[PATCH 0/9] arm64: Support 2024 dpISA extensions

[PATCH 0/9] arm64: Support 2024 dpISA extensions

[Mark Brown]

The 2024 architecture release includes a number of data processing
extensions, mostly SVE and SME additions with a few others.  These are
all very straightforward extensions which add instructions but no
architectural state so only need hwcaps and exposing of the ID registers
to KVM guests and userspace.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
Mark Brown (9):
      arm64/sysreg: Update ID_AA64PFR2_EL1 to DDI0601 2024-09
      arm64/sysreg: Update ID_AA64ISAR3_EL1 to DDI0601 2024-09
      arm64/sysreg: Update ID_AA64FPFR0_EL1 to DDI0601 2024-09
      arm64/sysreg: Update ID_AA64ZFR0_EL1 to DDI0601 2024-09
      arm64/sysreg: Update ID_AA64SMFR0_EL1 to DDI0601 2024-09
      arm64/sysreg: Update ID_AA64ISAR2_EL1 to DDI0601 2024-09
      arm64/hwcap: Describe 2024 dpISA extensions to userspace
      KVM: arm64: Allow control of dpISA extensions in ID_AA64ISAR3_EL1
      kselftest/arm64: Add 2024 dpISA extensions to hwcap test

 Documentation/arch/arm64/elf_hwcaps.rst   |  51 ++++++
 arch/arm64/include/asm/hwcap.h            |  17 ++
 arch/arm64/include/uapi/asm/hwcap.h       |  17 ++
 arch/arm64/kernel/cpufeature.c            |  35 ++++
 arch/arm64/kernel/cpuinfo.c               |  17 ++
 arch/arm64/kvm/sys_regs.c                 |   3 +-
 arch/arm64/tools/sysreg                   |  87 +++++++++-
 tools/testing/selftests/arm64/abi/hwcap.c | 273 +++++++++++++++++++++++++++++-
 8 files changed, 490 insertions(+), 10 deletions(-)
---
base-commit: 8e929cb546ee42c9a61d24fae60605e9e3192354
change-id: 20241008-arm64-2024-dpisa-8091074a7f48

Best regards,
-- 
Mark Brown <broonie@kernel.org>

[PATCH 1/9] arm64/sysreg: Update ID_AA64PFR2_EL1 to DDI0601 2024-09

[Mark Brown]

DDI0601 2024-09 defines a new feature flags in ID_AA64PFR2_EL1
describing support for injecting UNDEF exceptions, update sysreg to
include this.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 arch/arm64/tools/sysreg | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 8d637ac4b7c6b9c266156b4a8518d8d64c555461..72d6ff1a9c7588dc4894ec6d673791fde108a857 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -1010,7 +1010,12 @@ UnsignedEnum	35:32	FPMR
 	0b0000	NI
 	0b0001	IMP
 EndEnum
-Res0	31:12
+Res0	31:20
+UnsignedEnum	19:16	UINJ
+	0b0000	NI
+	0b0001	IMP
+EndEnum
+Res0	15:12
 UnsignedEnum	11:8	MTEFAR
 	0b0000	NI
 	0b0001	IMP

-- 
2.39.2

[PATCH 2/9] arm64/sysreg: Update ID_AA64ISAR3_EL1 to DDI0601 2024-09

[Mark Brown]

DDI0601 2024-09 defines several new feature flags in ID_AA64ISAR3_EL1,
update our description in sysreg to reflect these.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 arch/arm64/tools/sysreg | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 72d6ff1a9c7588dc4894ec6d673791fde108a857..c77343ff0901bbaee98eb76615dc7b81a563c4b0 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -1531,7 +1531,23 @@ EndEnum
 EndSysreg
 
 Sysreg	ID_AA64ISAR3_EL1	3	0	0	6	3
-Res0	63:16
+Res0	63:32
+UnsignedEnum	31:28	FPRCVT
+	0b0000	NI
+	0b0010	IMP
+EndEnum
+UnsignedEnum	27:24	LSUI
+	0b0000	NI
+	0b0010	IMP
+EndEnum
+UnsignedEnum	23:20	OCCMO
+	0b0000	NI
+	0b0010	IMP
+EndEnum
+UnsignedEnum	19:16	LSFE
+	0b0000	NI
+	0b0010	IMP
+EndEnum
 UnsignedEnum	15:12	PACM
 	0b0000	NI
 	0b0001	TRIVIAL_IMP

-- 
2.39.2

[PATCH 3/9] arm64/sysreg: Update ID_AA64FPFR0_EL1 to DDI0601 2024-09

[Mark Brown]

DDI0601 2024-09 defines two new feature flags in ID_AA64FPFR0_EL1
describing new FP8 operations, describe them in sysreg.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 arch/arm64/tools/sysreg | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index c77343ff0901bbaee98eb76615dc7b81a563c4b0..26f1350c9d2e3baf39ac3bdcc96fc1e6deb5a5c6 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -1180,7 +1180,15 @@ UnsignedEnum	28	F8DP2
 	0b0	NI
 	0b1	IMP
 EndEnum
-Res0	27:2
+UnsignedEnum	27	F8MM8
+	0b0	NI
+	0b1	IMP
+EndEnum
+UnsignedEnum	26	F8MM4
+	0b0	NI
+	0b1	IMP
+EndEnum
+Res0	25:2
 UnsignedEnum	1	F8E4M3
 	0b0	NI
 	0b1	IMP

-- 
2.39.2

[PATCH 4/9] arm64/sysreg: Update ID_AA64ZFR0_EL1 to DDI0601 2024-09

[Mark Brown]

