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Commit 667a87a9 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

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: default avatarChristoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent cc1daf0b

virt/kvm/arm/vgic-v2-emul.c

+5 −5
Original line number Diff line number Diff line
@@ -320,6 +320,11 @@ 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,
@@ -386,11 +391,6 @@ static const struct vgic_io_range vgic_dist_ranges[] = { 
		.bits_per_irq	= 2,

		.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,