diff options
| author | Christoffer Dall <christoffer.dall@linaro.org> | 2017-08-04 13:47:18 +0200 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-03-19 10:53:19 +0000 |
| commit | a2465629b62a82b3145dc7ef40ec6c32432cf002 (patch) | |
| tree | e39e588a883ac6e565a9b8214c3e79ef3351c4be /arch/arm64/include/asm/kvm_hyp.h | |
| parent | c16c1131fb1ccc70aac351111388bf23a97024ca (diff) | |
KVM: arm64: Configure c15, PMU, and debug register traps on cpu load/put for VHE
We do not have to change the c15 trap setting on each switch to/from the
guest on VHE systems, because this setting only affects guest EL1/EL0
(and therefore not the VHE host).
The PMU and debug trap configuration can also be done on vcpu load/put
instead, because they don't affect how the VHE host kernel can access the
debug registers while executing KVM kernel code.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/kvm_hyp.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_hyp.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_hyp.h b/arch/arm64/include/asm/kvm_hyp.h index 2b1fda90dde4..949f2e77ae58 100644 --- a/arch/arm64/include/asm/kvm_hyp.h +++ b/arch/arm64/include/asm/kvm_hyp.h @@ -147,6 +147,9 @@ void __fpsimd_save_state(struct user_fpsimd_state *fp_regs); void __fpsimd_restore_state(struct user_fpsimd_state *fp_regs); bool __fpsimd_enabled(void); +void activate_traps_vhe_load(struct kvm_vcpu *vcpu); +void deactivate_traps_vhe_put(void); + u64 __guest_enter(struct kvm_vcpu *vcpu, struct kvm_cpu_context *host_ctxt); void __noreturn __hyp_do_panic(unsigned long, ...); |