DDI0601 2024-09 introduces SVE 2.2 as well as a few new optional features,
update sysreg to reflect the changes in ID_AA64ZFR0_EL1 enumerating them.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 arch/arm64/tools/sysreg | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 26f1350c9d2e3baf39ac3bdcc96fc1e6deb5a5c6..d487c78520b97c8f96c70181e39eccb91d6fe1af 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -1040,7 +1040,10 @@ UnsignedEnum	55:52	F32MM
 	0b0000	NI
 	0b0001	IMP
 EndEnum
-Res0	51:48
+UnsignedEnum	51:48	F16MM
+	0b0000	NI
+	0b0001	IMP
+EndEnum
 UnsignedEnum	47:44	I8MM
 	0b0000	NI
 	0b0001	IMP
@@ -1058,6 +1061,7 @@ Res0	31:28
 UnsignedEnum	27:24	B16B16
 	0b0000	NI
 	0b0001	IMP
+	0b0010	BFSCALE
 EndEnum
 UnsignedEnum	23:20	BF16
 	0b0000	NI
@@ -1068,16 +1072,22 @@ UnsignedEnum	19:16	BitPerm
 	0b0000	NI
 	0b0001	IMP
 EndEnum
-Res0	15:8
+UnsignedEnum	15:12	EltPerm
+	0b0000	NI
+	0b0001	IMP
+EndEnum
+Res0	11:8
 UnsignedEnum	7:4	AES
 	0b0000	NI
 	0b0001	IMP
 	0b0010	PMULL128
+	0b0011	AES2
 EndEnum
 UnsignedEnum	3:0	SVEver
 	0b0000	IMP
 	0b0001	SVE2
 	0b0010	SVE2p1
+	0b0011	SVE2p2
 EndEnum
 EndSysreg
 

-- 
2.39.2

[PATCH 5/9] arm64/sysreg: Update ID_AA64SMFR0_EL1 to DDI0601 2024-09

[Mark Brown]

DDI0601 2024-09 introduces SME 2.2 as well as a few new optional features,
update sysreg to reflect the changes in ID_AA64SMFR0_EL1 enumerating them.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 arch/arm64/tools/sysreg | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index d487c78520b97c8f96c70181e39eccb91d6fe1af..808bbd6d3a40a4cd652ac25d686f11ccafc5acf3 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -1105,6 +1105,7 @@ UnsignedEnum	59:56	SMEver
 	0b0000	SME
 	0b0001	SME2
 	0b0010	SME2p1
+	0b0011	SME2p2
 	0b0000	IMP
 EndEnum
 UnsignedEnum	55:52	I16I64
@@ -1169,7 +1170,36 @@ UnsignedEnum	28	SF8DP2
 	0b0	NI
 	0b1	IMP
 EndEnum
-Res0	27:0
+UnsignedEnum	27	SF8MM8
+	0b0	NI
+	0b1	IMP
+EndEnum
+UnsignedEnum	26	SF8MM4
+	0b0	NI
+	0b1	IMP
+EndEnum
+UnsignedEnum	25	SBitPerm
+	0b0	NI
+	0b1	IMP
+EndEnum
+UnsignedEnum	24	AES
+	0b0	NI
+	0b1	IMP
+EndEnum
+UnsignedEnum	23	SFEXPA
+	0b0	NI
+	0b1	IMP
+EndEnum
+Res0	22:17
+UnsignedEnum	16	STMOP
+	0b0	NI
+	0b1	IMP
+EndEnum
+Res0	15:1
+UnsignedEnum	0	SMOP4
+	0b0	NI
+	0b1	IMP
+EndEnum
 EndSysreg
 
 Sysreg	ID_AA64FPFR0_EL1	3	0	0	4	7

-- 
2.39.2

[PATCH 6/9] arm64/sysreg: Update ID_AA64ISAR2_EL1 to DDI0601 2024-09

[Mark Brown]

DDI0601 2024-09 introduces new features which are enumerated via
ID_AA64ISAR2_EL1, update the sysreg file to reflect these updates.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 arch/arm64/tools/sysreg | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 808bbd6d3a40a4cd652ac25d686f11ccafc5acf3..c8cc092fc0f63f91c7e87d679266a1f8a38176b0 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -1521,12 +1521,16 @@ EndEnum
 UnsignedEnum	55:52	CSSC
 	0b0000	NI
 	0b0001	IMP
+	0b0010	CMPBR
 EndEnum
 UnsignedEnum	51:48	RPRFM
 	0b0000	NI
 	0b0001	IMP
 EndEnum
-Res0	47:44
+UnsignedEnum	47:44	PCDPHINT
+	0b0000	NI
+	0b0001	IMP
+EndEnum
 UnsignedEnum	43:40	PRFMSLC
 	0b0000	NI
 	0b0001	IMP

-- 
2.39.2

[PATCH 7/9] arm64/hwcap: Describe 2024 dpISA extensions to userspace

[Mark Brown]

The 2024 dpISA introduces a number of architecture features all of which
only add new instructions so only require the addition of hwcaps and ID
register visibility.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 Documentation/arch/arm64/elf_hwcaps.rst | 51 +++++++++++++++++++++++++++++++++
 arch/arm64/include/asm/hwcap.h          | 17 +++++++++++
 arch/arm64/include/uapi/asm/hwcap.h     | 17 +++++++++++
 arch/arm64/kernel/cpufeature.c          | 35 ++++++++++++++++++++++
 arch/arm64/kernel/cpuinfo.c             | 17 +++++++++++
 5 files changed, 137 insertions(+)

diff --git a/Documentation/arch/arm64/elf_hwcaps.rst b/Documentation/arch/arm64/elf_hwcaps.rst
index 694f67fa07d196816b1292e896ebe6a1b599c125..a364bb04cc797e2597d31798540ccd3a2e6ddd71 100644
--- a/Documentation/arch/arm64/elf_hwcaps.rst
+++ b/Documentation/arch/arm64/elf_hwcaps.rst
@@ -170,6 +170,57 @@ HWCAP_PACG
     ID_AA64ISAR1_EL1.GPI == 0b0001, as described by
     Documentation/arch/arm64/pointer-authentication.rst.
 
