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authorMarc Zyngier <marc.zyngier@arm.com>2016-02-17 10:25:05 +0000
committerMarc Zyngier <marc.zyngier@arm.com>2016-03-09 04:24:04 +0000
commit1b8e83c04ee2c05c0cd0d304c4b389adf24ebe7f (patch)
tree8b92402c42a91ad052a6393eee6294dc92b0f20a /virt/kvm
parent667a87a928c9e1939b1a518be0d62b24378c1fe8 (diff)
downloadlinux-1b8e83c04ee2c05c0cd0d304c4b389adf24ebe7f.tar.gz
arm64: KVM: vgic-v3: Avoid accessing ICH registers
Just like on GICv2, we're a bit hammer-happy with GICv3, and access them more often than we should. Adopt a policy similar to what we do for GICv2, only save/restoring the minimal set of registers. As we don't access the registers linearly anymore (we may skip some), the convoluted accessors become slightly simpler, and we can drop the ugly indexing macro that tended to confuse the reviewers. Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt/kvm')
-rw-r--r--virt/kvm/arm/vgic-v3.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/virt/kvm/arm/vgic-v3.c b/virt/kvm/arm/vgic-v3.c
index 453eafd4dd6e..11b5ff6ce81c 100644
--- a/virt/kvm/arm/vgic-v3.c
+++ b/virt/kvm/arm/vgic-v3.c
@@ -42,7 +42,7 @@ static u32 ich_vtr_el2;
static struct vgic_lr vgic_v3_get_lr(const struct kvm_vcpu *vcpu, int lr)
{
struct vgic_lr lr_desc;
- u64 val = vcpu->arch.vgic_cpu.vgic_v3.vgic_lr[VGIC_V3_LR_INDEX(lr)];
+ u64 val = vcpu->arch.vgic_cpu.vgic_v3.vgic_lr[lr];
if (vcpu->kvm->arch.vgic.vgic_model == KVM_DEV_TYPE_ARM_VGIC_V3)
lr_desc.irq = val & ICH_LR_VIRTUALID_MASK;
@@ -106,7 +106,7 @@ static void vgic_v3_set_lr(struct kvm_vcpu *vcpu, int lr,
lr_val |= ((u64)lr_desc.hwirq) << ICH_LR_PHYS_ID_SHIFT;
}
- vcpu->arch.vgic_cpu.vgic_v3.vgic_lr[VGIC_V3_LR_INDEX(lr)] = lr_val;
+ vcpu->arch.vgic_cpu.vgic_v3.vgic_lr[lr] = lr_val;
if (!(lr_desc.state & LR_STATE_MASK))
vcpu->arch.vgic_cpu.vgic_v3.vgic_elrsr |= (1U << lr);