Hi, this series implements highmem support on xtensa cores with aliasing cache. It does so by making sure that high memory pages are always mapped at virtual addresses with color that match color of their physical address. This involves changing the generic kmap code to make it aware of cache coloring. This part with corresponding arch changes is cc'd linux-mm, linux-arch and linux-mips. The whole series can also be found at: git://github.com/jcmvbkbc/linux-xtensa.git xtensa-highmem-ca Leonid Yegoshin (1): mm/highmem: make kmap cache coloring aware Max Filippov (7): xtensa: make fixmap region addressing grow with index xtensa: allow fixmap and kmap span more than one page table xtensa: fix TLBTEMP_BASE_2 region handling in fast_second_level_miss xtensa: implement clear_user_highpage and copy_user_highpage xtensa: support aliasing cache in k[un]map_atomic xtensa: support aliasing cache in kmap xtensa: support highmem in aliasing cache flushing code arch/xtensa/include/asm/cacheflush.h | 2 + arch/xtensa/include/asm/fixmap.h | 30 +++++++-- arch/xtensa/include/asm/highmem.h | 18 +++++- arch/xtensa/include/asm/page.h | 14 ++++- arch/xtensa/include/asm/pgtable.h | 7 ++- arch/xtensa/kernel/entry.S | 2 +- arch/xtensa/mm/cache.c | 77 ++++++++++++++++++++--- arch/xtensa/mm/highmem.c | 24 +++++--- arch/xtensa/mm/misc.S | 116 ++++++++++++++++------------------- arch/xtensa/mm/mmu.c | 38 +++++++----- mm/highmem.c | 19 +++++- 11 files changed, 235 insertions(+), 112 deletions(-) Cc: linux-mm@xxxxxxxxx Cc: linux-arch@xxxxxxxxxxxxxxx Cc: linux-mips@xxxxxxxxxxxxxx Cc: David Rientjes <rientjes@xxxxxxxxxx> -- 1.8.1.4
