From 8d266f6b2c5c3d2d0da42f1e40ba1fb2ac8fdf1a Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Thu, 18 Apr 2013 11:36:28 +0200 Subject: [PATCH] VMX: Use posted interrupt to deliver virutal interrupt Deliver virtual interrupt through posted way if posted interrupt is enabled. Signed-off-by: Yang Zhang Reviewed-by: Jun Nakajima Acked-by: Keir Fraser Acked-by: George Dunlap (from a release perspective) --- xen/arch/x86/hvm/vlapic.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/hvm/vlapic.c b/xen/arch/x86/hvm/vlapic.c index 20c8fe3566..9e1db88599 100644 --- a/xen/arch/x86/hvm/vlapic.c +++ b/xen/arch/x86/hvm/vlapic.c @@ -119,6 +119,9 @@ static void vlapic_clear_irr(int vector, struct vlapic *vlapic) static int vlapic_find_highest_irr(struct vlapic *vlapic) { + if ( hvm_funcs.sync_pir_to_irr ) + hvm_funcs.sync_pir_to_irr(vlapic_vcpu(vlapic)); + return vlapic_find_highest_vector(&vlapic->regs->data[APIC_IRR]); } @@ -132,8 +135,9 @@ void vlapic_set_irq(struct vlapic *vlapic, uint8_t vec, uint8_t trig) if ( hvm_funcs.update_eoi_exit_bitmap ) hvm_funcs.update_eoi_exit_bitmap(target, vec, trig); - /* We may need to wake up target vcpu, besides set pending bit here */ - if ( !vlapic_test_and_set_irr(vec, vlapic) ) + if ( hvm_funcs.deliver_posted_intr ) + hvm_funcs.deliver_posted_intr(target, vec); + else if ( !vlapic_test_and_set_irr(vec, vlapic) ) vcpu_kick(target); } -- 2.30.2