Commit b890d75c authored by Amit Daniel Kachhap's avatar Amit Daniel Kachhap Committed by Marc Zyngier

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: default avatarDave Martin <Dave.Martin@arm.com>
Signed-off-by: default avatarAmit Daniel Kachhap <amit.kachhap@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoffer Dall <christoffer.dall@arm.com>
Cc: kvmarm@lists.cs.columbia.edu
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent 43b8e1f0
...@@ -355,10 +355,15 @@ struct kvm_vcpu_arch { ...@@ -355,10 +355,15 @@ struct kvm_vcpu_arch {
#define KVM_ARM64_HOST_SVE_ENABLED (1 << 4) /* SVE enabled for EL0 */ #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_GUEST_HAS_SVE (1 << 5) /* SVE exposed to guest */
#define KVM_ARM64_VCPU_SVE_FINALIZED (1 << 6) /* SVE config completed */ #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() && \ #define vcpu_has_sve(vcpu) (system_supports_sve() && \
((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_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) #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs)
/* /*
......
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