+HWCAP_CMPBR
+    Functionality implied by ID_AA64ISAR2_EL1.CSSC == 0b0010.
+
+HWCAP_FPRCVT
+    Functionality implied by ID_AA64ISAR3_EL1.FPRCVT == 0b0001.
+
+HWCAP_F8MM8
+    Functionality implied by ID_AA64FPFR0_EL1.F8MM8 == 0b0001.
+
+HWCAP_F8MM4
+    Functionality implied by ID_AA64FPFR0_EL1.F8MM4 == 0b0001.
+
+HWCAP_SVE_F16MM
+    Functionality implied by ID_AA64ZFR0_EL1.F16MM == 0b0001.
+
+HWCAP_SVE_ELTPERM
+    Functionality implied by ID_AA64ZFR0_EL1.ELTPERM == 0b0001.
+
+HWCAP_SVE_AES2
+    Functionality implied by ID_AA64ZFR0_EL1.AES == 0b0011.
+
+HWCAP_SVE_BFSCALE
+    Functionality implied by ID_AA64ZFR0_EL1.B16B16 == 0b0010.
+
+HWCAP_SVE2P2
+    Functionality implied by ID_AA64ZFR0_EL1.SVEver == 0b0011.
+
+HWCAP_SME2P2
+    Functionality implied by ID_AA64SMFR0_EL1.SMEver == 0b0011.
+
+HWCAP_SME_SF8MM8
+    Functionality implied by ID_AA64SMFR0_EL1.SF8MM8 == 0b1.
+
+HWCAP_SME_SF8MM4
+    Functionality implied by ID_AA64SMFR0_EL1.SF8MM4 == 0b1.
+
+HWCAP_SME_SBITPERM
+    Functionality implied by ID_AA64SMFR0_EL1.SBitPerm == 0b1.
+
+HWCAP_SME_AES
+    Functionality implied by ID_AA64SMFR0_EL1.AES == 0b1.
+
+HWCAP_SME_SFEXPA
+    Functionality implied by ID_AA64SMFR0_EL1.SFEXPA == 0b1.
+
+HWCAP_SME_STMOP
+    Functionality implied by ID_AA64SMFR0_EL1.STMOP == 0b1.
+
+HWCAP_SME_SMOP4
+    Functionality implied by ID_AA64SMFR0_EL1.SMOP4 == 0b1.
+
 HWCAP2_DCPODP
     Functionality implied by ID_AA64ISAR1_EL1.DPB == 0b0010.
 
diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h
index a775adddecf25633e87d58fb9ac9e6293beac1b3..aad44880c31d4ddb1691a22946ed492456ab6cd6 100644
--- a/arch/arm64/include/asm/hwcap.h
+++ b/arch/arm64/include/asm/hwcap.h
@@ -92,6 +92,23 @@
 #define KERNEL_HWCAP_SB			__khwcap_feature(SB)
 #define KERNEL_HWCAP_PACA		__khwcap_feature(PACA)
 #define KERNEL_HWCAP_PACG		__khwcap_feature(PACG)
+#define KERNEL_HWCAP_CMPBR		__khwcap_feature(CMPBR)
+#define KERNEL_HWCAP_FPRCVT		__khwcap_feature(FPRCVT)
+#define KERNEL_HWCAP_F8MM8		__khwcap_feature(F8MM8)
+#define KERNEL_HWCAP_F8MM4		__khwcap_feature(F8MM4)
+#define KERNEL_HWCAP_SVE_F16MM		__khwcap_feature(SVE_F16MM)
+#define KERNEL_HWCAP_SVE_ELTPERM	__khwcap_feature(SVE_ELTPERM)
+#define KERNEL_HWCAP_SVE_AES2		__khwcap_feature(SVE_AES2)
+#define KERNEL_HWCAP_SVE_BFSCALE	__khwcap_feature(SVE_BFSCALE)
+#define KERNEL_HWCAP_SVE2P2		__khwcap_feature(SVE2P2)
+#define KERNEL_HWCAP_SME2P2		__khwcap_feature(SME2P2)
+#define KERNEL_HWCAP_SME_SF8MM8		__khwcap_feature(SME_SF8MM8)
+#define KERNEL_HWCAP_SME_SF8MM4		__khwcap_feature(SME_SF8MM4)
+#define KERNEL_HWCAP_SME_SBITPERM	__khwcap_feature(SME_SBITPERM)
+#define KERNEL_HWCAP_SME_AES		__khwcap_feature(SME_AES)
+#define KERNEL_HWCAP_SME_SFEXPA		__khwcap_feature(SME_SFEXPA)
+#define KERNEL_HWCAP_SME_STMOP		__khwcap_feature(SME_STMOP)
+#define KERNEL_HWCAP_SME_SMOP4		__khwcap_feature(SME_SMOP4)
 
 #define __khwcap2_feature(x)		(const_ilog2(HWCAP2_ ## x) + 64)
 #define KERNEL_HWCAP_DCPODP		__khwcap2_feature(DCPODP)
diff --git a/arch/arm64/include/uapi/asm/hwcap.h b/arch/arm64/include/uapi/asm/hwcap.h
index 055381b2c61595361c2d57d38be936c2dfeaa195..6720c7b6cfa4df818b088b858b1bffe084dd85f3 100644
--- a/arch/arm64/include/uapi/asm/hwcap.h
+++ b/arch/arm64/include/uapi/asm/hwcap.h
@@ -55,6 +55,23 @@
 #define HWCAP_SB		(1 << 29)
 #define HWCAP_PACA		(1 << 30)
 #define HWCAP_PACG		(1UL << 31)
+#define HWCAP_CMPBR		(1UL << 33)
+#define HWCAP_FPRCVT		(1UL << 34)
+#define HWCAP_F8MM8		(1UL << 35)
+#define HWCAP_F8MM4		(1UL << 36)
+#define HWCAP_SVE_F16MM		(1UL << 37)
+#define HWCAP_SVE_ELTPERM	(1UL << 38)
+#define HWCAP_SVE_AES2		(1UL << 39)
+#define HWCAP_SVE_BFSCALE	(1UL << 40)
+#define HWCAP_SVE2P2		(1UL << 41)
+#define HWCAP_SME2P2		(1UL << 42)
+#define HWCAP_SME_SF8MM8	(1UL << 43)
+#define HWCAP_SME_SF8MM4	(1UL << 44)
+#define HWCAP_SME_SBITPERM	(1UL << 45)
+#define HWCAP_SME_AES		(1UL << 46)
+#define HWCAP_SME_SFEXPA	(1UL << 47)
+#define HWCAP_SME_STMOP		(1UL << 48)
+#define HWCAP_SME_SMOP4		(1UL << 49)
 
