diff options
| author | Christoffer Dall <christoffer.dall@linaro.org> | 2017-08-03 12:09:05 +0200 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-03-19 10:53:10 +0000 |
| commit | 3df59d8dd3c2526b33d51af9e6f66e61262de71b (patch) | |
| tree | 26679eaf7ef8824f7fb535702ecc0c6af0c20eae /virt/kvm/arm/arm.c | |
| parent | 35a84dec00a707aed97c1ff9ebb1cd1eb67c7052 (diff) | |
KVM: arm/arm64: Get rid of vcpu->arch.irq_lines
We currently have a separate read-modify-write of the HCR_EL2 on entry
to the guest for the sole purpose of setting the VF and VI bits, if set.
Since this is most rarely the case (only when using userspace IRQ chip
and interrupts are in flight), let's get rid of this operation and
instead modify the bits in the vcpu->arch.hcr[_el2] directly when
needed.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt/kvm/arm/arm.c')
| -rw-r--r-- | virt/kvm/arm/arm.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 932e61858c55..49d13510e9c2 100644 --- a/virt/kvm/arm/arm.c +++ b/virt/kvm/arm/arm.c @@ -420,7 +420,8 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, */ int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) { - return ((!!v->arch.irq_lines || kvm_vgic_vcpu_pending_irq(v)) + bool irq_lines = *vcpu_hcr(v) & (HCR_VI | HCR_VF); + return ((irq_lines || kvm_vgic_vcpu_pending_irq(v)) && !v->arch.power_off && !v->arch.pause); } @@ -814,18 +815,18 @@ static int vcpu_interrupt_line(struct kvm_vcpu *vcpu, int number, bool level) { int bit_index; bool set; - unsigned long *ptr; + unsigned long *hcr; if (number == KVM_ARM_IRQ_CPU_IRQ) bit_index = __ffs(HCR_VI); else /* KVM_ARM_IRQ_CPU_FIQ */ bit_index = __ffs(HCR_VF); - ptr = (unsigned long *)&vcpu->arch.irq_lines; + hcr = vcpu_hcr(vcpu); if (level) - set = test_and_set_bit(bit_index, ptr); + set = test_and_set_bit(bit_index, hcr); else - set = test_and_clear_bit(bit_index, ptr); + set = test_and_clear_bit(bit_index, hcr); /* * If we didn't change anything, no need to wake up or kick other CPUs |