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ARM: make highpte an expert option

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When highmem is enabled, there's little reason not to also enable
highpte support as well.  Rather than leaving this to chance, make
it an expert option, and default it to be enabled if highmem is
enabled.  Add some help text to the option while we're here.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2015-06-25 10:44:08 +01:00
parent 63ce446c9b
commit 9a431bd5a2
1 changed files with 2 additions and 1 deletions
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arch/arm/Kconfig
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@ -1697,8 +1697,9 @@ config HIGHMEM
If unsure, say n.
config HIGHPTE
bool "Allocate 2nd-level pagetables from highmem"
bool "Allocate 2nd-level pagetables from highmem" if EXPERT
depends on HIGHMEM
default y
help
The VM uses one page of physical memory for each page table.
For systems with a lot of processes, this can use a lot of