sh: fix up MMU reset with variable PMB mapping sizes.

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Presently we run in to issues with the MMU resetting the CPU when
variable sized mappings are employed. This takes a slightly more
aggressive approach to keeping the TLB and cache state sane before
establishing the mappings in order to cut down on races observed on
SMP configurations.

At the same time, we bump the VMA range up to the 0xb000...0xc000 range,
as there still seems to be some undocumented behaviour in setting up
variable mappings in the 0xa000...0xb000 range, resulting in reset by the
TLB.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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This commit is contained in:

Paul Mundt 2010-03-04 16:44:20 +09:00

parent 09e1172317

commit 281983d6ff

1 changed files with 31 additions and 6 deletions

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arch/sh/mm/pmb.c

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