[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] xm save + restore crashes Windows 200832-bit(4.0.2-rc2-pre) (AMD only)
> > At 13:35 +0000 on 25 Jan (1295962540), James Harper wrote: > > So the problem is somewhere past hvm_set_segment_register, and because > > it's amd only, probably in or beyond svm_set_segment_register. The first > > thing I notice in that routine is that there is a case for those 4 > > registers... although all it seems to do is svm_sync_vmcb before and > > svm_vmload after setting. I don't know what those two do though. > > Hmm; I suspect the bug here is actually in the save side -- the syncing > of the vmcb in the save routine is not conditional on v == current, and > the "already synced" bit that it would otherwise gate on isn't properly > initialized. > > Try the attached patch; I'm sorry to say that I suspect it will fix the > odd output of xen_hvmctx but probably won't fix the BSOD. :( > Just to clarify, in the restore path I print the values to be saved to the segment registers, then I read the segment registers and print the values that are in them. They aren't the same. Doesn't that sound like a problem on the restore side? James _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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