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Patch "KVM: x86: properly restore LVT0" has been added to the 4.1-stable tree

PATCH [email protected] 1 participant 1 message Jul 8, 2015

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This is a note to let you know that I've just added the patch titled

KVM: x86: properly restore LVT0

to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
kvm-x86-properly-restore-lvt0.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From db1385624c686fe99fe2d1b61a36e1537b915d08 Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= <[email protected]>
Date: Tue, 30 Jun 2015 22:19:17 +0200
Subject: KVM: x86: properly restore LVT0
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Content-Type: text/plain; charset=UTF-8
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From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= <[email protected]>

commit db1385624c686fe99fe2d1b61a36e1537b915d08 upstream.

Legacy NMI watchdog didn't work after migration/resume, because vapics_in_nmi_mode was left at 0.

---
 arch/x86/kvm/lapic.c |    1 +
 1 file changed, 1 insertion(+)
arch/x86/kvm/lapic.c +1 -0
@@ -1808,6 +1808,7 @@ void kvm_apic_post_state_restore(struct
 	apic_update_ppr(apic);
 	hrtimer_cancel(&apic->lapic_timer.timer);
 	apic_update_lvtt(apic);
+	apic_manage_nmi_watchdog(apic, kvm_apic_get_reg(apic, APIC_LVT0));
 	update_divide_count(apic);
 	start_apic_timer(apic);
 	apic->irr_pending = true;

Patches currently in stable-queue which might be from [email protected] are

queue-4.1/kvm-x86-properly-restore-lvt0.patch queue-4.1/kvm-x86-make-vapics_in_nmi_mode-atomic.patch