 /*
  * HWCAP2 flags - for AT_HWCAP2
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 718728a85430fad5151b73fa213a510efac3f834..fc4acd62e853dfc9793dcf0afac52d7dfed78519 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -266,6 +266,7 @@ static const struct arm64_ftr_bits ftr_id_aa64isar2[] = {
 };
 
 static const struct arm64_ftr_bits ftr_id_aa64isar3[] = {
+	ARM64_FTR_BITS(FTR_VISIBLE, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64ISAR3_EL1_FPRCVT_SHIFT, 4, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64ISAR3_EL1_FAMINMAX_SHIFT, 4, 0),
 	ARM64_FTR_END,
 };
@@ -313,6 +314,8 @@ static const struct arm64_ftr_bits ftr_id_aa64zfr0[] = {
 		       FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ZFR0_EL1_F64MM_SHIFT, 4, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
 		       FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ZFR0_EL1_F32MM_SHIFT, 4, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
+		       FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ZFR0_EL1_F16MM_SHIFT, 4, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
 		       FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ZFR0_EL1_I8MM_SHIFT, 4, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
@@ -325,6 +328,8 @@ static const struct arm64_ftr_bits ftr_id_aa64zfr0[] = {
 		       FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ZFR0_EL1_BF16_SHIFT, 4, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
 		       FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ZFR0_EL1_BitPerm_SHIFT, 4, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
+		       FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ZFR0_EL1_EltPerm_SHIFT, 4, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
 		       FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ZFR0_EL1_AES_SHIFT, 4, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
@@ -369,6 +374,20 @@ static const struct arm64_ftr_bits ftr_id_aa64smfr0[] = {
 		       FTR_STRICT, FTR_EXACT, ID_AA64SMFR0_EL1_SF8DP4_SHIFT, 1, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SME),
 		       FTR_STRICT, FTR_EXACT, ID_AA64SMFR0_EL1_SF8DP2_SHIFT, 1, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SME),
+		       FTR_STRICT, FTR_EXACT, ID_AA64SMFR0_EL1_SF8MM8_SHIFT, 1, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SME),
+		       FTR_STRICT, FTR_EXACT, ID_AA64SMFR0_EL1_SF8MM4_SHIFT, 1, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SME),
+		       FTR_STRICT, FTR_EXACT, ID_AA64SMFR0_EL1_SBitPerm_SHIFT, 1, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SME),
+		       FTR_STRICT, FTR_EXACT, ID_AA64SMFR0_EL1_AES_SHIFT, 1, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SME),
+		       FTR_STRICT, FTR_EXACT, ID_AA64SMFR0_EL1_SFEXPA_SHIFT, 1, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SME),
+		       FTR_STRICT, FTR_EXACT, ID_AA64SMFR0_EL1_STMOP_SHIFT, 1, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SME),
+		       FTR_STRICT, FTR_EXACT, ID_AA64SMFR0_EL1_SMOP4_SHIFT, 1, 0),
 	ARM64_FTR_END,
 };
 
