kernel.git/arch/xtensa/include/asm/fixmap.h, branch linux-3.15.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-3.15.y2014-04-06T17:29:21Zxtensa: add HIGHMEM support2014-04-06T17:29:21ZMax Filippov2014-02-03T22:17:09Zurn:sha1:65559100655c6ed6ce2e17ffc8d4f3852bc2858a
Introduce fixmap area just below the vmalloc region. Use it for atomic
mapping of high memory pages.
High memory on cores with cache aliasing is not supported and is still
to be implemented. Fail build for such configurations for now.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>