On 2011-03-01 13:58, Alon Levy wrote: > On Sun, Feb 27, 2011 at 08:11:26PM +0100, Jan Kiszka wrote: >> On 2011-02-27 20:03, Alon Levy wrote: >>> On Sat, Feb 26, 2011 at 01:29:01PM +0100, Jan Kiszka wrote: >>>> On 2011-02-26 12:43, xming wrote: >>>>> When trying to start X (and it loads qxl driver) the kvm process just crashes. >>> >>> This is fixed by Gerd's attached patch (taken from rhel repository, don't know >>> why it wasn't pushed to qemu-kvm upstream). I'll send it to kvm list as well (separate email). >> >> Patch looks OK on first glance, but the changelog is misleading: This >> was broken for _both_ trees, but upstream didn't detect the bug. > > So I didn't test with qemu not having this patch, but according to the discussion in the > launchpad bug the problem only happens with qemu-kvm. This doesn't rule out it being a > bug, perhaps it is just triggered much less frequently I guess. Again: qemu-kvm has the instrumentation to detect the bug, qemu is lacking this, but both trees will break subtly if cpu_current_env is not properly restored. Jan
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