linux/arch/arc/mm
Vineet Gupta b5ddb6d547 ARCv2: PAE40: set MSB even if !CONFIG_ARC_HAS_PAE40 but PAE exists in SoC
PAE40 confiuration in hardware extends some of the address registers
for TLB/cache ops to 2 words.

So far kernel was NOT setting the higher word if feature was not enabled
in software which is wrong. Those need to be set to 0 in such case.

Normally this would be done in the cache flush / tlb ops, however since
these registers only exist conditionally, this would have to be
conditional to a flag being set on boot which is expensive/ugly -
specially for the more common case of PAE exists but not in use.
Optimize that by zero'ing them once at boot - nobody will write to
them afterwards

Cc: stable@vger.kernel.org   #4.4+
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-08-04 13:56:35 +05:30
..
cache.c ARCv2: PAE40: set MSB even if !CONFIG_ARC_HAS_PAE40 but PAE exists in SoC 2017-08-04 13:56:35 +05:30
dma.c ARC: dma: implement dma_unmap_page and sg variant 2017-08-04 13:56:33 +05:30
extable.c ARC: uaccess: enable INLINE_COPY_{TO,FROM}_USER ... 2017-03-30 00:07:48 -04:00
fault.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
highmem.c ARC: export kmap 2016-08-19 10:45:29 -07:00
init.c ARCv2: IOC: Use actual memory size to setup aperture size 2017-01-18 14:52:43 -08:00
ioremap.c ARCv2: Support dynamic peripheral address space in HS38 rel 3.0 cores 2016-09-30 14:48:17 -07:00
Makefile ARC: mm: HIGHMEM: kmap API implementation 2015-10-28 19:49:04 +05:30
mmap.c mm: larger stack guard gap, between vmas 2017-06-19 21:50:20 +08:00
tlb.c ARCv2: PAE40: set MSB even if !CONFIG_ARC_HAS_PAE40 but PAE exists in SoC 2017-08-04 13:56:35 +05:30
tlbex.S ARC: mm: retire ARC_DBG_TLB_MISS_COUNT... 2016-10-28 10:10:28 -07:00