diff options
| author | Christoffer Dall <christoffer.dall@linaro.org> | 2017-10-03 17:06:15 +0200 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-03-19 10:53:19 +0000 |
| commit | b7787e6666061aea02be7ce084fe13c336acd0cf (patch) | |
| tree | 29b4a9c558e35016d765f4d494e3ab10b89b8e01 /arch/arm64 | |
| parent | a2465629b62a82b3145dc7ef40ec6c32432cf002 (diff) | |
| download | linux-b7787e6666061aea02be7ce084fe13c336acd0cf.tar.bz2 | |
KVM: arm64: Cleanup __activate_traps and __deactive_traps for VHE and non-VHE
To make the code more readable and to avoid the overhead of a function
call, let's get rid of a pair of the alternative function selectors and
explicitly call the VHE and non-VHE functions using the has_vhe() static
key based selector instead, telling the compiler to try to inline the
static function if it can.
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')
| -rw-r--r-- | arch/arm64/kvm/hyp/switch.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c index eab433fa1442..67c66b4e237e 100644 --- a/arch/arm64/kvm/hyp/switch.c +++ b/arch/arm64/kvm/hyp/switch.c @@ -86,7 +86,7 @@ static void __hyp_text __deactivate_traps_common(void) write_sysreg(0, pmuserenr_el0); } -static void __hyp_text __activate_traps_vhe(struct kvm_vcpu *vcpu) +static void activate_traps_vhe(struct kvm_vcpu *vcpu) { u64 val; @@ -109,10 +109,6 @@ static void __hyp_text __activate_traps_nvhe(struct kvm_vcpu *vcpu) write_sysreg(val, cptr_el2); } -static hyp_alternate_select(__activate_traps_arch, - __activate_traps_nvhe, __activate_traps_vhe, - ARM64_HAS_VIRT_HOST_EXTN); - static void __hyp_text __activate_traps(struct kvm_vcpu *vcpu) { u64 hcr = vcpu->arch.hcr_el2; @@ -123,10 +119,13 @@ static void __hyp_text __activate_traps(struct kvm_vcpu *vcpu) write_sysreg_s(vcpu->arch.vsesr_el2, SYS_VSESR_EL2); __activate_traps_fpsimd32(vcpu); - __activate_traps_arch()(vcpu); + if (has_vhe()) + activate_traps_vhe(vcpu); + else + __activate_traps_nvhe(vcpu); } -static void __hyp_text __deactivate_traps_vhe(void) +static void deactivate_traps_vhe(void) { extern char vectors[]; /* kernel exception vectors */ write_sysreg(HCR_HOST_VHE_FLAGS, hcr_el2); @@ -148,10 +147,6 @@ static void __hyp_text __deactivate_traps_nvhe(void) write_sysreg(CPTR_EL2_DEFAULT, cptr_el2); } -static hyp_alternate_select(__deactivate_traps_arch, - __deactivate_traps_nvhe, __deactivate_traps_vhe, - ARM64_HAS_VIRT_HOST_EXTN); - static void __hyp_text __deactivate_traps(struct kvm_vcpu *vcpu) { /* @@ -163,7 +158,10 @@ static void __hyp_text __deactivate_traps(struct kvm_vcpu *vcpu) if (vcpu->arch.hcr_el2 & HCR_VSE) vcpu->arch.hcr_el2 = read_sysreg(hcr_el2); - __deactivate_traps_arch()(); + if (has_vhe()) + deactivate_traps_vhe(); + else + __deactivate_traps_nvhe(); } void activate_traps_vhe_load(struct kvm_vcpu *vcpu) |