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authorHelge Deller <deller@parisc-linux.org>2006-04-20 20:40:23 +0000
committerKyle McMartin <kyle@hera.kernel.org>2006-04-21 22:20:34 +0000
commit2fd83038160531245099c3c5b3511fa4b80765eb (patch)
tree6145a9e78723c76ceac722eb60267c0116983c12 /arch/parisc/Kconfig
parentd668da80d613def981c573354e1853e38bd0698d (diff)
downloadop-kernel-dev-2fd83038160531245099c3c5b3511fa4b80765eb.zip
op-kernel-dev-2fd83038160531245099c3c5b3511fa4b80765eb.tar.gz
[PARISC] Further work for multiple page sizes
More work towards supporing multiple page sizes on 64-bit. Convert some assumptions that 64bit uses 3 level page tables into testing PT_NLEVELS. Also some BUG() to BUG_ON() conversions and some cleanups to assembler. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc/Kconfig')
-rw-r--r--arch/parisc/Kconfig31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 19f911c..910fb3a 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -138,6 +138,37 @@ config 64BIT
enable this option otherwise. The 64bit kernel is significantly bigger
and slower than the 32bit one.
+choice
+ prompt "Kernel page size"
+ default PARISC_PAGE_SIZE_4KB if !64BIT
+ default PARISC_PAGE_SIZE_4KB if 64BIT
+# default PARISC_PAGE_SIZE_16KB if 64BIT
+
+config PARISC_PAGE_SIZE_4KB
+ bool "4KB"
+ help
+ This lets you select the page size of the kernel. For best
+ performance, a page size of 16KB is recommended. For best
+ compatibility with 32bit applications, a page size of 4KB should be
+ selected (the vast majority of 32bit binaries work perfectly fine
+ with a larger page size).
+
+ 4KB For best 32bit compatibility
+ 16KB For best performance
+ 64KB For best performance, might give more overhead.
+
+ If you don't know what to do, choose 4KB.
+
+config PARISC_PAGE_SIZE_16KB
+ bool "16KB (EXPERIMENTAL)"
+ depends on PA8X00 && EXPERIMENTAL
+
+config PARISC_PAGE_SIZE_64KB
+ bool "64KB (EXPERIMENTAL)"
+ depends on PA8X00 && EXPERIMENTAL
+
+endchoice
+
config SMP
bool "Symmetric multi-processing support"
---help---
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