On Thu, 2005-08-04 at 07:04 -0700, Christoph Lameter wrote: > On Thu, 4 Aug 2005, Richard Purdie wrote: > > > On Wed, 2005-08-03 at 17:19 -0700, Christoph Lameter wrote: > > > Could you try the following patch? I think the problem was that higher > > > addressses were not mappable via the page fault handler. This patch > > > inserts the pmd entry into the pgd as necessary if the pud level is > > > folded. > > > > I tried this patch against 2.6.13-rc4-mm1 and there was no change - X > > still hung in memcpy as before and the cmpxchg_fail_flag_update just > > increases... > > Is there some way you can give us more information about the problem? > Something that would allow us to determine where the thing is looping?
I'm at a disadvantage here as the linux mm system is one area I've avoided getting too deeply involved with so far. My knowledge is therefore limited and I won't know what correct or incorrect behaviour would look like. We know the the failure case can be identified by the cmpxchg_fail_flag_update condition being met. Can you provide me with a patch to dump useful debugging information when that occurs? Richard - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
