/kvm/mmu/mmu.c | 5 +++--
arch/x86/kvm/mmu/paging_tmpl.h | 26 ++++++++++++++++----------
arch/x86/kvm/x86.c | 25 ++++++++++++++-----------
6 files changed, 40 insertions(+), 28 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index cd2c391d6a24..1c5aaf55c683 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -460,7 +460,7 @@ struct kvm_mmu {
struct x86_exception *fault);
gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
gpa_t gva_or_gpa, u64 access, u64 flags,
- struct x86_exception *exception);
+ struct x86_exception *exception, u16 *status);
int (*sync_spte)(struct kvm_vcpu *vcpu,
struct kvm_mmu_page *sp, int i);
struct kvm_mmu_root_info root;
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index b237231ace61..30d5b86bc306 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -2037,7 +2037,7 @@ static u64 kvm_hv_flush_tlb(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc)
*/
if (!hc->fast && is_guest_mode(vcpu)) {
hc->ingpa = translate_nested_gpa(vcpu, hc->ingpa, 0,
- PWALK_SET_ALL, NULL);
+ PWALK_SET_ALL, NULL, NULL);
if (unlikely(hc->ingpa == INVALID_GPA))
return HV_STATUS_INVALID_HYPERCALL_INPUT;
}
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index 35030f6466b5..272ce93f855f 100644
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -275,15 +275,17 @@ static inline void kvm_update_page_stats(struct kvm *kvm, int level, int count)
}
gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u64 access,
- u64 flags, struct x86_exception *exception);
+ u64 flags, struct x86_exception *exception,
+ u16 *status);
static inline gpa_t kvm_translate_gpa(struct kvm_vcpu *vcpu,
struct kvm_mmu *mmu,
gpa_t gpa, u64 access, u64 flags,
- struct x86_exception *exception)
+ struct x86_exception *exception,
+ u16 *status)
{
if (mmu != &vcpu->arch.nested_mmu)
return gpa;
- return translate_nested_gpa(vcpu, gpa, access, flags, exception);
+ return translate_nested_gpa(vcpu, gpa, access, flags, exception, status);
}
#endif
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 50c635142bf7..2ab0437edf54 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4103,11 +4103,12 @@ void kvm_mmu_sync_prev_roots(struct kvm_vcpu *vcpu)
static gpa_t nonpaging_gva_to_gpa(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
gpa_t vaddr, u64 access, u64 flags,
- struct x86_exception *exception)
+ struct x86_exception *exception, u16 *status)
{
if (exception)
exception->error_code = 0;
- return kvm_translate_gpa(vcpu, mmu, vaddr, access, flags, exception);
+ return kvm_translate_gpa(vcpu, mmu, vaddr, access, flags, exception,
+ status);
}
static bool mmio_info_in_cache(struct kvm_vcpu *vcpu, u64 addr, bool direct)
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 2cc40fd17f53..985a19dda603 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -197,7 +197,8 @@ static inline unsigned FNAME(gpte_access)(u64 gpte)
static int FNAME(update_accessed_dirty_bits)(struct kvm_vcpu *vcpu,
struct kvm_mmu *mmu,
struct guest_walker *walker,
- gpa_t addr, int write_fault)
+ gpa_t addr, int write_fault,
+ u16 *status)
{
unsigned level, index;
pt_element_t pte, orig_pte;
@@ -301,7 +302,8 @@ static inline bool FNAME(is_last_gpte)(struct kvm_mmu *mmu,
*/
static int FNAME(walk_addr_generic)(struct guest_walker *walker,
struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
- gpa_t addr, u64 access, u64 flags)
+ gpa_t addr, u64 access, u64 flags,
+ u16 *status)
{
int ret;
pt_element_t pte;
@@ -344,6 +346,9 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
walker->fault.flags = 0;
+ if (status)
+ *status = 0;
+
/*
