Messages in this thread Patch in this message | | | Date | Fri, 30 Apr 2004 11:27:04 -0700 | From | Andrew Morton <> | Subject | Re: [BUG] 2.6.6-rc2-bk5 mm/slab.c change broke x86-64 SMP |
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Mikael Pettersson <mikpe@csd.uu.se> wrote: > > The change to mm/slab.c between 2.6.6-rc2-bk4 and -bk5 > broke x86-64 SMP. The symptoms are general protection > faults in __switch_to shortly after init starts, and > then the machine is dead. (Can't be more specific, my > box can't log early boot oopses.) > > I'm only seeing this with x86-64 SMP; x86-64 UP and i386 > SMP on the same machine (Athlon64 UP) have no problems. > > Reverting 2.6.6-rc2-bk5's change to mm/slab.c eliminates > the problem.
The "-bk5" terminology doesn't mean much to people who use bitkeeper or who use http://www.kernel.org/pub/linux/kernel/v2.5/testing/cset/ - I assume you refer to the alignment changes?
Does this fix?
diff -puN include/asm-x86_64/processor.h~a include/asm-x86_64/processor.h --- 25/include/asm-x86_64/processor.h~a Fri Apr 30 11:24:58 2004 +++ 25-akpm/include/asm-x86_64/processor.h Fri Apr 30 11:25:28 2004 @@ -20,6 +20,8 @@ #include <asm/mmsegment.h> #include <linux/personality.h> +#define ARCH_MIN_TASKALIGN L1_CACHE_BYTES + #define TF_MASK 0x00000100 #define IF_MASK 0x00000200 #define IOPL_MASK 0x00003000 _
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