diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2015-10-26 11:34:09 +0300 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2015-12-14 14:30:41 +0300 |
| commit | c13d1683df16db16c91372177ca10c31677b5ed5 (patch) | |
| tree | c33ebab7d9dff4a45664c47edda215838ed5c5b7 /arch/arm64/kvm/hyp/hyp.h | |
| parent | be901e9b15cd2c8e48dc089b4655ea4a076e66fd (diff) | |
| download | linux-c13d1683df16db16c91372177ca10c31677b5ed5.tar.xz | |
arm64: KVM: Implement fpsimd save/restore
Implement the fpsimd save restore, keeping the lazy part in
assembler (as returning to C would be overkill).
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64/kvm/hyp/hyp.h')
| -rw-r--r-- | arch/arm64/kvm/hyp/hyp.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/hyp.h b/arch/arm64/kvm/hyp/hyp.h index 73419a769112..70d4f696c862 100644 --- 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__ */ |