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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-04-18 16:56:17 +1000
committerPaul Mackerras <paulus@samba.org>2008-04-24 20:57:33 +1000
commitf6a616800e68b61807d0f7bb0d5dc70665ef8046 (patch)
tree62f8224cb6a7da0bc203de1be8a7f3485f4b583b /scripts/makelst
parent8c9843e57a7d9d7a090d6467a0f1f3afb8031527 (diff)
[POWERPC] Fix kernel stack allocation alignment
The powerpc kernel stacks need to be naturally aligned, as they contain the thread info at the bottom, which is obtained by clearing the low bits of the stack pointer. However, when using 64K pages, the stack is smaller than a page, so we use kmalloc to allocate it, but that doesn't provide the alignment guarantee we need. It appeared to work so far... until one enables SLUB debugging which then returns unaligned pointers. Ooops... This fixes it by using a slab cache with enforced alignment. It relies on my previous patch that adds a thread_info_cache_init() callback. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'scripts/makelst')
0 files changed, 0 insertions, 0 deletions