• Benjamin Herrenschmidt's avatar
    [POWERPC] spufs: cell spu problem state mapping updates · 27d5bf2a
    Benjamin Herrenschmidt authored
    This patch adds a new "psmap" file to spufs that allows mmap of all of
    the problem state mapping of SPEs. It is compatible with 64k pages. In
    addition, it removes mmap ability of individual files when using 64k
    pages, with the exception of signal1 and signal2 which will both map the
    entire 64k page holding both registers. It also removes
    CONFIG_SPUFS_MMAP as there is no point in not building mmap support in
    spufs.
    
    It goes along a separate patch to libspe implementing usage of that new
    file to access problem state registers.
    
    Another patch will follow up to fix races opened up by accessing
    the 'runcntl' register directly, which is made possible with this
    patch.
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
    Signed-off-by: default avatarArnd Bergmann <arnd.bergmann@de.ibm.com>
    Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
    27d5bf2a
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