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    SubjectRe: [Xen-devel] Possible shadow bug
    At 11:01 +0100 on 10 Jun (1307703699), Tim Deegan wrote:
    > Actually, looking at the disassembly you posted, it looks more like it
    > might be an emulator bug in Xen; if Xen finds itself emulating the IMUL
    > instruction and either gets the logic wrong or does the memory access
    > wrong, it could cause that failure. And one reason that Xen emulates
    > instructions is if the memory operand is on a pagetable that's shadowed
    > (which might be a page that was recently a pagetable).
    >
    > ISTR that even though the RHEL xen reports a 3.0.x version it has quite
    > a lot of backports in it. Does it have this patch?
    > http://hg.uk.xensource.com/xen-3.1-testing.hg/rev/e8fca4c42d05

    Oops, that URL doesn't work; I meant this:
    http://xenbits.xen.org/xen-3.1-testing.hg/rev/e8fca4c42d05

    Tim.

    --
    Tim Deegan <Tim.Deegan@citrix.com>
    Principal Software Engineer, Xen Platform Team
    Citrix Systems UK Ltd. (Company #02937203, SL9 0BG)


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