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    SubjectRe: [PATCH] x86_64: make traps on 'iret' be debuggable in user space
    On 02/05/2008 03:15 AM, Roland McGrath wrote:
    >> thanks, applied. I suppose you have a testcase for this that we could try?
    >
    > This should exit 0 and show "wait status 0xb7f", and does on i386.
    > On 2.6.24 it exits 1 and shows "wait status 0xb".
    >
    > Note, on the current tree before [PATCH] x86_64: fix iret exception recovery
    > that I also posted today, this will instead produce pathological weirdness
    > probably with a quick crash or silent reboot, from running with the wrong GS.
    >

    Did you test without CONFIG_PARAVIRT, and CONFIG_PARAVIRT booted both with and
    without the "noreplace-paravirt" parameter?



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