Messages in this thread | | | From | Linus Torvalds <> | Date | Wed, 2 May 2012 22:57:58 -0700 | Subject | Re: Oops with DCACHE_WORD_ACCESS and ocfs2, autofs4 |
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Forgot to actually add Peter and Ingo to the cc..
Linus
On Wed, May 2, 2012 at 10:57 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote: > > The word-at-a-time code assumes that no allocation will be the last > page (whether kmalloc or normal page allocation), which was always > somewhat optimistic but I thought it would be true on PC's. > > And that %rbp value does *not* look like end-of-memory, but maybe > there is something else than just the CONFIG_DEBUG_PAGEALLOC that > causes us to punch holes even in the kernel memory map. > > Peter, Ingo - do we unmap kernel pages for PAT etc attributes?
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