diff options
| author | Fuad Tabba <tabba@google.com> | 2023-07-24 13:38:26 +0100 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2023-07-26 17:08:29 +0000 |
| commit | 90ae31c65d5afdd0864017c9354247ddb601917f (patch) | |
| tree | de79ba18050f8db891b99cc05f5b2cfdcee8c5e8 | |
| parent | 380624d4358b0150804d279c20632555e453bc1f (diff) | |
KVM: arm64: Helper to write to appropriate feature trap register based on mode
Factor out the code that decides whether to write to the feature
trap registers, CPTR_EL2 or CPACR_EL1, based on the KVM mode,
i.e., (h)VHE or nVHE.
This function will be used in the subsequent patch.
No functional change intended.
Signed-off-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230724123829.2929609-6-tabba@google.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
| -rw-r--r-- | arch/arm64/include/asm/kvm_emulate.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h index efc0b45d79c3..f5941f6dce49 100644 --- a/arch/arm64/include/asm/kvm_emulate.h +++ b/arch/arm64/include/asm/kvm_emulate.h @@ -571,6 +571,14 @@ static inline bool vcpu_has_feature(struct kvm_vcpu *vcpu, int feature) return test_bit(feature, vcpu->arch.features); } +static __always_inline void kvm_write_cptr_el2(u64 val) +{ + if (has_vhe() || has_hvhe()) + write_sysreg(val, cpacr_el1); + else + write_sysreg(val, cptr_el2); +} + static __always_inline u64 kvm_get_reset_cptr_el2(struct kvm_vcpu *vcpu) { u64 val; @@ -597,9 +605,6 @@ static __always_inline void kvm_reset_cptr_el2(struct kvm_vcpu *vcpu) { u64 val = kvm_get_reset_cptr_el2(vcpu); - if (has_vhe() || has_hvhe()) - write_sysreg(val, cpacr_el1); - else - write_sysreg(val, cptr_el2); + kvm_write_cptr_el2(val); } #endif /* __ARM64_KVM_EMULATE_H__ */ |