* [GIT PULL] KVM/arm64 changes for 6.17, take #2
@ 2025-08-28 20:00 Oliver Upton
2025-08-29 17:41 ` Paolo Bonzini
0 siblings, 1 reply; 2+ messages in thread
From: Oliver Upton @ 2025-08-28 20:00 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: Marc Zyngier, kvm, kvmarm
Hi Paolo,
Unfortunately work had me sidelined for an extended period of time, so
after much delay here is a pile of fixes for 6.17. This is a bit larger
than I would like, but the handling of on-CPU sysregs has had multiple ugly
bugs and a localized fix would just be unnecessary churn.
Details in the tag; please pull.
Thanks,
Oliver
The following changes since commit 18ec25dd0e97653cdb576bb1750c31acf2513ea7:
KVM: arm64: selftests: Add FEAT_RAS EL2 registers to get-reg-list (2025-07-28 08:28:05 -0700)
are available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git/ tags/kvmarm-fixes-6.17-1
for you to fetch changes up to ee372e645178802be7cb35263de941db7b2c5354:
KVM: arm64: nv: Fix ATS12 handling of single-stage translation (2025-08-28 12:44:42 -0700)
----------------------------------------------------------------
KVM/arm64 changes for 6.17, take #2
- Correctly handle 'invariant' system registers for protected VMs
- Improved handling of VNCR data aborts, including external aborts
- Fixes for handling of FEAT_RAS for NV guests, providing a sane
fault context during SEA injection and preventing the use of
RASv1p1 fault injection hardware
- Ensure that page table destruction when a VM is destroyed gives an
opportunity to reschedule
- Large fix to KVM's infrastructure for managing guest context loaded
on the CPU, addressing issues where the output of AT emulation
doesn't get reflected to the guest
- Fix AT S12 emulation to actually perform stage-2 translation when
necessary
- Avoid attempting vLPI irqbypass when GICv4 has been explicitly
disabled for a VM
- Minor KVM + selftest fixes
----------------------------------------------------------------
Arnd Bergmann (1):
kvm: arm64: use BUG() instead of BUG_ON(1)
Fuad Tabba (3):
KVM: arm64: Handle AIDR_EL1 and REVIDR_EL1 in host for protected VMs
KVM: arm64: Sync protected guest VBAR_EL1 on injecting an undef exception
arm64: vgic-v2: Fix guest endianness check in hVHE mode
Marc Zyngier (14):
KVM: arm64: nv: Properly check ESR_EL2.VNCR on taking a VNCR_EL2 related fault
KVM: arm64: selftest: Add standalone test checking for KVM's own UUID
KVM: arm64: Correctly populate FAR_EL2 on nested SEA injection
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()
KVM: arm64: Check for SYSREGS_ON_CPU before accessing the 32bit state
KVM: arm64: Simplify sysreg access on exception delivery
KVM: arm64: Fix vcpu_{read,write}_sys_reg() accessors
KVM: arm64: Remove __vcpu_{read,write}_sys_reg_{from,to}_cpu()
KVM: arm64: nv: Fix ATS12 handling of single-stage translation
Mark Brown (1):
KVM: arm64: selftests: Sync ID_AA64MMFR3_EL1 in set_id_regs
Oliver Upton (1):
KVM: arm64: nv: Handle SEAs due to VNCR redirection
Raghavendra Rao Ananta (3):
KVM: arm64: Don't attempt vLPI mappings when vPE allocation is disabled
KVM: arm64: Split kvm_pgtable_stage2_destroy()
KVM: arm64: Reschedule as needed when destroying the stage-2 page-tables
arch/arm64/include/asm/kvm_host.h | 111 +-----
arch/arm64/include/asm/kvm_mmu.h | 1 +
arch/arm64/include/asm/kvm_pgtable.h | 30 ++
arch/arm64/include/asm/kvm_pkvm.h | 4 +-
arch/arm64/include/asm/kvm_ras.h | 25 --
