linux

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Vineet Gupta 37eda9df5b ARC: mm: Introduce explicit super page size support

MMUv4 supports 2 concurrent page sizes: Normal and Super [4K to 16M]

So far Linux supported a single super page size for a given Normal page,
depending on the software page walking address split.
e.g. we had 11:8:13 address split for 8K page, which meant super page
was 2 ^(8+13) = 2M (given that THP size has to be PMD_SHIFT)

Now we turn this around, by allowing multiple Super Pages in Kconfig
(currently 2M and 16M only) and forcing page walker address split to
PGDIR_SHIFT and PAGE_SHIFT

For configs without Super page, things are same as before and
PGDIR_SHIFT can be hacked to get non default address split

The motivation for this change is a customer who needs 16M super page
and a 8K Normal page combo.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

2016-02-12 12:10:25 +05:30

boot

ARC: [plat-sim] unbork non default CONFIG_LINUX_LINK_BASE

2015-12-17 11:06:43 +05:30

configs

ARCv2: clocksource: Rename GRTC -> GFRC ...

2016-01-29 16:51:02 +05:30

include

ARC: mm: Introduce explicit super page size support

2016-02-12 12:10:25 +05:30

kernel

ARCv2: intc: Allow interruption by lowest priority interrupt