diff options
| author | Oliver Upton <oupton@kernel.org> | 2025-11-24 11:01:56 -0800 |
|---|---|---|
| committer | Oliver Upton <oupton@kernel.org> | 2025-12-01 00:44:02 -0800 |
| commit | d5bbb76f447420681abdcfa4ad32344d11188d00 (patch) | |
| tree | 292aa1368deb7e479ecebb910c39a8804b26797d | |
| parent | e4c7dfac2f1ab848ffd356b3e76827ea404bbd94 (diff) | |
KVM: arm64: nv: Expose hardware access flag management to NV guests
Everything is in place to update the access flag at S1 and S2. Expose
support for the access flag flavor of FEAT_HAFDBS to NV guests.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-15-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
| -rw-r--r-- | arch/arm64/kvm/nested.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c index 6495442f400a..88d7dfb44410 100644 --- a/arch/arm64/kvm/nested.c +++ b/arch/arm64/kvm/nested.c @@ -1599,11 +1599,13 @@ u64 limit_nv_id_reg(struct kvm *kvm, u32 reg, u64 val) case SYS_ID_AA64MMFR1_EL1: val &= ~(ID_AA64MMFR1_EL1_CMOW | ID_AA64MMFR1_EL1_nTLBPA | - ID_AA64MMFR1_EL1_ETS | - ID_AA64MMFR1_EL1_HAFDBS); + ID_AA64MMFR1_EL1_ETS); + /* FEAT_E2H0 implies no VHE */ if (test_bit(KVM_ARM_VCPU_HAS_EL2_E2H0, kvm->arch.vcpu_features)) val &= ~ID_AA64MMFR1_EL1_VH; + + val = ID_REG_LIMIT_FIELD_ENUM(val, ID_AA64MMFR1_EL1, HAFDBS, AF); break; case SYS_ID_AA64MMFR2_EL1: |