@@ -377,6 +396,8 @@ static const struct arm64_ftr_bits ftr_id_aa64fpfr0[] = {
 	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64FPFR0_EL1_F8FMA_SHIFT, 1, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64FPFR0_EL1_F8DP4_SHIFT, 1, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64FPFR0_EL1_F8DP2_SHIFT, 1, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64FPFR0_EL1_F8MM8_SHIFT, 1, 0),
+	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64FPFR0_EL1_F8MM4_SHIFT, 1, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64FPFR0_EL1_F8E4M3_SHIFT, 1, 0),
 	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64FPFR0_EL1_F8E5M2_SHIFT, 1, 0),
 	ARM64_FTR_END,
@@ -2992,12 +3013,15 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
 	HWCAP_CAP(ID_AA64MMFR2_EL1, AT, IMP, CAP_HWCAP, KERNEL_HWCAP_USCAT),
 #ifdef CONFIG_ARM64_SVE
 	HWCAP_CAP(ID_AA64PFR0_EL1, SVE, IMP, CAP_HWCAP, KERNEL_HWCAP_SVE),
+	HWCAP_CAP(ID_AA64ZFR0_EL1, SVEver, SVE2p2, CAP_HWCAP, KERNEL_HWCAP_SVE2P2),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, SVEver, SVE2p1, CAP_HWCAP, KERNEL_HWCAP_SVE2P1),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, SVEver, SVE2, CAP_HWCAP, KERNEL_HWCAP_SVE2),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, AES, IMP, CAP_HWCAP, KERNEL_HWCAP_SVEAES),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, AES, PMULL128, CAP_HWCAP, KERNEL_HWCAP_SVEPMULL),
+	HWCAP_CAP(ID_AA64ZFR0_EL1, AES, AES2, CAP_HWCAP, KERNEL_HWCAP_SVE_AES2),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, BitPerm, IMP, CAP_HWCAP, KERNEL_HWCAP_SVEBITPERM),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, B16B16, IMP, CAP_HWCAP, KERNEL_HWCAP_SVE_B16B16),
+	HWCAP_CAP(ID_AA64ZFR0_EL1, B16B16, BFSCALE, CAP_HWCAP, KERNEL_HWCAP_SVE_BFSCALE),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, BF16, IMP, CAP_HWCAP, KERNEL_HWCAP_SVEBF16),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, BF16, EBF16, CAP_HWCAP, KERNEL_HWCAP_SVE_EBF16),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, SHA3, IMP, CAP_HWCAP, KERNEL_HWCAP_SVESHA3),
@@ -3005,6 +3029,8 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
 	HWCAP_CAP(ID_AA64ZFR0_EL1, I8MM, IMP, CAP_HWCAP, KERNEL_HWCAP_SVEI8MM),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, F32MM, IMP, CAP_HWCAP, KERNEL_HWCAP_SVEF32MM),
 	HWCAP_CAP(ID_AA64ZFR0_EL1, F64MM, IMP, CAP_HWCAP, KERNEL_HWCAP_SVEF64MM),
+	HWCAP_CAP(ID_AA64ZFR0_EL1, F16MM, IMP, CAP_HWCAP, KERNEL_HWCAP_SVE_F16MM),
+	HWCAP_CAP(ID_AA64ZFR0_EL1, EltPerm, IMP, CAP_HWCAP, KERNEL_HWCAP_SVE_ELTPERM),
 #endif
 	HWCAP_CAP(ID_AA64PFR1_EL1, SSBS, SSBS2, CAP_HWCAP, KERNEL_HWCAP_SSBS),
 #ifdef CONFIG_ARM64_BTI
@@ -3021,6 +3047,7 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
 	HWCAP_CAP(ID_AA64MMFR0_EL1, ECV, IMP, CAP_HWCAP, KERNEL_HWCAP_ECV),
 	HWCAP_CAP(ID_AA64MMFR1_EL1, AFP, IMP, CAP_HWCAP, KERNEL_HWCAP_AFP),
 	HWCAP_CAP(ID_AA64ISAR2_EL1, CSSC, IMP, CAP_HWCAP, KERNEL_HWCAP_CSSC),
+	HWCAP_CAP(ID_AA64ISAR2_EL1, CSSC, CMPBR, CAP_HWCAP, KERNEL_HWCAP_CMPBR),
 	HWCAP_CAP(ID_AA64ISAR2_EL1, RPRFM, IMP, CAP_HWCAP, KERNEL_HWCAP_RPRFM),
 	HWCAP_CAP(ID_AA64ISAR2_EL1, RPRES, IMP, CAP_HWCAP, KERNEL_HWCAP_RPRES),
 	HWCAP_CAP(ID_AA64ISAR2_EL1, WFxT, IMP, CAP_HWCAP, KERNEL_HWCAP_WFXT),
@@ -3030,6 +3057,7 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
 	HWCAP_CAP(ID_AA64PFR1_EL1, SME, IMP, CAP_HWCAP, KERNEL_HWCAP_SME),
 	HWCAP_CAP(ID_AA64SMFR0_EL1, FA64, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_FA64),
 	HWCAP_CAP(ID_AA64SMFR0_EL1, LUTv2, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_LUTV2),
+	HWCAP_CAP(ID_AA64SMFR0_EL1, SMEver, SME2p2, CAP_HWCAP, KERNEL_HWCAP_SME2P2),
 	HWCAP_CAP(ID_AA64SMFR0_EL1, SMEver, SME2p1, CAP_HWCAP, KERNEL_HWCAP_SME2P1),
 	HWCAP_CAP(ID_AA64SMFR0_EL1, SMEver, SME2, CAP_HWCAP, KERNEL_HWCAP_SME2),
 	HWCAP_CAP(ID_AA64SMFR0_EL1, I16I64, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_I16I64),
@@ -3047,6 +3075,13 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
 	HWCAP_CAP(ID_AA64SMFR0_EL1, SF8FMA, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_SF8FMA),
 	HWCAP_CAP(ID_AA64SMFR0_EL1, SF8DP4, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_SF8DP4),
 	HWCAP_CAP(ID_AA64SMFR0_EL1, SF8DP2, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_SF8DP2),
+	HWCAP_CAP(ID_AA64SMFR0_EL1, SF8MM8, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_SF8MM8),
+	HWCAP_CAP(ID_AA64SMFR0_EL1, SF8MM4, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_SF8MM4),
+	HWCAP_CAP(ID_AA64SMFR0_EL1, SBitPerm, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_SBITPERM),
+	HWCAP_CAP(ID_AA64SMFR0_EL1, AES, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_AES),
+	HWCAP_CAP(ID_AA64SMFR0_EL1, SFEXPA, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_SFEXPA),
+	HWCAP_CAP(ID_AA64SMFR0_EL1, STMOP, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_STMOP),
+	HWCAP_CAP(ID_AA64SMFR0_EL1, SMOP4, IMP, CAP_HWCAP, KERNEL_HWCAP_SME_SMOP4),
 #endif /* CONFIG_ARM64_SME */
 	HWCAP_CAP(ID_AA64FPFR0_EL1, F8CVT, IMP, CAP_HWCAP, KERNEL_HWCAP_F8CVT),
 	HWCAP_CAP(ID_AA64FPFR0_EL1, F8FMA, IMP, CAP_HWCAP, KERNEL_HWCAP_F8FMA),
diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index 44718d0482b3b43175a1673ccbebc70cf16ddcb2..d2e4f1a861e59d73bb77a06b030c4b51a8542db6 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -144,6 +144,23 @@ static const char *const hwcap_str[] = {
 	[KERNEL_HWCAP_SME_SF8DP4]	= "smesf8dp4",
 	[KERNEL_HWCAP_SME_SF8DP2]	= "smesf8dp2",
 	[KERNEL_HWCAP_POE]		= "poe",
+	[KERNEL_HWCAP_CMPBR]		= "cmpbr",
+	[KERNEL_HWCAP_FPRCVT]		= "fprcvt",
+	[KERNEL_HWCAP_F8MM8]		= "f8mm8",
+	[KERNEL_HWCAP_F8MM4]		= "f8mm4",
+	[KERNEL_HWCAP_SVE_F16MM]	= "svef16mm",
+	[KERNEL_HWCAP_SVE_ELTPERM]	= "sveeltperm",
+	[KERNEL_HWCAP_SVE_AES2]		= "sveaes2",
+	[KERNEL_HWCAP_SVE_BFSCALE]	= "svebfscale",
+	[KERNEL_HWCAP_SVE2P2]		= "sve2p2",
+	[KERNEL_HWCAP_SME2P2]		= "sme2p2",
+	[KERNEL_HWCAP_SME_SF8MM8]	= "smesf8mm8",
+	[KERNEL_HWCAP_SME_SF8MM4]	= "smesf8mm4",
+	[KERNEL_HWCAP_SME_SBITPERM]	= "smesbitperm",
+	[KERNEL_HWCAP_SME_AES]		= "smeaes",
+	[KERNEL_HWCAP_SME_SFEXPA]	= "smesfexpa",
+	[KERNEL_HWCAP_SME_STMOP]	= "smestmop",
+	[KERNEL_HWCAP_SME_SMOP4]	= "smesmop4",
 };
 
