[v2] arm64: Support 2024 dpISA extensions

[PATCH v2 0/9] arm64: Support 2024 dpISA extensions

Mark Brown posted 9 patches 3 weeks, 4 days ago

Diff against v1
Download series mbox

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                 |   6 +-
arch/arm64/tools/sysreg                   |  87 +++++++++-
tools/testing/selftests/arm64/abi/hwcap.c | 273 +++++++++++++++++++++++++++++-
8 files changed, 493 insertions(+), 10 deletions(-)

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[PATCH v2 0/9] arm64: Support 2024 dpISA extensions

Posted by Mark Brown 3 weeks, 4 days ago

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>
---
Changes in v2:
- Filter KVM guest visible bitfields in ID_AA64ISAR3_EL1 to only those
  we make writeable.
- Link to v1: https://lore.kernel.org/r/20241028-arm64-2024-dpisa-v1-0-a38d08b008a8@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                 |   6 +-
 arch/arm64/tools/sysreg                   |  87 +++++++++-
 tools/testing/selftests/arm64/abi/hwcap.c | 273 +++++++++++++++++++++++++++++-
 8 files changed, 493 insertions(+), 10 deletions(-)
---
base-commit: 8e929cb546ee42c9a61d24fae60605e9e3192354
change-id: 20241008-arm64-2024-dpisa-8091074a7f48

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