* FIXME: on Intel processors, loads of the PDPTE registers for PAE paging
* by the MOV to CR instruction are treated as reads and do not cause the
@@ -383,7 +388,7 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
real_gpa = kvm_translate_gpa(vcpu, mmu, gfn_to_gpa(table_gfn),
nested_access, flags,
- &walker->fault);
+ &walker->fault, status);
/*
* FIXME: This can happen if emulation (for of an INS/OUTS
@@ -453,8 +458,8 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
gfn += pse36_gfn_delta(pte);
#endif
- real_gpa = kvm_translate_gpa(vcpu, mmu, gfn_to_gpa(gfn), access,
- flags, &walker->fault);
+ real_gpa = kvm_translate_gpa(vcpu, mmu, gfn_to_gpa(gfn), access, flags,
+ &walker->fault, status);
if (real_gpa == INVALID_GPA)
goto late_exit;
@@ -473,7 +478,8 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
if (unlikely(set_accessed && !accessed_dirty)) {
ret = FNAME(update_accessed_dirty_bits)(vcpu, mmu, walker, addr,
- write_fault && set_dirty);
+ write_fault && set_dirty,
+ status);
if (unlikely(ret < 0))
goto error;
else if (ret)
@@ -538,7 +544,7 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
*/
++walker->level;
FNAME(update_accessed_dirty_bits)(vcpu, mmu, walker, addr,
- false);
+ false, status);
--walker->level;
}
return 0;
@@ -548,7 +554,7 @@ static int FNAME(walk_addr)(struct guest_walker *walker, struct kvm_vcpu *vcpu,
gpa_t addr, u64 access, u64 flags)
{
return FNAME(walk_addr_generic)(walker, vcpu, vcpu->arch.mmu, addr,
- access, flags);
+ access, flags, NULL);
}
static bool
@@ -891,7 +897,7 @@ static gpa_t FNAME(get_level1_sp_gpa)(struct kvm_mmu_page *sp)
/* Note, @addr is a GPA when gva_to_gpa() translates an L2 GPA to an L1 GPA. */
static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
gpa_t addr, u64 access, u64 flags,
- struct x86_exception *exception)
+ struct x86_exception *exception, u16 *status)
{
struct guest_walker walker;
gpa_t gpa = INVALID_GPA;
@@ -902,7 +908,7 @@ static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
WARN_ON_ONCE((addr >> 32) && mmu == vcpu->arch.walk_mmu);
#endif
- r = FNAME(walk_addr_generic)(&walker, vcpu, mmu, addr, access, flags);
+ r = FNAME(walk_addr_generic)(&walker, vcpu, mmu, addr, access, flags, status);
if (r) {
gpa = gfn_to_gpa(walker.gfn);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 32e81cd502ee..be696b60aba6 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1068,7 +1068,7 @@ int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3)
*/
real_gpa = kvm_translate_gpa(vcpu, mmu, gfn_to_gpa(pdpt_gfn),
PFERR_USER_MASK | PFERR_WRITE_MASK,
- PWALK_SET_ALL, NULL);
+ PWALK_SET_ALL, NULL, NULL);
if (real_gpa == INVALID_GPA)
return 0;
@@ -7561,7 +7561,8 @@ void kvm_get_segment(struct kvm_vcpu *vcpu,
}
gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u64 access,
- u64 flags, struct x86_exception *exception)
+ u64 flags, struct x86_exception *exception,
+ u16 *status)
{
struct kvm_mmu *mmu = vcpu->arch.mmu;
gpa_t t_gpa;
@@ -7570,7 +7571,8 @@ gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u64 access,
/* NPT walks are always user-walks */
access |= PFERR_USER_MASK;
- t_gpa = mmu->gva_to_gpa(vcpu, mmu, gpa, access, flags, exception);
+ t_gpa = mmu->gva_to_gpa(vcpu, mmu, gpa, access, flags, exception,
+ status);
return t_gpa;
}
@@ -7582,7 +7584,7 @@ gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
u64 access = (kvm_x86_call(get_cpl)(vcpu) == 3) ? PFERR_USER_MASK : 0;
return mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL,
- exception);
+ exception, NULL);
}
EXPORT_SYMBOL_GPL(kvm_mmu_gva_to_gpa_read);
