[LinuxPPS] MIPS: Loongson: Disallow 4kB pages

[gitweb.enneenne.com Git - linuxpps/rss log: Wu Zhangjin <>]

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 at gmail.com>
    Patchwork: http://patchwork.linux-mips.org/patch/736/
    Cc: linux-mips at linux-mips.org
    Cc: zhangfx at lemote.com
    Signed-off-by: Ralf Baechle <ralf at linux-mips.org>
    

  * [[D][1][H][2]] arch/mips/Kconfig

   [1]: http://gitweb.enneenne.com/?p=linuxpps;a=blobdiff;f=arch/mips/Kconfig;fp=arch/mips/Kconfig;h=e232e50e6a0a7e0ef699e8810a6ec36d37616971;hp=ffdd651c54b1a56399299b9d223d96f0d50463dc;hb=315fe625f878749a7d2b6b65a40c29bbbe6e1dc7;hpb=e1eb3a983befdb422e1aae299bdab573d04929f6 (diff)
   [2]: http://gitweb.enneenne.com/?p=linuxpps;a=history;f=arch/mips/Kconfig;h=315fe625f878749a7d2b6b65a40c29bbbe6e1dc7 (history)

URL: http://gitweb.enneenne.com/?p=linuxpps;a=commitdiff;h=315fe625f878749a7d2b6b65a40c29bbbe6e1dc7