diff options
| author | Amit Daniel Kachhap <[email protected]> | 2019-04-23 10:12:34 +0530 |
|---|---|---|
| committer | Marc Zyngier <[email protected]> | 2019-04-23 08:47:01 +0100 |
| commit | b890d75c4cdc963c96e7774b088120966c23ab8e (patch) | |
| tree | 074dc30015c6ad67703fe9bf5621e32db612f9aa | |
| parent | 43b8e1f08938c0fd3b8924e846dba89863badc2f (diff) | |
KVM: arm64: Add a vcpu flag to control ptrauth for guest
A per vcpu flag is added to check if pointer authentication is
enabled for the vcpu or not. This flag may be enabled according to
the necessary user policies and host capabilities.
This patch also adds a helper to check the flag.
Reviewed-by: Dave Martin <[email protected]>
Signed-off-by: Amit Daniel Kachhap <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Marc Zyngier <[email protected]>
Cc: Christoffer Dall <[email protected]>
Cc: [email protected]
Signed-off-by: Marc Zyngier <[email protected]>
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 7a096fdb333d..7ccac42a91a6 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -355,10 +355,15 @@ struct kvm_vcpu_arch { #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 KVM_ARM64_VCPU_SVE_FINALIZED (1 << 6) /* SVE config completed */ +#define KVM_ARM64_GUEST_HAS_PTRAUTH (1 << 7) /* PTRAUTH exposed to guest */ #define vcpu_has_sve(vcpu) (system_supports_sve() && \ ((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_SVE)) +#define vcpu_has_ptrauth(vcpu) ((system_supports_address_auth() || \ + system_supports_generic_auth()) && \ + ((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_PTRAUTH)) + #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs) /* |