@@ -7594,7 +7596,7 @@ gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
u64 access = (kvm_x86_call(get_cpl)(vcpu) == 3) ? PFERR_USER_MASK : 0;
access |= PFERR_WRITE_MASK;
return mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL,
- exception);
+ exception, NULL);
}
EXPORT_SYMBOL_GPL(kvm_mmu_gva_to_gpa_write);
@@ -7604,7 +7606,7 @@ gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
{
struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
- return mmu->gva_to_gpa(vcpu, mmu, gva, 0, PWALK_SET_ALL, exception);
+ return mmu->gva_to_gpa(vcpu, mmu, gva, 0, PWALK_SET_ALL, exception, NULL);
}
static int kvm_read_guest_virt_helper(gva_t addr, void *val, unsigned int bytes,
@@ -7617,7 +7619,7 @@ static int kvm_read_guest_virt_helper(gva_t addr, void *val, unsigned int bytes,
while (bytes) {
gpa_t gpa = mmu->gva_to_gpa(vcpu, mmu, addr, access,
- PWALK_SET_ALL, exception);
+ PWALK_SET_ALL, exception, NULL);
unsigned offset = addr & (PAGE_SIZE-1);
unsigned toread = min(bytes, (unsigned)PAGE_SIZE - offset);
int ret;
@@ -7652,7 +7654,8 @@ static int kvm_fetch_guest_virt(struct x86_emulate_ctxt *ctxt,
/* Inline kvm_read_guest_virt_helper for speed. */
gpa_t gpa = mmu->gva_to_gpa(vcpu, mmu, addr, access | PFERR_FETCH_MASK,
- PWALK_SET_ALL, exception);
+ PWALK_SET_ALL,
+ exception, NULL);
if (unlikely(gpa == INVALID_GPA))
return X86EMUL_PROPAGATE_FAULT;
@@ -7710,7 +7713,7 @@ static int kvm_write_guest_virt_helper(gva_t addr, void *val, unsigned int bytes
while (bytes) {
gpa_t gpa = mmu->gva_to_gpa(vcpu, mmu, addr, access,
- PWALK_SET_ALL, exception);
+ PWALK_SET_ALL, exception, NULL);
unsigned offset = addr & (PAGE_SIZE-1);
unsigned towrite = min(bytes, (unsigned)PAGE_SIZE - offset);
int ret;
@@ -7830,7 +7833,7 @@ static int vcpu_mmio_gva_to_gpa(struct kvm_vcpu *vcpu, unsigned long gva,
return 1;
}
- *gpa = mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL, exception);
+ *gpa = mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL, exception, NULL);
if (*gpa == INVALID_GPA)
return -1;
@@ -13651,7 +13654,7 @@ void kvm_fixup_and_inject_pf_error(struct kvm_vcpu *vcpu, gva_t gva, u16 error_c
if (!(error_code & PFERR_PRESENT_MASK) ||
mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL,
- &fault) != INVALID_GPA) {
+ &fault, NULL) != INVALID_GPA) {
/*
* If vcpu->arch.walk_mmu->gva_to_gpa succeeded, the page
* tables probably do not match the TLB. Just proceed
--
2.40.1
Amazon Web Services Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss
Eingetragen am Amtsgericht Charlottenburg unter HRB 257764 B
Sitz: Berlin
Ust-ID: DE 365 538 597
WARNING: multiple messages have this Message-ID (diff)
From: Nikolas Wipper <nikwip@amazon.de>
To: Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Nicolas Saenz Julienne <nsaenz@amazon.com>,
Alexander Graf <graf@amazon.de>,
James Gowans <jgowans@amazon.com>, <nh-open-source@amazon.com>,
Thomas Gleixner <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
<linux-kernel@vger.kernel.org>, <kvm@vger.kernel.org>,
<x86@kernel.org>, <linux-doc@vger.kernel.org>,
<linux-kselftest@vger.kernel.org>, <kvmarm@lists.linux.dev>,
<kvm-riscv@lists.infradead.org>,
Nikolas Wipper <nikwip@amazon.de>
Subject: [PATCH 09/15] KVM: x86/mmu: Introduce status parameter to page walker
Date: Tue, 10 Sep 2024 15:22:01 +0000 [thread overview]
Message-ID: <20240910152207.38974-10-nikwip@amazon.de> (raw)
In-Reply-To: <20240910152207.38974-1-nikwip@amazon.de>
Introduce the status parameter to walk_addr_generic() which is used in
later patches to provide the caller with information on whether setting
the accessed/dirty bits succeeded.
