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KVM: arm/arm64: vgic-v2: Make GICD_SGIR quicker to hit

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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>
This commit is contained in:
Marc Zyngier 2016-02-09 17:37:39 +00:00
parent cc1daf0b82
commit 667a87a928
1 changed files with 5 additions and 5 deletions
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10
virt/kvm/arm/vgic-v2-emul.c
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@ -320,6 +320,11 @@ static bool handle_mmio_sgi_clear(struct kvm_vcpu *vcpu,
} }
static const struct vgic_io_range vgic_dist_ranges[] = { 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, .base = GIC_DIST_CTRL,
.len = 12, .len = 12,
@ -386,11 +391,6 @@ static const struct vgic_io_range vgic_dist_ranges[] = {
.bits_per_irq = 2, .bits_per_irq = 2,
.handle_mmio = handle_mmio_cfg_reg, .handle_mmio = handle_mmio_cfg_reg,
}, },
{
.base = GIC_DIST_SOFTINT,
.len = 4,
.handle_mmio = handle_mmio_sgi_reg,
},
{ {
.base = GIC_DIST_SGI_PENDING_CLEAR, .base = GIC_DIST_SGI_PENDING_CLEAR,
.len = VGIC_NR_SGIS, .len = VGIC_NR_SGIS,