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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-03-03 05:30:03 +0300
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-03-03 05:30:03 +0300
commit652e8f8d579d61745094e36b4ff085026a332e73 (patch)
tree44145576f9cdf0b777dee0d0961f5499ea88bec8 /arch/powerpc/Kconfig
parent501cb16d3cfdcca99ac26fe122079f2a43b046b8 (diff)
parent6c7120902305b3a21460cd2f0f917a39307df566 (diff)
downloadlinux-652e8f8d579d61745094e36b4ff085026a332e73.tar.xz
Merge commit 'jwb/next' into next
Diffstat (limited to 'arch/powerpc/Kconfig')
-rw-r--r--arch/powerpc/Kconfig27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index d11896b445b6..5c10af66fb51 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -410,6 +410,18 @@ config PPC_HAS_HASH_64K
depends on PPC64
default n
+config STDBINUTILS
+ bool "Using standard binutils settings"
+ depends on 44x
+ default y
+ help
+ Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
+ Note, that kernel will be able to run only those applications,
+ which had been compiled using binutils later than 2.17.50.0.3 with
+ '-zmax-page-size' set to 256K (the default is 64K). Or, if using
+ the older binutils, you can patch them with a trivial patch, which
+ changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
+
choice
prompt "Page size"
default PPC_4K_PAGES
@@ -445,6 +457,19 @@ config PPC_64K_PAGES
bool "64k page size" if 44x || PPC_STD_MMU_64
select PPC_HAS_HASH_64K if PPC_STD_MMU_64
+config PPC_256K_PAGES
+ bool "256k page size" if 44x
+ depends on !STDBINUTILS && (!SHMEM || BROKEN)
+ help
+ Make the page size 256k.
+
+ As the ELF standard only requires alignment to support page
+ sizes up to 64k, you will need to compile all of your user
+ space applications with a non-standard binutils settings
+ (see the STDBINUTILS description for details).
+
+ Say N unless you know what you are doing.
+
endchoice
config FORCE_MAX_ZONEORDER
@@ -457,6 +482,8 @@ config FORCE_MAX_ZONEORDER
default "9" if PPC_STD_MMU_32 && PPC_16K_PAGES
range 7 64 if PPC_STD_MMU_32 && PPC_64K_PAGES
default "7" if PPC_STD_MMU_32 && PPC_64K_PAGES
+ range 5 64 if PPC_STD_MMU_32 && PPC_256K_PAGES
+ default "5" if PPC_STD_MMU_32 && PPC_256K_PAGES
range 11 64
default "11"
help