diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2006-09-27 18:33:49 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2006-09-27 18:33:49 +0900 |
| commit | 19f9a34f87c48bbd270d617d1c986d0c23866a1a (patch) | |
| tree | 19f32122aec9c16cbbf8e3331e81040a4850cb8d /arch/sh/mm/Kconfig | |
| parent | 8c12b5dc13bf8516303a8224ab4e9708b33d5b00 (diff) | |
sh: Initial vsyscall page support.
This implements initial support for the vsyscall page on SH.
At the moment we leave it configurable due to having nommu
to support from the same code base. We hook it up for the
signal trampoline return at present, with more to be added
later, once uClibc catches up.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm/Kconfig')
| -rw-r--r-- | arch/sh/mm/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index b445d02075e..9dd606464d2 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -223,6 +223,19 @@ config 32BIT 32-bits through the SH-4A PMB. If this is not set, legacy 29-bit physical addressing will be used. +config VSYSCALL + bool "Support vsyscall page" + depends on MMU + default y + help + This will enable support for the kernel mapping a vDSO page + in process space, and subsequently handing down the entry point + to the libc through the ELF auxiliary vector. + + From the kernel side this is used for the signal trampoline. + For systems with an MMU that can afford to give up a page, + (the default value) say Y. + choice prompt "HugeTLB page size" depends on HUGETLB_PAGE && CPU_SH4 && MMU |