No functional change intended.
Signed-off-by: Nikolas Wipper <nikwip@amazon.de>
---
arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/kvm/hyperv.c | 2 +-
arch/x86/kvm/mmu.h | 8 +++++---
arch/x86/kvm/mmu/mmu.c | 5 +++--
arch/x86/kvm/mmu/paging_tmpl.h | 26 ++++++++++++++++----------
arch/x86/kvm/x86.c | 25 ++++++++++++++-----------
6 files changed, 40 insertions(+), 28 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index cd2c391d6a24..1c5aaf55c683 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -460,7 +460,7 @@ struct kvm_mmu {
struct x86_exception *fault);
gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
gpa_t gva_or_gpa, u64 access, u64 flags,
- struct x86_exception *exception);
+ struct x86_exception *exception, u16 *status);
int (*sync_spte)(struct kvm_vcpu *vcpu,
struct kvm_mmu_page *sp, int i);
struct kvm_mmu_root_info root;
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index b237231ace61..30d5b86bc306 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -2037,7 +2037,7 @@ static u64 kvm_hv_flush_tlb(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc)
*/
if (!hc->fast && is_guest_mode(vcpu)) {
hc->ingpa = translate_nested_gpa(vcpu, hc->ingpa, 0,
- PWALK_SET_ALL, NULL);
+ PWALK_SET_ALL, NULL, NULL);
if (unlikely(hc->ingpa == INVALID_GPA))
return HV_STATUS_INVALID_HYPERCALL_INPUT;
}
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index 35030f6466b5..272ce93f855f 100644
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -275,15 +275,17 @@ static inline void kvm_update_page_stats(struct kvm *kvm, int level, int count)
}
gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u64 access,
- u64 flags, struct x86_exception *exception);
+ u64 flags, struct x86_exception *exception,
+ u16 *status);
static inline gpa_t kvm_translate_gpa(struct kvm_vcpu *vcpu,
struct kvm_mmu *mmu,
gpa_t gpa, u64 access, u64 flags,
- struct x86_exception *exception)
+ struct x86_exception *exception,
+ u16 *status)
{
if (mmu != &vcpu->arch.nested_mmu)
return gpa;
- return translate_nested_gpa(vcpu, gpa, access, flags, exception);
+ return translate_nested_gpa(vcpu, gpa, access, flags, exception, status);
}
#endif
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 50c635142bf7..2ab0437edf54 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4103,11 +4103,12 @@ void kvm_mmu_sync_prev_roots(struct kvm_vcpu *vcpu)
static gpa_t nonpaging_gva_to_gpa(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
gpa_t vaddr, u64 access, u64 flags,
- struct x86_exception *exception)
+ struct x86_exception *exception, u16 *status)
{
if (exception)
exception->error_code = 0;
- return kvm_translate_gpa(vcpu, mmu, vaddr, access, flags, exception);
+ return kvm_translate_gpa(vcpu, mmu, vaddr, access, flags, exception,
+ status);
}
static bool mmio_info_in_cache(struct kvm_vcpu *vcpu, u64 addr, bool direct)
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 2cc40fd17f53..985a19dda603 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -197,7 +197,8 @@ static inline unsigned FNAME(gpte_access)(u64 gpte)
static int FNAME(update_accessed_dirty_bits)(struct kvm_vcpu *vcpu,
struct kvm_mmu *mmu,
