Commit 8fbe6a54 authored Aug 15, 2012 by Florian Westphal Committed by Marcelo Tosatti Aug 15, 2012

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>

parent 28a6fdab

arch/x86/kernel/kvm.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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,

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