On Thu, 24 Mar 2011, Pekka Enberg wrote: > On Thu, Mar 24, 2011 at 7:43 PM, Christoph Lameter <cl@xxxxxxxxx> wrote: > > The bug should only trigger on old AMD64 boxes that do not support > > cmpxchg16b. > > Yup. Ingo is it possible to see /proc/cpuinfo of one of the affected > boxes? I'll try your config but I'm pretty sure the problem doesn't > trigger here. Like I said, I think the problem is that alternative > instructions are not patched early enough for cmpxchg16b emulation to > work for kmem_cache_init(). I tried my check_bugs() patch but it hangs > during boot. I'll see if I can cook up a patch that does > alternative_instructions() before kmem_cache_init() because I think > those *should* be available during boot too. I forced the fallback to the _emu function to occur but could not trigger the bug in kvm. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>