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authorMarc Zyngier <marc.zyngier@arm.com>2016-02-09 17:37:39 +0000
committerMarc Zyngier <marc.zyngier@arm.com>2016-03-09 04:24:03 +0000
commit667a87a928c9e1939b1a518be0d62b24378c1fe8 (patch)
tree9b17459c7a7bb8c26329381a32aa6088937a248c /virt/kvm
parentcc1daf0b82f12040065bb1a77dd7945b9ef821f8 (diff)
downloadlinux-667a87a928c9e1939b1a518be0d62b24378c1fe8.tar.gz
KVM: arm/arm64: vgic-v2: Make GICD_SGIR quicker to hit
The GICD_SGIR register lives a long way from the beginning of the handler array, which is searched linearly. As this is hit pretty often, let's move it up. This saves us some precious cycles when the guest is generating IPIs. Acked-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-v2-emul.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/virt/kvm/arm/vgic-v2-emul.c b/virt/kvm/arm/vgic-v2-emul.c
index 13907970d11c..1b0bee095427 100644
--- a/virt/kvm/arm/vgic-v2-emul.c
+++ b/virt/kvm/arm/vgic-v2-emul.c
@@ -321,6 +321,11 @@ static bool handle_mmio_sgi_clear(struct kvm_vcpu *vcpu,
static const struct vgic_io_range vgic_dist_ranges[] = {
{
+ .base = GIC_DIST_SOFTINT,
+ .len = 4,
+ .handle_mmio = handle_mmio_sgi_reg,
+ },
+ {
.base = GIC_DIST_CTRL,
.len = 12,
.bits_per_irq = 0,
@@ -387,11 +392,6 @@ static const struct vgic_io_range vgic_dist_ranges[] = {
.handle_mmio = handle_mmio_cfg_reg,
},
{
- .base = GIC_DIST_SOFTINT,
- .len = 4,
- .handle_mmio = handle_mmio_sgi_reg,
- },
- {
.base = GIC_DIST_SGI_PENDING_CLEAR,
.len = VGIC_NR_SGIS,
.handle_mmio = handle_mmio_sgi_clear,