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KVM guest: disable stealtime on reboot to avoid mem corruption 

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,