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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-06-25 10:49:45 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-06-29 14:33:14 +0100 |
| commit | b4d103d1a45fed0da2f31c905eb5e053c84a41c6 (patch) | |
| tree | b833202fc9d4656b0bd1762e2abc73ec2e9fbeee /arch/arm | |
| parent | e6ae32c343981a50aa07c34767f2a967cc920edc (diff) | |
| download | linux-b4d103d1a45fed0da2f31c905eb5e053c84a41c6.tar.gz linux-b4d103d1a45fed0da2f31c905eb5e053c84a41c6.tar.bz2 linux-b4d103d1a45fed0da2f31c905eb5e053c84a41c6.zip | |
ARM: add help text for HIGHPTE configuration entry
Add some help text for the HIGHPTE configuration entry. This comes from
the x86 entry, but reworded to be more a more accurate description of
what this option does.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 45df48ba0b12..cc0ea0c6cfc9 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1661,6 +1661,12 @@ config HIGHMEM config HIGHPTE bool "Allocate 2nd-level pagetables from highmem" depends on HIGHMEM + 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 + precious low memory, eventually leading to low memory being + consumed by page tables. Setting this option will allow + user-space 2nd level page tables to reside in high memory. config HW_PERF_EVENTS bool "Enable hardware performance counter support for perf events" |