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authorMarc Zyngier <marc.zyngier@arm.com>2013-08-29 11:08:22 +0100
committerGleb Natapov <gleb@redhat.com>2013-08-30 16:03:07 +0300
commit986af8e0789a41ac4844e6eefed4a33e86524918 (patch)
tree1f4471fa52051d9fce4077c53bbc25ad0debda62 /virt
parenta9f6cf965e00dd3370229417675eb0127d580f96 (diff)
downloadlinux-986af8e0789a41ac4844e6eefed4a33e86524918.tar.gz
ARM: KVM: vgic: simplify vgic_get_target_reg
vgic_get_target_reg is quite complicated, for no good reason. Actually, it is fairly easy to write it in a much more efficient way by using the target CPU array instead of the bitmap. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/vgic.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 17c5ac7d10e..a2d478aec04 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -432,19 +432,13 @@ static bool handle_mmio_priority_reg(struct kvm_vcpu *vcpu,
static u32 vgic_get_target_reg(struct kvm *kvm, int irq)
{
struct vgic_dist *dist = &kvm->arch.vgic;
- struct kvm_vcpu *vcpu;
- int i, c;
- unsigned long *bmap;
+ int i;
u32 val = 0;
irq -= VGIC_NR_PRIVATE_IRQS;
- kvm_for_each_vcpu(c, vcpu, kvm) {
- bmap = vgic_bitmap_get_shared_map(&dist->irq_spi_target[c]);
- for (i = 0; i < GICD_IRQS_PER_ITARGETSR; i++)
- if (test_bit(irq + i, bmap))
- val |= 1 << (c + i * 8);
- }
+ for (i = 0; i < GICD_IRQS_PER_ITARGETSR; i++)
+ val |= 1 << (dist->irq_spi_cpu[irq + i] + i * 8);
return val;
}