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| author | Dave Martin <Dave.Martin@arm.com> | 2018-09-28 14:39:12 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2019-03-29 14:41:52 +0000 |
| commit | 1765edbab16e3dc73367bda04e45337cea3e51a0 (patch) | |
| tree | ac049c39dd9d23992d0e35c1aab25b0ea0c8a178 /arch/arm64/include/asm/kvm_host.h | |
| parent | 0495067420f352a0b8ed37ee412d7dd8e7b95c61 (diff) | |
| download | linux-1765edbab16e3dc73367bda04e45337cea3e51a0.tar.bz2 | |
KVM: arm64: Add a vcpu flag to control SVE visibility for the guest
Since SVE will be enabled or disabled on a per-vcpu basis, a flag
is needed in order to track which vcpus have it enabled.
This patch adds a suitable flag and a helper for checking it.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: zhang.lei <zhang.lei@jp.fujitsu.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/kvm_host.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 6d10100ff870..ad4f7f004498 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -328,6 +328,10 @@ struct kvm_vcpu_arch { #define KVM_ARM64_FP_HOST (1 << 2) /* host FP regs loaded */ #define KVM_ARM64_HOST_SVE_IN_USE (1 << 3) /* backup for host TIF_SVE */ #define KVM_ARM64_HOST_SVE_ENABLED (1 << 4) /* SVE enabled for EL0 */ +#define KVM_ARM64_GUEST_HAS_SVE (1 << 5) /* SVE exposed to guest */ + +#define vcpu_has_sve(vcpu) (system_supports_sve() && \ + ((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_SVE)) #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs) |