Max Filippov a91902db29 xtensa: implement clear_user_highpage and copy_user_highpage ... Existing clear_user_page and copy_user_page cannot be used with highmem because they calculate physical page address from its virtual address and do it incorrectly in case of high memory page mapped with kmap_atomic. Also kmap is not needed, as most likely userspace mapping color would be different from the kmapped color. Provide clear_user_highpage and copy_user_highpage functions that determine if temporary mapping is needed for the pages. Move most of the logic of the former clear_user_page and copy_user_page to xtensa/mm/cache.c only leaving temporary mapping setup, invalidation and clearing/copying in the xtensa/mm/misc.S. Rename these functions to clear_page_alias and copy_page_alias. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>		2014-08-14 11:59:20 +04:00
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cache.c	xtensa: implement clear_user_highpage and copy_user_highpage	2014-08-14 11:59:20 +04:00
fault.c	xtensa: add SMP support	2014-01-14 10:19:58 -08:00
highmem.c	xtensa: make fixmap region addressing grow with index	2014-08-14 11:59:17 +04:00
init.c	xtensa: fix sysmem reservation at the end of existing block	2014-06-09 22:29:12 +04:00
Makefile	xtensa: add HIGHMEM support	2014-04-06 21:29:21 +04:00
misc.S	xtensa: implement clear_user_highpage and copy_user_highpage	2014-08-14 11:59:20 +04:00
mmu.c	xtensa: allow fixmap and kmap span more than one page table	2014-08-14 11:59:18 +04:00
tlb.c	xtensa: optimize local_flush_tlb_kernel_range	2014-04-06 21:29:17 +04:00