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Date: Wed, 15 Aug 2012 16:00:40 +0200 From: Florian Westphal <fw@...len.de> To: kvm@...r.kernel.org Cc: mtosatti@...hat.com, linux-kernel@...r.kernel.org, glommer@...hat.com, Florian Westphal <fw@...len.de> Subject: [PATCH V2] KVM: x86: 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@...len.de> --- arch/x86/kernel/kvm.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) Changes since v1: - leave arch/x86/kernel/kvmclock.c as-is (requested by Marcelo) diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index c1d61ee..1596cc8 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -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, -- 1.7.8.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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