This is the next iteration of this series trying to plug some of our
RAS holes (no pun intended...). See [1] for the original series.
The difference with the previous drop is that we don't try to expose a
canonical encoding RASv1p1. Which means you must migrate between
similar implementations for now.
I've also added a cleanup patch at the end, which can be dropped.
Patches on top of v6.17-rc1.
* From v2 [2]:
- Drop the canonical RASv1p1 advertisement
- Expose ID_AA64PFR1_EL1.RAS_frac as a writable field
- Added an extra patch dropping ARM64_FEATURE_MASK(), as it is both
useless and annoying
- Pick RB from Joey (thanks!)
* From v1 [1]:
- Bunch of patches picked by Oliver (thanks!)
- Added missing SYS_ERXMISC{2,3}_EL1 from the list of handled RAS
registers
- Added some rationale about the advertising of RASv1p1 (Cornelia)
- Picked AB from Catalin (thanks!)
[1] https://lore.kernel.org/kvmarm/20250721101955.535159-1-maz@xxxxxxxxxx
[2] https://lore.kernel.org/kvmarm/20250806165615.1513164-1-maz@xxxxxxxxxx
Marc Zyngier (6):
arm64: Add capability denoting FEAT_RASv1p1
KVM: arm64: Handle RASv1p1 registers
KVM: arm64: Ignore HCR_EL2.FIEN set by L1 guest's EL2
KVM: arm64: Make ID_AA64PFR0_EL1.RAS writable
KVM: arm64: Make ID_AA64PFR1_EL1.RAS_frac writable
KVM: arm64: Get rid of ARM64_FEATURE_MASK()
arch/arm64/include/asm/sysreg.h | 3 -
arch/arm64/kernel/cpufeature.c | 24 ++++++
arch/arm64/kvm/arm.c | 8 +-
arch/arm64/kvm/hyp/vhe/switch.c | 5 +-
arch/arm64/kvm/nested.c | 3 +-
arch/arm64/kvm/sys_regs.c | 75 +++++++++++++------
arch/arm64/tools/cpucaps | 1 +
tools/arch/arm64/include/asm/sysreg.h | 3 -
.../selftests/kvm/arm64/aarch32_id_regs.c | 2 +-
.../selftests/kvm/arm64/debug-exceptions.c | 12 +--
.../testing/selftests/kvm/arm64/no-vgic-v3.c | 4 +-
.../selftests/kvm/arm64/page_fault_test.c | 6 +-
.../testing/selftests/kvm/arm64/set_id_regs.c | 8 +-
.../selftests/kvm/arm64/vpmu_counter_access.c | 2 +-
.../selftests/kvm/lib/arm64/processor.c | 6 +-
15 files changed, 107 insertions(+), 55 deletions(-)
--
2.39.2