 #ifdef CONFIG_COMPAT

-- 
2.39.2

[PATCH 8/9] KVM: arm64: Allow control of dpISA extensions in ID_AA64ISAR3_EL1

[Mark Brown]

ID_AA64ISAR3_EL1 is currently marked as unallocated in KVM but does have a
number of bitfields defined in it. Expose FPRCVT and FAMINMAX, two simple
instruction only extensions to guests.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 arch/arm64/kvm/sys_regs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index dad88e31f9537fe02e28b117d6a740f15572e0ba..ab348c314d7963437e1876d441169f3ef4eff095 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2409,7 +2409,8 @@ static const struct sys_reg_desc sys_reg_descs[] = {
 	ID_WRITABLE(ID_AA64ISAR2_EL1, ~(ID_AA64ISAR2_EL1_RES0 |
 					ID_AA64ISAR2_EL1_APA3 |
 					ID_AA64ISAR2_EL1_GPA3)),
-	ID_UNALLOCATED(6,3),
+	ID_WRITABLE(ID_AA64ISAR3_EL1, (ID_AA64ISAR3_EL1_FPRCVT |
+				       ID_AA64ISAR3_EL1_FAMINMAX)),
 	ID_UNALLOCATED(6,4),
 	ID_UNALLOCATED(6,5),
 	ID_UNALLOCATED(6,6),

-- 
2.39.2

[PATCH 9/9] kselftest/arm64: Add 2024 dpISA extensions to hwcap test

[Mark Brown]

We don't actually test SIGILL generation for CMPBR since the need to
branch makes it a pain to generate and the SIGILL detection would be
unreliable anyway. Since this should be very unusual we provide a stub
function rather than supporting a missing function.

The sigill functions aren't well sorted in the file so the ordering is a
bit random.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 tools/testing/selftests/arm64/abi/hwcap.c | 273 +++++++++++++++++++++++++++++-
 1 file changed, 271 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c
index f2d6007a2b983eba77a880ec7e614396a6cb1377..beb380bc09b0d07269a85a60e5d2977367740473 100644
--- a/tools/testing/selftests/arm64/abi/hwcap.c
+++ b/tools/testing/selftests/arm64/abi/hwcap.c
@@ -46,6 +46,12 @@ static void atomics_sigill(void)
 	asm volatile(".inst 0xb82003ff" : : : );
 }
 
+static void cmpbr_sigill(void)
+{
+	/* Not implemented, too complicated and unreliable anyway */
+}
+
+
 static void crc32_sigill(void)
 {
 	/* CRC32W W0, W0, W1 */
@@ -82,6 +88,18 @@ static void f8fma_sigill(void)
 	asm volatile(".inst 0xec0fc00");
 }
 
+static void f8mm4_sigill(void)
+{
+	/* FMMLA V0.4SH, V0.16B, V0.16B */
+	asm volatile(".inst 0x6e00ec00");
+}
+
+static void f8mm8_sigill(void)
+{
+	/* FMMLA V0.4S, V0.16B, V0.16B */
+	asm volatile(".inst 0x6e80ec00");
+}
+
 static void faminmax_sigill(void)
 {
 	/* FAMIN V0.4H, V0.4H, V0.4H */
@@ -98,6 +116,12 @@ static void fpmr_sigill(void)
 	asm volatile("mrs x0, S3_3_C4_C4_2" : : : "x0");
 }
 
+static void fprcvt_sigill(void)
+{
+	/* FCVTAS S0, H0 */
+	asm volatile(".inst 0x1efa0000");
+}
+
 static void ilrcpc_sigill(void)
 {
 	/* LDAPUR W0, [SP, #8] */
@@ -215,6 +239,42 @@ static void sme2p1_sigill(void)
 	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
 }
 
+static void sme2p2_sigill(void)
+{
+	/* SMSTART SM */
+	asm volatile("msr S0_3_C4_C3_3, xzr" : : : );
+
+	/* UXTB Z0.D, P0/Z, Z0.D  */
+	asm volatile(".inst 0x4c1a000" : : : );
+
+	/* SMSTOP */
+	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
+}
+
+static void sme_aes_sigill(void)
+{
+	/* SMSTART SM */
+	asm volatile("msr S0_3_C4_C3_3, xzr" : : : );
+
+	/* AESD z0.b, z0.b, z0.b */
+	asm volatile(".inst 0x4522e400" : : : "z0");
+
+	/* SMSTOP */
+	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
+}
+
+static void sme_sbitperm_sigill(void)
+{
+	/* SMSTART SM */
+	asm volatile("msr S0_3_C4_C3_3, xzr" : : : );
+
+	/* BDEP Z0.B, Z0.B, Z0.B */
+	asm volatile(".inst 0x4500b400" : : : "z0");
+
+	/* SMSTOP */
+	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
+}
+
 static void smei16i32_sigill(void)
 {
 	/* SMSTART */
@@ -323,13 +383,73 @@ static void smesf8dp4_sigill(void)
 	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
 }
 