arch/arm64/include/asm/sysreg.h | 3 -
arch/arm64/kernel/cpufeature.c | 24 ++
arch/arm64/kvm/arm.c | 8 +-
arch/arm64/kvm/at.c | 6 +-
arch/arm64/kvm/emulate-nested.c | 2 +-
arch/arm64/kvm/hyp/exception.c | 20 +-
arch/arm64/kvm/hyp/nvhe/list_debug.c | 2 +-
arch/arm64/kvm/hyp/nvhe/sys_regs.c | 5 +
arch/arm64/kvm/hyp/pgtable.c | 25 +-
arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c | 2 +-
arch/arm64/kvm/hyp/vhe/switch.c | 5 +-
arch/arm64/kvm/mmu.c | 65 +++-
arch/arm64/kvm/nested.c | 5 +-
arch/arm64/kvm/pkvm.c | 11 +-
arch/arm64/kvm/sys_regs.c | 419 ++++++++++++++-------
arch/arm64/kvm/vgic/vgic-mmio-v3.c | 8 +
arch/arm64/kvm/vgic/vgic-mmio.c | 2 +-
arch/arm64/kvm/vgic/vgic.h | 10 +-
arch/arm64/tools/cpucaps | 1 +
tools/arch/arm64/include/asm/sysreg.h | 3 -
tools/testing/selftests/kvm/Makefile.kvm | 1 +
.../testing/selftests/kvm/arm64/aarch32_id_regs.c | 2 +-
.../testing/selftests/kvm/arm64/debug-exceptions.c | 12 +-
tools/testing/selftests/kvm/arm64/kvm-uuid.c | 70 ++++
tools/testing/selftests/kvm/arm64/no-vgic-v3.c | 4 +-
.../testing/selftests/kvm/arm64/page_fault_test.c | 6 +-
tools/testing/selftests/kvm/arm64/set_id_regs.c | 9 +-
.../selftests/kvm/arm64/vpmu_counter_access.c | 2 +-
tools/testing/selftests/kvm/lib/arm64/processor.c | 6 +-
34 files changed, 560 insertions(+), 349 deletions(-)
delete mode 100644 arch/arm64/include/asm/kvm_ras.h
create mode 100644 tools/testing/selftests/kvm/arm64/kvm-uuid.c
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [GIT PULL] KVM/arm64 changes for 6.17, take #2
2025-08-28 20:00 [GIT PULL] KVM/arm64 changes for 6.17, take #2 Oliver Upton
@ 2025-08-29 17:41 ` Paolo Bonzini
0 siblings, 0 replies; 2+ messages in thread
From: Paolo Bonzini @ 2025-08-29 17:41 UTC (permalink / raw)
To: Oliver Upton; +Cc: Marc Zyngier, kvm, kvmarm
On Thu, Aug 28, 2025 at 10:00 PM Oliver Upton <oliver.upton@linux.dev> wrote:
>
> Hi Paolo,
>
> Unfortunately work had me sidelined for an extended period of time, so
> after much delay here is a pile of fixes for 6.17. This is a bit larger
> than I would like, but the handling of on-CPU sysregs has had multiple ugly
> bugs and a localized fix would just be unnecessary churn.
It's fine, I added some extra context from the commit message in my
pull request to Linus.
Thanks,
Paolo
> Details in the tag; please pull.
>
> Thanks,
> Oliver
>
> The following changes since commit 18ec25dd0e97653cdb576bb1750c31acf2513ea7:
>
> KVM: arm64: selftests: Add FEAT_RAS EL2 registers to get-reg-list (2025-07-28 08:28:05 -0700)
>
> are available in the Git repository at:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git/ tags/kvmarm-fixes-6.17-1
>
> for you to fetch changes up to ee372e645178802be7cb35263de941db7b2c5354:
>
> KVM: arm64: nv: Fix ATS12 handling of single-stage translation (2025-08-28 12:44:42 -0700)
>
> ----------------------------------------------------------------
> KVM/arm64 changes for 6.17, take #2
>
> - Correctly handle 'invariant' system registers for protected VMs
>
> - Improved handling of VNCR data aborts, including external aborts
>
> - Fixes for handling of FEAT_RAS for NV guests, providing a sane
> fault context during SEA injection and preventing the use of
> RASv1p1 fault injection hardware
>
> - Ensure that page table destruction when a VM is destroyed gives an
> opportunity to reschedule
>
> - Large fix to KVM's infrastructure for managing guest context loaded
