xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

arm64: KVM: Add ARCH_WORKAROUND_2 discovery through ARCH_FEATURES_FUNC_ID

Browse Source 
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>
This commit is contained in:
Marc Zyngier
2018-05-29 13:11:18 +01:00
committed by Catalin Marinas
parent b4f18c063a
commit 5d81f7dc9b
4 changed files with 55 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
arch/arm/include/asm/kvm_host.h
View File

@@ -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) {}