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| author | Paul Mundt <lethal@linux-sh.org> | 2007-09-27 01:47:00 (GMT) |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2007-09-27 01:47:00 (GMT) |
| commit | 4d2cab7c00ebf5c12c3177763fed5a6b4658d384 (patch) | |
| tree | 9862eb322bec6e24f3ef0645c57fc2a03682195b | |
| parent | 26fad19d8c3ca9abd7ffb85a63f8e25f1b4910dc (diff) | |
| download | linux-fsl-qoriq-4d2cab7c00ebf5c12c3177763fed5a6b4658d384.tar.xz | |
sh: Disable 4kB pages on extended mode TLB.
4kB pages are unstable on extended mode TLB, it's recommended
that TLB compat mode be used when using a 4kB PAGE_SIZE. Set
the default for extended mode to 8kB.
This should have negligible impact, as other than the extra swap
cache entry bits, there's no reason to use the extended mode TLB
with 4kB pages.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | arch/sh/mm/Kconfig | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index a953989..d186c50 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -336,25 +336,27 @@ config ARCH_MEMORY_PROBE choice prompt "Kernel page size" + default PAGE_SIZE_8KB if X2TLB default PAGE_SIZE_4KB config PAGE_SIZE_4KB bool "4kB" + depends on !X2TLB help This is the default page size used by all SuperH CPUs. config PAGE_SIZE_8KB bool "8kB" - depends on EXPERIMENTAL && X2TLB + depends on X2TLB help This enables 8kB pages as supported by SH-X2 and later MMUs. config PAGE_SIZE_64KB bool "64kB" - depends on EXPERIMENTAL && CPU_SH4 + depends on CPU_SH4 help This enables support for 64kB pages, possible on all SH-4 - CPUs and later. Highly experimental, not recommended. + CPUs and later. endchoice |