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WHPX improve interrupt notification registration

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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) <juterry@microsoft.com>
Message-Id: <1519665216-1078-9-git-send-email-juterry@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Justin Terry (VM) via Qemu-devel <qemu-devel@nongnu.org>
This commit is contained in:
Justin Terry (VM) via Qemu-devel 2018-02-26 09:13:36 -08:00 committed by Paolo Bonzini
parent e2940978fc
commit eb1fe944a8
1 changed files with 3 additions and 4 deletions
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7
target/i386/whpx-all.c
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@ -756,12 +756,11 @@ static void whpx_vcpu_pre_run(CPUState *cpu)
} }
/* Update the state of the interrupt delivery notification */ /* 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 reg_values[reg_count].DeliverabilityNotifications.InterruptNotification
= 1; = 1;
if (vcpu->window_registered != 1) { vcpu->window_registered = 1;
vcpu->window_registered = 1;
}
reg_names[reg_count] = WHvX64RegisterDeliverabilityNotifications; reg_names[reg_count] = WHvX64RegisterDeliverabilityNotifications;
reg_count += 1; reg_count += 1;
} }