struct guest_walker *walker,
- gpa_t addr, int write_fault)
+ gpa_t addr, int write_fault,
+ u16 *status)
{
unsigned level, index;
pt_element_t pte, orig_pte;
@@ -301,7 +302,8 @@ static inline bool FNAME(is_last_gpte)(struct kvm_mmu *mmu,
*/
static int FNAME(walk_addr_generic)(struct guest_walker *walker,
struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
- gpa_t addr, u64 access, u64 flags)
+ gpa_t addr, u64 access, u64 flags,
+ u16 *status)
{
int ret;
pt_element_t pte;
@@ -344,6 +346,9 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
walker->fault.flags = 0;
+ if (status)
+ *status = 0;
+
/*
* FIXME: on Intel processors, loads of the PDPTE registers for PAE paging
* by the MOV to CR instruction are treated as reads and do not cause the
@@ -383,7 +388,7 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
real_gpa = kvm_translate_gpa(vcpu, mmu, gfn_to_gpa(table_gfn),
nested_access, flags,
- &walker->fault);
+ &walker->fault, status);
/*
* FIXME: This can happen if emulation (for of an INS/OUTS
@@ -453,8 +458,8 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
gfn += pse36_gfn_delta(pte);
#endif
- real_gpa = kvm_translate_gpa(vcpu, mmu, gfn_to_gpa(gfn), access,
- flags, &walker->fault);
+ real_gpa = kvm_translate_gpa(vcpu, mmu, gfn_to_gpa(gfn), access, flags,
+ &walker->fault, status);
if (real_gpa == INVALID_GPA)
goto late_exit;
@@ -473,7 +478,8 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
if (unlikely(set_accessed && !accessed_dirty)) {
ret = FNAME(update_accessed_dirty_bits)(vcpu, mmu, walker, addr,
- write_fault && set_dirty);
+ write_fault && set_dirty,
+ status);
if (unlikely(ret < 0))
goto error;
else if (ret)
@@ -538,7 +544,7 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
*/
++walker->level;
FNAME(update_accessed_dirty_bits)(vcpu, mmu, walker, addr,
- false);
+ false, status);
--walker->level;
}
return 0;
@@ -548,7 +554,7 @@ static int FNAME(walk_addr)(struct guest_walker *walker, struct kvm_vcpu *vcpu,
gpa_t addr, u64 access, u64 flags)
{
return FNAME(walk_addr_generic)(walker, vcpu, vcpu->arch.mmu, addr,
- access, flags);
+ access, flags, NULL);
}
static bool
@@ -891,7 +897,7 @@ static gpa_t FNAME(get_level1_sp_gpa)(struct kvm_mmu_page *sp)
/* Note, @addr is a GPA when gva_to_gpa() translates an L2 GPA to an L1 GPA. */
static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
gpa_t addr, u64 access, u64 flags,
- struct x86_exception *exception)
+ struct x86_exception *exception, u16 *status)
{
struct guest_walker walker;
gpa_t gpa = INVALID_GPA;
@@ -902,7 +908,7 @@ static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
WARN_ON_ONCE((addr >> 32) && mmu == vcpu->arch.walk_mmu);
#endif
- r = FNAME(walk_addr_generic)(&walker, vcpu, mmu, addr, access, flags);
+ r = FNAME(walk_addr_generic)(&walker, vcpu, mmu, addr, access, flags, status);
if (r) {
gpa = gfn_to_gpa(walker.gfn);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 32e81cd502ee..be696b60aba6 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1068,7 +1068,7 @@ int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3)
*/
real_gpa = kvm_translate_gpa(vcpu, mmu, gfn_to_gpa(pdpt_gfn),
