improve loop performance of vgic_get_target_reg and make it
consistent with vgic_set_target_reg. In current implementation,
vgic only sets and distributes interrupts to specific target cpu
interface.
Signed-off-by: Bo Zhao <zhaobo@xxxxxxxxxx>
---
arch/arm/kvm/vgic.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/arch/arm/kvm/vgic.c b/arch/arm/kvm/vgic.c
index 17c5ac7..e6eb36c 100644
--- a/arch/arm/kvm/vgic.c
+++ b/arch/arm/kvm/vgic.c
@@ -439,11 +439,14 @@ static u32 vgic_get_target_reg(struct kvm *kvm, int irq)
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))
+ for (i = 0; i < GICD_IRQS_PER_ITARGETSR; i++) {
+ kvm_for_each_vcpu(c, vcpu, kvm) {
+ bmap = vgic_bitmap_get_shared_map(&dist->irq_spi_target[c]);
+ if (test_bit(irq + i, bmap)) {
val |= 1 << (c + i * 8);
+ break;
+ }
+ }
}
return val;
--
1.7.10.4
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