+static void smesf8mm8_sigill(void)
+{
+	/* SMSTART */
+	asm volatile("msr S0_3_C4_C7_3, xzr" : : : );
+
+	/* FMMLA V0.4S, V0.16B, V0.16B */
+	asm volatile(".inst 0x6e80ec00");
+
+	/* SMSTOP */
+	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
+}
+
+static void smesf8mm4_sigill(void)
+{
+	/* SMSTART */
+	asm volatile("msr S0_3_C4_C7_3, xzr" : : : );
+
+	/* FMMLA V0.4SH, V0.16B, V0.16B */
+	asm volatile(".inst 0x6e00ec00");
+
+	/* SMSTOP */
+	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
+}
+
 static void smesf8fma_sigill(void)
 {
 	/* SMSTART */
 	asm volatile("msr S0_3_C4_C7_3, xzr" : : : );
 
-	/* FMLALB V0.8H, V0.16B, V0.16B */
-	asm volatile(".inst 0xec0fc00");
+	/* FMLALB Z0.8H, Z0.B, Z0.B */
+	asm volatile(".inst 0x64205000");
+
+	/* SMSTOP */
+	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
+}
+
+static void smesfexpa_sigill(void)
+{
+	/* SMSTART */
+	asm volatile("msr S0_3_C4_C7_3, xzr" : : : );
+
+	/* FEXPA Z0.D, Z0.D */
+	asm volatile(".inst 0x04e0b800");
+
+	/* SMSTOP */
+	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
+}
+
+static void smesmop4_sigill(void)
+{
+	/* SMSTART */
+	asm volatile("msr S0_3_C4_C7_3, xzr" : : : );
+
+	/* SMOP4A ZA0.S, Z0.B, { Z0.B - Z1.B } */
+	asm volatile(".inst 0x80108000");
+
+	/* SMSTOP */
+	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
+}
+
+static void smestmop_sigill(void)
+{
+	/* SMSTART */
+	asm volatile("msr S0_3_C4_C7_3, xzr" : : : );
+
+	/* STMOPA ZA0.S, { Z0.H - Z1.H }, Z0.H, Z20[0] */
+	asm volatile(".inst 0x80408008");
 
 	/* SMSTOP */
 	asm volatile("msr S0_3_C4_C6_3, xzr" : : : );
@@ -353,18 +473,42 @@ static void sve2p1_sigill(void)
 	asm volatile(".inst 0x65000000" : : : "z0");
 }
 
+static void sve2p2_sigill(void)
+{
+	/* NOT Z0.D, P0/Z, Z0.D */
+	asm volatile(".inst 0x4cea000" : : : "z0");
+}
+
 static void sveaes_sigill(void)
 {
 	/* AESD z0.b, z0.b, z0.b */
 	asm volatile(".inst 0x4522e400" : : : "z0");
 }
 
+static void sveaes2_sigill(void)
+{
+	/* AESD {Z0.B - Z1.B }, { Z0.B - Z1.B }, Z0.Q */
+	asm volatile(".inst 0x4522ec00" : : : "z0");
+}
+
 static void sveb16b16_sigill(void)
 {
 	/* BFADD ZA.H[W0, 0], {Z0.H-Z1.H} */
 	asm volatile(".inst 0xC1E41C00" : : : );
 }
 
+static void svebfscale_sigill(void)
+{
+	/* BFSCALE Z0.H, P0/M, Z0.H, Z0.H */
+	asm volatile(".inst 0x65098000" : : : "z0");
+}
+
+static void svef16mm_sigill(void)
+{
+	/* FMMLA Z0.S, Z0.H, Z0.H */
+	asm volatile(".inst 0x6420e400");
+}
+
 static void svepmull_sigill(void)
 {
 	/* PMULLB Z0.Q, Z0.D, Z0.D */
@@ -383,6 +527,12 @@ static void svesha3_sigill(void)
 	asm volatile(".inst 0x4203800" : : : "z0");
 }
 
