From: Yicong Yang yangyicong@hisilicon.com
Using FEAT_{LS64, LS64_V} instructions in a guest is also controlled by HCRX_EL2.{EnALS, EnASR}. Enable it if guest has related feature.
Signed-off-by: Yicong Yang yangyicong@hisilicon.com --- arch/arm64/include/asm/kvm_emulate.h | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h index df141ae77019..3e000fff1c1d 100644 --- a/arch/arm64/include/asm/kvm_emulate.h +++ b/arch/arm64/include/asm/kvm_emulate.h @@ -628,6 +628,12 @@ static inline void vcpu_set_hcrx(struct kvm_vcpu *vcpu)
if (kvm_has_fpmr(kvm)) vcpu->arch.hcrx_el2 |= HCRX_EL2_EnFPM; + + if (kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64)) + vcpu->arch.hcrx_el2 |= HCRX_EL2_EnALS; + + if (kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64_V)) + vcpu->arch.hcrx_el2 |= HCRX_EL2_EnASR; } } #endif /* __ARM64_KVM_EMULATE_H__ */