> on the CPU, addressing issues where the output of AT emulation
> doesn't get reflected to the guest
>
> - Fix AT S12 emulation to actually perform stage-2 translation when
> necessary
>
> - Avoid attempting vLPI irqbypass when GICv4 has been explicitly
> disabled for a VM
>
> - Minor KVM + selftest fixes
>
> ----------------------------------------------------------------
> Arnd Bergmann (1):
> kvm: arm64: use BUG() instead of BUG_ON(1)
>
> Fuad Tabba (3):
> KVM: arm64: Handle AIDR_EL1 and REVIDR_EL1 in host for protected VMs
> KVM: arm64: Sync protected guest VBAR_EL1 on injecting an undef exception
> arm64: vgic-v2: Fix guest endianness check in hVHE mode
>
> Marc Zyngier (14):
> KVM: arm64: nv: Properly check ESR_EL2.VNCR on taking a VNCR_EL2 related fault
> KVM: arm64: selftest: Add standalone test checking for KVM's own UUID
> KVM: arm64: Correctly populate FAR_EL2 on nested SEA injection
> 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()
> KVM: arm64: Check for SYSREGS_ON_CPU before accessing the 32bit state
> KVM: arm64: Simplify sysreg access on exception delivery
> KVM: arm64: Fix vcpu_{read,write}_sys_reg() accessors
> KVM: arm64: Remove __vcpu_{read,write}_sys_reg_{from,to}_cpu()
> KVM: arm64: nv: Fix ATS12 handling of single-stage translation
>
> Mark Brown (1):
> KVM: arm64: selftests: Sync ID_AA64MMFR3_EL1 in set_id_regs
>
> Oliver Upton (1):
> KVM: arm64: nv: Handle SEAs due to VNCR redirection
>
> Raghavendra Rao Ananta (3):
> KVM: arm64: Don't attempt vLPI mappings when vPE allocation is disabled
> KVM: arm64: Split kvm_pgtable_stage2_destroy()
> KVM: arm64: Reschedule as needed when destroying the stage-2 page-tables
>
> arch/arm64/include/asm/kvm_host.h | 111 +-----
> arch/arm64/include/asm/kvm_mmu.h | 1 +
> arch/arm64/include/asm/kvm_pgtable.h | 30 ++
> arch/arm64/include/asm/kvm_pkvm.h | 4 +-
> arch/arm64/include/asm/kvm_ras.h | 25 --
> arch/arm64/include/asm/sysreg.h | 3 -
> arch/arm64/kernel/cpufeature.c | 24 ++
> arch/arm64/kvm/arm.c | 8 +-
> arch/arm64/kvm/at.c | 6 +-
> arch/arm64/kvm/emulate-nested.c | 2 +-
> arch/arm64/kvm/hyp/exception.c | 20 +-
> arch/arm64/kvm/hyp/nvhe/list_debug.c | 2 +-
> arch/arm64/kvm/hyp/nvhe/sys_regs.c | 5 +
> arch/arm64/kvm/hyp/pgtable.c | 25 +-
> arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c | 2 +-
> arch/arm64/kvm/hyp/vhe/switch.c | 5 +-
> arch/arm64/kvm/mmu.c | 65 +++-
> arch/arm64/kvm/nested.c | 5 +-
> arch/arm64/kvm/pkvm.c | 11 +-
> arch/arm64/kvm/sys_regs.c | 419 ++++++++++++++-------
> arch/arm64/kvm/vgic/vgic-mmio-v3.c | 8 +
> arch/arm64/kvm/vgic/vgic-mmio.c | 2 +-
> arch/arm64/kvm/vgic/vgic.h | 10 +-
> arch/arm64/tools/cpucaps | 1 +
> tools/arch/arm64/include/asm/sysreg.h | 3 -
> tools/testing/selftests/kvm/Makefile.kvm | 1 +
> .../testing/selftests/kvm/arm64/aarch32_id_regs.c | 2 +-
> .../testing/selftests/kvm/arm64/debug-exceptions.c | 12 +-
> tools/testing/selftests/kvm/arm64/kvm-uuid.c | 70 ++++
> tools/testing/selftests/kvm/arm64/no-vgic-v3.c | 4 +-
> .../testing/selftests/kvm/arm64/page_fault_test.c | 6 +-
> tools/testing/selftests/kvm/arm64/set_id_regs.c | 9 +-
> .../selftests/kvm/arm64/vpmu_counter_access.c | 2 +-
> tools/testing/selftests/kvm/lib/arm64/processor.c | 6 +-
> 34 files changed, 560 insertions(+), 349 deletions(-)
> delete mode 100644 arch/arm64/include/asm/kvm_ras.h
> create mode 100644 tools/testing/selftests/kvm/arm64/kvm-uuid.c
>
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