On Tue, Dec 01, 2009 at 02:55:25PM +0800, Wu Zhangjin wrote: > From: Wu Zhangjin <wuzhangjin@xxxxxxxxx> > Date: Tue, 1 Dec 2009 14:55:25 +0800 > To: Ralf Baechle <ralf@xxxxxxxxxxxxxx> > Cc: linux-mips@xxxxxxxxxxxxxx, zhangfx@xxxxxxxxxx, > Wu Zhangjin <wuzhangjin@xxxxxxxxx> > Subject: [PATCH 1/2] Loongson: disable PAGE_SIZE_4KB > > From: Wu Zhangjin <wuzhangjin@xxxxxxxxx> > > 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(Documentation/cachetlb.txt), to avoid such problem, we may need > extra cache flushing. but with 16kb page size, there is no cache aliases > problem and no corresponding operations needed to cope with that > problem, so, it's better to disable 4kb page size directly before the > above problem is solved. > > Signed-off-by: Wu Zhangjin <wuzhangjin@xxxxxxxxx> Applied - though I'm not so sure if I can get this one to Linus as close to a release as we are now. Thanks! Ralf
