arm64: KVM: Implement fpsimd save/restore

[firefly-linux-kernel-4.4.55.git] / arch / arm64 / kvm / hyp / hyp.h

diff --git a/arch/arm64/kvm/hyp/hyp.h b/arch/arm64/kvm/hyp/hyp.h
index 73419a769112fbc01c822e063e57fd77f12c6341..70d4f696c8620fec977b10d19926798380979649 100644 (file)
--- a/arch/arm64/kvm/hyp/hyp.h
+++ b/arch/arm64/kvm/hyp/hyp.h
@@ -76,6 +76,13 @@ void __debug_restore_state(struct kvm_vcpu *vcpu,
 void __debug_cond_save_host_state(struct kvm_vcpu *vcpu);
 void __debug_cond_restore_host_state(struct kvm_vcpu *vcpu);
 
+void __fpsimd_save_state(struct user_fpsimd_state *fp_regs);
+void __fpsimd_restore_state(struct user_fpsimd_state *fp_regs);
+static inline bool __fpsimd_enabled(void)
+{
+       return !(read_sysreg(cptr_el2) & CPTR_EL2_TFP);
+}
+
 u64 __guest_enter(struct kvm_vcpu *vcpu, struct kvm_cpu_context *host_ctxt);
 
 #endif /* __ARM64_KVM_HYP_H__ */