On Mon, 2011-06-13 at 12:59 -0500, Christoph Lameter wrote: > On Sun, 12 Jun 2011, Hugh Dickins wrote: > > > 3.0-rc won't boot with SLUB on my PowerPC G5: kernel BUG at mm/slub.c:1950! > > Bisected to 1759415e630e "slub: Remove CONFIG_CMPXCHG_LOCAL ifdeffery". > > > > After giving myself a medal for finding the BUG on line 1950 of mm/slub.c > > (it's actually the > > VM_BUG_ON((unsigned long)(&pcp1) % (2 * sizeof(pcp1))); > > on line 268 of the morass that is include/linux/percpu.h) > > I tried the following alignment patch and found it to work. > > Hmmm.. The allocpercpu in alloc_kmem_cache_cpus should take care of the > alignment. Uhh.. I see that a patch that removes the #ifdef CMPXCHG_LOCAL > was not applied? Pekka? This patch? http://git.kernel.org/?p=linux/kernel/git/penberg/slab-2.6.git;a=commitdiff;h=d4d84fef6d0366b585b7de13527a0faeca84d9ce It's queued and will be sent to Linus soon. Pekka -- 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>