[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH][SVM] fix guest hang
On Tuesday 20 November 2007 16:29:02 Christoph Egger wrote: > Changeset 16398 is fine with me. Thank you for committing the fix. At least SLES 9.3 does not hang at boot. We will do more intensive testing. > Christoph > > On Tuesday 20 November 2007 16:08:32 Keir Fraser wrote: > > Good catch. Actually I think it is better to clear interrupt_shadow in > > update_guest_eip. I did this, plus a few other cleanups as c/s 16398 in > > the unstable staging tree. Please take a look and make sure I didn't > > screw up. > > > > Thanks, > > Keir > > > > On 20/11/07 12:56, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote: > > > Hi Keir! > > > > > > Attached patch fixes a boot hang we have seen with SLES 9.3 and FreeBSD > > > HVM guests. Both are 32bit guests and run with a 64bit hypervisor. > > > > > > The patch does the following: > > > 1) Cache current vcpu in svm_vmexit_do_hlt > > > 2) Check for interrupt shadow in svm_vmexit_do_hlt and handle it like a > > > pending interrupt > > > > > > The boot hang happens when the hlt is intercepted and the interrupt > > > shadow field in vmcb is set, then the guest waits forever for the next > > > timer interrupt. > > > > > > Change 1) is a cleanup, 2) is the fix > > > > > > Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx> -- AMD Saxony, Dresden, Germany Operating System Research Center Legal Information: AMD Saxony Limited Liability Company & Co. KG Sitz (Geschäftsanschrift): Wilschdorfer Landstr. 101, 01109 Dresden, Deutschland Registergericht Dresden: HRA 4896 vertretungsberechtigter Komplementär: AMD Saxony LLC (Sitz Wilmington, Delaware, USA) Geschäftsführer der AMD Saxony LLC: Dr. Hans-R. Deppe, Thomas McCoy _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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