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| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-05-29 15:11:18 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2018-05-31 20:00:59 +0300 |
| commit | 5d81f7dc9bca4f4963092433e27b508cbe524a32 (patch) | |
| tree | e31e1f9ca381c4bdbe67118b6e2dc79c634bd20c /arch/arm | |
| parent | b4f18c063a13dfb33e3a63fe1844823e19c2265e (diff) | |
| download | linux-5d81f7dc9bca4f4963092433e27b508cbe524a32.tar.xz | |
arm64: KVM: Add ARCH_WORKAROUND_2 discovery through ARCH_FEATURES_FUNC_ID
Now that all our infrastructure is in place, let's expose the
availability of ARCH_WORKAROUND_2 to guests. We take this opportunity
to tidy up a couple of SMCCC constants.
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/kvm_host.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index c7c28c885a19..7001fb871429 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -315,6 +315,18 @@ static inline bool kvm_arm_harden_branch_predictor(void) return false; } +#define KVM_SSBD_UNKNOWN -1 +#define KVM_SSBD_FORCE_DISABLE 0 +#define KVM_SSBD_KERNEL 1 +#define KVM_SSBD_FORCE_ENABLE 2 +#define KVM_SSBD_MITIGATED 3 + +static inline int kvm_arm_have_ssbd(void) +{ + /* No way to detect it yet, pretend it is not there. */ + return KVM_SSBD_UNKNOWN; +} + static inline void kvm_vcpu_load_sysregs(struct kvm_vcpu *vcpu) {} static inline void kvm_vcpu_put_sysregs(struct kvm_vcpu *vcpu) {} |