+static void sveeltperm_sigill(void)
+{
+	/* COMPACT Z0.B, P0, Z0.B */
+	asm volatile(".inst 0x5218000" : : : "x0");
+}
+
 static void svesm4_sigill(void)
 {
 	/* SM4E Z0.S, Z0.S, Z0.S */
@@ -458,6 +608,13 @@ static const struct hwcap_data {
 		.cpuinfo = "aes",
 		.sigill_fn = aes_sigill,
 	},
+	{
+		.name = "CMPBR",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_CMPBR,
+		.cpuinfo = "cmpbr",
+		.sigill_fn = cmpbr_sigill,
+	},
 	{
 		.name = "CRC32",
 		.at_hwcap = AT_HWCAP,
@@ -512,6 +669,20 @@ static const struct hwcap_data {
 		.cpuinfo = "f8fma",
 		.sigill_fn = f8fma_sigill,
 	},
+	{
+		.name = "F8MM8",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_F8MM8,
+		.cpuinfo = "f8mm8",
+		.sigill_fn = f8mm8_sigill,
+	},
+	{
+		.name = "F8MM4",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_F8MM4,
+		.cpuinfo = "f8mm4",
+		.sigill_fn = f8mm4_sigill,
+	},
 	{
 		.name = "FAMINMAX",
 		.at_hwcap = AT_HWCAP2,
@@ -534,6 +705,13 @@ static const struct hwcap_data {
 		.sigill_fn = fpmr_sigill,
 		.sigill_reliable = true,
 	},
+	{
+		.name = "FPRCVT",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_FPRCVT,
+		.cpuinfo = "fprcvt",
+		.sigill_fn = fprcvt_sigill,
+	},
 	{
 		.name = "JSCVT",
 		.at_hwcap = AT_HWCAP,
@@ -672,6 +850,20 @@ static const struct hwcap_data {
 		.cpuinfo = "sme2p1",
 		.sigill_fn = sme2p1_sigill,
 	},
+	{
+		.name = "SME 2.2",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SME2P2,
+		.cpuinfo = "sme2p2",
+		.sigill_fn = sme2p2_sigill,
+	},
+	{
+		.name = "SME AES",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SME_AES,
+		.cpuinfo = "smeaes",
+		.sigill_fn = sme_aes_sigill,
+	},
 	{
 		.name = "SME I16I32",
 		.at_hwcap = AT_HWCAP2,
@@ -721,6 +913,13 @@ static const struct hwcap_data {
 		.cpuinfo = "smelutv2",
 		.sigill_fn = smelutv2_sigill,
 	},
+	{
+		.name = "SME SBITPERM",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SME_SBITPERM,
+		.cpuinfo = "smesbitperm",
+		.sigill_fn = sme_sbitperm_sigill,
+	},
 	{
 		.name = "SME SF8FMA",
 		.at_hwcap = AT_HWCAP2,
@@ -728,6 +927,20 @@ static const struct hwcap_data {
 		.cpuinfo = "smesf8fma",
 		.sigill_fn = smesf8fma_sigill,
 	},
+	{
+		.name = "SME SF8MM8",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SME_SF8MM8,
+		.cpuinfo = "smesf8mm8",
+		.sigill_fn = smesf8mm8_sigill,
+	},
+	{
+		.name = "SME SF8MM4",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SME_SF8MM8,
+		.cpuinfo = "smesf8mm4",
+		.sigill_fn = smesf8mm4_sigill,
+	},
 	{
 		.name = "SME SF8DP2",
 		.at_hwcap = AT_HWCAP2,
@@ -742,6 +955,27 @@ static const struct hwcap_data {
 		.cpuinfo = "smesf8dp4",
 		.sigill_fn = smesf8dp4_sigill,
 	},
+	{
+		.name = "SME SFEXPA",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SME_SFEXPA,
+		.cpuinfo = "smesfexpa",
+		.sigill_fn = smesfexpa_sigill,
+	},
+	{
+		.name = "SME SMOP4",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SME_SMOP4,
+		.cpuinfo = "smesmop4",
+		.sigill_fn = smesmop4_sigill,
+	},
+	{
+		.name = "SME STMOP",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SME_STMOP,
+		.cpuinfo = "smestmop",
+		.sigill_fn = smestmop_sigill,
+	},
 	{
 		.name = "SVE",
 		.at_hwcap = AT_HWCAP,
@@ -764,6 +998,13 @@ static const struct hwcap_data {
 		.cpuinfo = "sve2p1",
 		.sigill_fn = sve2p1_sigill,
 	},
+	{
+		.name = "SVE 2.2",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SVE2P2,
+		.cpuinfo = "sve2p2",
+		.sigill_fn = sve2p2_sigill,
+	},
 	{
 		.name = "SVE AES",
 		.at_hwcap = AT_HWCAP2,
@@ -771,6 +1012,34 @@ static const struct hwcap_data {
 		.cpuinfo = "sveaes",
 		.sigill_fn = sveaes_sigill,
 	},
+	{
+		.name = "SVE AES2",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SVE_AES2,
+		.cpuinfo = "sveaes2",
+		.sigill_fn = sveaes2_sigill,
+	},
+	{
+		.name = "SVE BFSCALE",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SVE_BFSCALE,
+		.cpuinfo = "svebfscale",
+		.sigill_fn = svebfscale_sigill,
+	},
+	{
+		.name = "SVE ELTPERM",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SVE_ELTPERM,
+		.cpuinfo = "sveeltperm",
+		.sigill_fn = sveeltperm_sigill,
+	},
+	{
+		.name = "SVE F16MM",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_SVE_F16MM,
+		.cpuinfo = "svef16mm",
+		.sigill_fn = svef16mm_sigill,
+	},
 	{
 		.name = "SVE2 B16B16",
 		.at_hwcap = AT_HWCAP2,

-- 
2.39.2

Re: [PATCH 8/9] KVM: arm64: Allow control of dpISA extensions in ID_AA64ISAR3_EL1

[Marc Zyngier]

On Mon, 28 Oct 2024 20:24:17 +0000,
Mark Brown <broonie@kernel.org> wrote:
> 
> ID_AA64ISAR3_EL1 is currently marked as unallocated in KVM but does have a
> number of bitfields defined in it. Expose FPRCVT and FAMINMAX, two simple
> instruction only extensions to guests.
> 
> Signed-off-by: Mark Brown <broonie@kernel.org>
> ---
>  arch/arm64/kvm/sys_regs.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index dad88e31f9537fe02e28b117d6a740f15572e0ba..ab348c314d7963437e1876d441169f3ef4eff095 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -2409,7 +2409,8 @@ static const struct sys_reg_desc sys_reg_descs[] = {
>  	ID_WRITABLE(ID_AA64ISAR2_EL1, ~(ID_AA64ISAR2_EL1_RES0 |
>  					ID_AA64ISAR2_EL1_APA3 |
>  					ID_AA64ISAR2_EL1_GPA3)),
> -	ID_UNALLOCATED(6,3),
> +	ID_WRITABLE(ID_AA64ISAR3_EL1, (ID_AA64ISAR3_EL1_FPRCVT |
> +				       ID_AA64ISAR3_EL1_FAMINMAX)),

Please add the required sanitisation of the register so that we do not
get any surprise exposure of unhandled features when someone changes
ftr_id_aa64isar3[].

	M.

-- 
Without deviation from the norm, progress is not possible.

Re: [PATCH 8/9] KVM: arm64: Allow control of dpISA extensions in ID_AA64ISAR3_EL1

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 584 bytes --]

On Tue, Oct 29, 2024 at 04:45:00PM +0000, Marc Zyngier wrote:
> Mark Brown <broonie@kernel.org> wrote:

> > +	ID_WRITABLE(ID_AA64ISAR3_EL1, (ID_AA64ISAR3_EL1_FPRCVT |
> > +				       ID_AA64ISAR3_EL1_FAMINMAX)),

> Please add the required sanitisation of the register so that we do not
> get any surprise exposure of unhandled features when someone changes
> ftr_id_aa64isar3[].

Hrm, right - sorry I missed that.  The other registers I was looking at
don't do any filtering.  This feels like something the helpers should do
but that's simply not how things are structured right now.

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]