From eb1fe944a89457981407f5335f11bae104a32e57 Mon Sep 17 00:00:00 2001 From: "Justin Terry (VM) via Qemu-devel" Date: Mon, 26 Feb 2018 09:13:36 -0800 Subject: WHPX improve interrupt notification registration Improves the usage of the InterruptNotification registration by skipping the additional call to WHvSetVirtualProcessorRegisters if we have already registered for the window exit. Signed-off-by: Justin Terry (VM) Message-Id: <1519665216-1078-9-git-send-email-juterry@microsoft.com> Signed-off-by: Paolo Bonzini Signed-off-by: Justin Terry (VM) via Qemu-devel --- target/i386/whpx-all.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'target') diff --git a/target/i386/whpx-all.c b/target/i386/whpx-all.c index 24387be..940bbe5 100644 --- a/target/i386/whpx-all.c +++ b/target/i386/whpx-all.c @@ -756,12 +756,11 @@ static void whpx_vcpu_pre_run(CPUState *cpu) } /* Update the state of the interrupt delivery notification */ - if (cpu->interrupt_request & CPU_INTERRUPT_HARD) { + if (!vcpu->window_registered && + cpu->interrupt_request & CPU_INTERRUPT_HARD) { reg_values[reg_count].DeliverabilityNotifications.InterruptNotification = 1; - if (vcpu->window_registered != 1) { - vcpu->window_registered = 1; - } + vcpu->window_registered = 1; reg_names[reg_count] = WHvX64RegisterDeliverabilityNotifications; reg_count += 1; } -- cgit v1.1