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39ac11c160
The previous implementation of clear_user_highpage and copy_user_highpage checked to see if there was a D-cache aliasing issue between the user and kernel mappings of a page, but if there was they always did a flush with writeback on the dirtied kernel alias. However as we now have the ability to map a page into kernel space with the same cache colour as the user mapping, there is no need to write back this data. Currently we also invalidate the kernel alias as a precaution, however I'm not sure if this is actually required. Also correct the definition of FIX_CMAP_END so that the mappings created by kmap_coherent() are actually at the correct colour. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org> |
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| asm | ||
| cpu-common/cpu | ||
| cpu-sh2/cpu | ||
| cpu-sh2a/cpu | ||
| cpu-sh3/cpu | ||
| cpu-sh4/cpu | ||
| cpu-sh5/cpu | ||
| mach-common/mach | ||
| mach-dreamcast/mach | ||
| mach-ecovec24/mach | ||
| mach-kfr2r09/mach | ||
| mach-landisk/mach | ||
| mach-migor/mach | ||
| mach-se/mach | ||
| mach-sh03/mach | ||