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KVM: Move apic timer migration away from critical section

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Migrating the apic timer in the critical section is not very nice, and is
absolutely horrible with the real-time port.  Move migration to the regular
vcpu execution path, triggered by a new bitflag.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity
2008-01-16 12:49:30 +02:00
parent a03d7f4b54
commit 2f52d58c92
4 changed files with 12 additions and 4 deletions
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5
arch/x86/kvm/x86.c
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@@ -2518,13 +2518,16 @@ again:
if (unlikely(r))
goto out;
if (vcpu->requests)
if (vcpu->requests) {
if (test_and_clear_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests))
__kvm_migrate_apic_timer(vcpu);
if (test_and_clear_bit(KVM_REQ_REPORT_TPR_ACCESS,
&vcpu->requests)) {
kvm_run->exit_reason = KVM_EXIT_TPR_ACCESS;
r = 0;
goto out;
}
}
kvm_inject_pending_timer_irqs(vcpu);