Thread (45 messages) 45 messages, 6 authors, 2011-12-22

Re: [PATCH 0/5 V5] Avoid soft lockup message when KVM is stopped by host

From: Amit Shah <hidden>
Date: 2011-12-08 11:35:17
Also in: kvm, lkml

On (Mon) 05 Dec 2011 [15:18:59], Eric B Munson wrote:
When a guest kernel is stopped by the host hypervisor it can look like a soft
lockup to the guest kernel.  This false warning can mask later soft lockup
warnings which may be real.  This patch series adds a method for a host
hypervisor to communicate to a guest kernel that it is being stopped.  The
final patch in the series has the watchdog check this flag when it goes to
issue a soft lockup warning and skip the warning if the guest knows it was
stopped.
Guest S4 would need similar treatment, and I think the code in the two
approaches can be shared.  Just something to consider.

		Amit
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