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KVM guest: disable stealtime on reboot to avoid mem corruption

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else, host continues to update stealtime after reboot,
which can corrupt e.g. initramfs area.
found when tracking down initramfs unpack error on initial reboot
(with qemu-kvm -smp 2, no problem with single-core).

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Florian Westphal 2012-08-15 16:00:40 +02:00 committed by Marcelo Tosatti
parent 28a6fdabb3
commit 8fbe6a541f
1 changed files with 1 additions and 0 deletions
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arch/x86/kernel/kvm.c
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@ -354,6 +354,7 @@ static void kvm_pv_guest_cpu_reboot(void *unused)
if (kvm_para_has_feature(KVM_FEATURE_PV_EOI))
wrmsrl(MSR_KVM_PV_EOI_EN, 0);
kvm_pv_disable_apf();
kvm_disable_steal_time();
}
static int kvm_pv_reboot_notify(struct notifier_block *nb,