PFERR_USER_MASK | PFERR_WRITE_MASK,
- PWALK_SET_ALL, NULL);
+ PWALK_SET_ALL, NULL, NULL);
if (real_gpa == INVALID_GPA)
return 0;
@@ -7561,7 +7561,8 @@ void kvm_get_segment(struct kvm_vcpu *vcpu,
}
gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u64 access,
- u64 flags, struct x86_exception *exception)
+ u64 flags, struct x86_exception *exception,
+ u16 *status)
{
struct kvm_mmu *mmu = vcpu->arch.mmu;
gpa_t t_gpa;
@@ -7570,7 +7571,8 @@ gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u64 access,
/* NPT walks are always user-walks */
access |= PFERR_USER_MASK;
- t_gpa = mmu->gva_to_gpa(vcpu, mmu, gpa, access, flags, exception);
+ t_gpa = mmu->gva_to_gpa(vcpu, mmu, gpa, access, flags, exception,
+ status);
return t_gpa;
}
@@ -7582,7 +7584,7 @@ gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
u64 access = (kvm_x86_call(get_cpl)(vcpu) == 3) ? PFERR_USER_MASK : 0;
return mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL,
- exception);
+ exception, NULL);
}
EXPORT_SYMBOL_GPL(kvm_mmu_gva_to_gpa_read);
@@ -7594,7 +7596,7 @@ gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
u64 access = (kvm_x86_call(get_cpl)(vcpu) == 3) ? PFERR_USER_MASK : 0;
access |= PFERR_WRITE_MASK;
return mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL,
- exception);
+ exception, NULL);
}
EXPORT_SYMBOL_GPL(kvm_mmu_gva_to_gpa_write);
@@ -7604,7 +7606,7 @@ gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
{
struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
- return mmu->gva_to_gpa(vcpu, mmu, gva, 0, PWALK_SET_ALL, exception);
+ return mmu->gva_to_gpa(vcpu, mmu, gva, 0, PWALK_SET_ALL, exception, NULL);
}
static int kvm_read_guest_virt_helper(gva_t addr, void *val, unsigned int bytes,
@@ -7617,7 +7619,7 @@ static int kvm_read_guest_virt_helper(gva_t addr, void *val, unsigned int bytes,
while (bytes) {
gpa_t gpa = mmu->gva_to_gpa(vcpu, mmu, addr, access,
- PWALK_SET_ALL, exception);
+ PWALK_SET_ALL, exception, NULL);
unsigned offset = addr & (PAGE_SIZE-1);
unsigned toread = min(bytes, (unsigned)PAGE_SIZE - offset);
int ret;
@@ -7652,7 +7654,8 @@ static int kvm_fetch_guest_virt(struct x86_emulate_ctxt *ctxt,
/* Inline kvm_read_guest_virt_helper for speed. */
gpa_t gpa = mmu->gva_to_gpa(vcpu, mmu, addr, access | PFERR_FETCH_MASK,
- PWALK_SET_ALL, exception);
+ PWALK_SET_ALL,
+ exception, NULL);
if (unlikely(gpa == INVALID_GPA))
return X86EMUL_PROPAGATE_FAULT;
@@ -7710,7 +7713,7 @@ static int kvm_write_guest_virt_helper(gva_t addr, void *val, unsigned int bytes
while (bytes) {
gpa_t gpa = mmu->gva_to_gpa(vcpu, mmu, addr, access,
- PWALK_SET_ALL, exception);
+ PWALK_SET_ALL, exception, NULL);
unsigned offset = addr & (PAGE_SIZE-1);
unsigned towrite = min(bytes, (unsigned)PAGE_SIZE - offset);
int ret;
@@ -7830,7 +7833,7 @@ static int vcpu_mmio_gva_to_gpa(struct kvm_vcpu *vcpu, unsigned long gva,
return 1;
}
- *gpa = mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL, exception);
+ *gpa = mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL, exception, NULL);
if (*gpa == INVALID_GPA)
return -1;
@@ -13651,7 +13654,7 @@ void kvm_fixup_and_inject_pf_error(struct kvm_vcpu *vcpu, gva_t gva, u16 error_c
