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Date: Tue, 02 Dec 2008 14:23:52 +0200 From: Avi Kivity <avi@...hat.com> To: Luis Henriques <henrix@...o.pt> CC: kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [BUG] kvm crashes in 2.6.28-rc6-00007-ged31348 Luis Henriques wrote: > On Sun, Nov 30, 2008 at 10:44:55PM +0200, Avi Kivity wrote: > >> Luis Henriques wrote: >> >>> No, I was not able to reproduce the issue. Please let me know if you need some >>> more information on my system (.config, for instance). >>> >>> >> Were you using some other virtualization product? Were you running >> suspend/resume? >> > > No for both questions. However, I had compiled support for suspend (not sure if > this is what you mean by "running suspend/resume") - This is a feature I used > only once or twice... > The underlying problem is that an svm instruction has been executed, but svm is disabled. Since kvm enables svm unconditionally on all processors on startup, there are only a few paths that can potentially trigger this: - another virtualization module turned svm off - cpu hotadd/hotremove (suspend/resume triggers this) - something did a read-modify-write cycle on cr4 (which contains the svm enable bit) while kvm enabled that bit - core was turned off (does linux power management do that?) Anything ring a bell? -- error compiling committee.c: too many arguments to function -- 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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