Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
KVM: arm64: Enable FEAT_{LS64, LS64_V} in the supported guest
Using FEAT_{LS64, LS64_V} instructions in a guest is also controlled
by HCRX_EL2.{EnALS, EnASR}. Enable it if guest has related feature.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Oliver Upton <oupton@kernel.org>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Will Deacon <will@kernel.org>
authored by
Yicong Yang
and committed by
Will Deacon
151b92c9
dea58da4
+6
+6
arch/arm64/include/asm/kvm_emulate.h
+6
arch/arm64/include/asm/kvm_emulate.h
···
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if (kvm_has_sctlr2(kvm))
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vcpu->arch.hcrx_el2 |= HCRX_EL2_SCTLR2En;
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+
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if (kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64))
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vcpu->arch.hcrx_el2 |= HCRX_EL2_EnALS;
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if (kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64_V))
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vcpu->arch.hcrx_el2 |= HCRX_EL2_EnASR;
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}
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}
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#endif /* __ARM64_KVM_EMULATE_H__ */