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authorWu Zhangjin <wuzhangjin@gmail.com>2009-12-01 14:55:25 +0800
committerRalf Baechle <ralf@linux-mips.org>2009-12-01 16:21:26 +0000
commit315fe625f878749a7d2b6b65a40c29bbbe6e1dc7 (patch)
treef3bf789a101752e9075c8d21623cd07ef5c76f48 /arch/mips/math-emu/sp_add.c
parente1eb3a983befdb422e1aae299bdab573d04929f6 (diff)
MIPS: Loongson: Disallow 4kB pages
Currently, with PAGE_SIZE_4KB, the kernel for loongson will hang on: Kernel panic - not syncing: Attempted to kill init! The possible reason is the cache aliases problem: Loongson 2F has 64kb, 4 way L1 Cache, the way size is 16kb, which is bigger then 4kb. so, If using 4kb page size, there is cache aliases problem. To avoid this kind of problem, extra cache flushing. The 2nd possible solution is 16kb page size which avoids cache aliases without the need for extra cache flushes. So we disable 4kB pages until the aliasing issue is solved. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Patchwork: http://patchwork.linux-mips.org/patch/736/ Cc: linux-mips@linux-mips.org Cc: zhangfx@lemote.com Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu/sp_add.c')
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