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| author |   Marc Zyngier <maz@kernel.org> | 2022-05-04 09:42:16 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-05-04 09:42:16 +0100 |
| commit | b2c4caf3316ce535af333bbd2cd99ad96f991074 (patch) | |
| tree | 33bd05ec99caab3a0cab27f7f65f2fed2b64d9f2 /arch/arm64/kvm/sys_regs.c | |
| parent | Merge remote-tracking branch 'arm64/for-next/sme' into kvmarm-master/next (diff) | |
| parent | KVM: arm64: Expose the WFXT feature to guests (diff) | |
| download | wireguard-linux-b2c4caf3316ce535af333bbd2cd99ad96f991074.tar.xz wireguard-linux-b2c4caf3316ce535af333bbd2cd99ad96f991074.zip | |
Merge branch kvm-arm64/wfxt into kvmarm-master/next
* kvm-arm64/wfxt:
: .
: Add support for the WFET/WFIT instructions that provide the same
: service as WFE/WFI, only with a timeout.
: .
KVM: arm64: Expose the WFXT feature to guests
KVM: arm64: Offer early resume for non-blocking WFxT instructions
KVM: arm64: Handle blocking WFIT instruction
KVM: arm64: Introduce kvm_counter_compute_delta() helper
KVM: arm64: Simplify kvm_cpu_has_pending_timer()
arm64: Use WFxT for __delay() when possible
arm64: Add wfet()/wfit() helpers
arm64: Add HWCAP advertising FEAT_WFXT
arm64: Add RV and RN fields for ESR_ELx_WFx_ISS
arm64: Expand ESR_ELx_WFx_ISS_TI to match its ARMv8.7 definition
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch/arm64/kvm/sys_regs.c')
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 689e53dd4cb1..f455e53dd59b 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1146,6 +1146,8 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu, if (!vcpu_has_ptrauth(vcpu)) val &= ~(ARM64_FEATURE_MASK(ID_AA64ISAR2_APA3) | ARM64_FEATURE_MASK(ID_AA64ISAR2_GPA3)); + if (!cpus_have_final_cap(ARM64_HAS_WFXT)) + val &= ~ARM64_FEATURE_MASK(ID_AA64ISAR2_WFXT); break; case SYS_ID_AA64DFR0_EL1: /* Limit debug to ARMv8.0 */ |