• Paul Mundt's avatar
    sh: Lazy dcache writeback optimizations. · 26b7a78c
    Paul Mundt authored
    This converts the lazy dcache handling to the model described in
    Documentation/cachetlb.txt and drops the ptep_get_and_clear() hacks
    used for the aliasing dcaches on SH-4 and SH7705 in 32kB mode. As a
    bonus, this slightly cuts down on the cache flushing frequency.
    
    With that and the PTEA handling out of the way, the update_mmu_cache()
    implementations can be consolidated, and we no longer have to worry
    about which configuration the cache is in for the SH7705 case.
    
    And finally, explicitly disable the lazy writeback on SMP (SH-4A).
    Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
    26b7a78c
tlb-sh3.c 866 Bytes