if (!(error_code & PFERR_PRESENT_MASK) ||
mmu->gva_to_gpa(vcpu, mmu, gva, access, PWALK_SET_ALL,
- &fault) != INVALID_GPA) {
+ &fault, NULL) != INVALID_GPA) {
/*
* If vcpu->arch.walk_mmu->gva_to_gpa succeeded, the page
* tables probably do not match the TLB. Just proceed
--
2.40.1
Amazon Web Services Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss
Eingetragen am Amtsgericht Charlottenburg unter HRB 257764 B
Sitz: Berlin
Ust-ID: DE 365 538 597
next prev parent reply other threads:[~2024-09-10 15:22 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-10 15:21 [PATCH 00/15] KVM: x86: Introduce new ioctl KVM_TRANSLATE2 Nikolas Wipper
2024-09-10 15:21 ` Nikolas Wipper
2024-09-10 15:21 ` [PATCH 01/15] KVM: Add API documentation for KVM_TRANSLATE2 Nikolas Wipper
2024-09-10 15:21 ` Nikolas Wipper
2024-09-10 15:21 ` [PATCH 02/15] KVM: x86/mmu: Abort page walk if permission checks fail Nikolas Wipper
2024-09-10 15:21 ` Nikolas Wipper
2024-09-10 15:21 ` [PATCH 03/15] KVM: x86/mmu: Introduce exception flag for unmapped GPAs Nikolas Wipper
2024-09-10 15:21 ` Nikolas Wipper
2024-09-10 15:21 ` [PATCH 04/15] KVM: x86/mmu: Store GPA in exception if applicable Nikolas Wipper
2024-09-10 15:21 ` Nikolas Wipper
2024-09-10 15:21 ` [PATCH 05/15] KVM: x86/mmu: Introduce flags parameter to page walker Nikolas Wipper
2024-09-10 15:21 ` Nikolas Wipper
2024-09-10 15:21 ` [PATCH 06/15] KVM: x86/mmu: Implement PWALK_SET_ACCESSED in " Nikolas Wipper
2024-09-10 15:21 ` Nikolas Wipper
2024-09-10 15:21 ` [PATCH 07/15] KVM: x86/mmu: Implement PWALK_SET_DIRTY " Nikolas Wipper
2024-09-10 15:21 ` Nikolas Wipper
2024-09-10 15:22 ` [PATCH 08/15] KVM: x86/mmu: Implement PWALK_FORCE_SET_ACCESSED " Nikolas Wipper
2024-09-10 15:22 ` Nikolas Wipper
2024-09-10 15:22 ` Nikolas Wipper [this message]
2024-09-10 15:22 ` [PATCH 09/15] KVM: x86/mmu: Introduce status parameter to " Nikolas Wipper
2024-09-10 15:22 ` [PATCH 10/15] KVM: x86/mmu: Implement PWALK_STATUS_READ_ONLY_PTE_GPA in " Nikolas Wipper
2024-09-10 15:22 ` Nikolas Wipper
2024-09-10 15:22 ` [PATCH 11/15] KVM: x86: Introduce generic gva to gpa translation function Nikolas Wipper
2024-09-10 15:22 ` Nikolas Wipper
2024-09-10 15:22 ` [PATCH 12/15] KVM: Introduce KVM_TRANSLATE2 Nikolas Wipper
2024-09-10 15:22 ` Nikolas Wipper
2024-09-10 15:22 ` [PATCH 13/15] KVM: Add KVM_TRANSLATE2 stub Nikolas Wipper
2024-09-10 15:22 ` Nikolas Wipper
2024-09-10 15:22 ` [PATCH 14/15] KVM: x86: Implement KVM_TRANSLATE2 Nikolas Wipper
2024-09-10 15:22 ` Nikolas Wipper
2024-12-11 22:06 ` Sean Christopherson
2024-12-11 22:06 ` Sean Christopherson
2024-09-10 15:22 ` [PATCH 15/15] KVM: selftests: Add test for KVM_TRANSLATE2 Nikolas Wipper
2024-09-10 15:22 ` Nikolas Wipper
2024-10-04 10:44 ` [PATCH 00/15] KVM: x86: Introduce new ioctl KVM_TRANSLATE2 Nikolas Wipper
2024-10-04 10:44 ` Nikolas Wipper
2024-12-11 22:05 ` Sean Christopherson
2024-12-11 22:05 ` Sean Christopherson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240910152207.38974-10-nikwip@amazon.de \
--to=nikwip@amazon.de \
--cc=kvm-riscv@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.