diff options
| author | Nick Piggin <npiggin@suse.de> | 2008-10-22 12:33:16 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-22 13:30:12 +0200 |
| commit | 9e899816d126cc6f7d405c349f65363214fe7399 (patch) | |
| tree | a28f4c6357aa987ccfd8faf4f03dbb0005153451 /arch | |
| parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) | |
x86, mm: enable GBPAGES option by default
DIRECT_GBPAGES was under DEBUG_KERNEL && EXPERIMENTAL and disabled by default.
Turn it on by default and put it under EMBEDDED.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/Kconfig | 9 | ||||
| -rw-r--r-- | arch/x86/Kconfig.debug | 12 |
2 files changed, 9 insertions, 12 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5b9b12321ad..c00aefcb47d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -946,6 +946,15 @@ config X86_PAE config ARCH_PHYS_ADDR_T_64BIT def_bool X86_64 || X86_PAE +config DIRECT_GBPAGES + bool "Enable 1GB pages for kernel pagetables" if EMBEDDED + default y + depends on X86_64 + help + Allow the kernel linear mapping to use 1GB pages on CPUs that + support it. This can improve the kernel's performance a tiny bit by + reducing TLB pressure. If in doubt, say "Y". + # Common NUMA Features config NUMA bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)" diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index 2a3dfbd5e67..567fe543e09 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -114,18 +114,6 @@ config DEBUG_RODATA data. This is recommended so that we can catch kernel bugs sooner. If in doubt, say "Y". -config DIRECT_GBPAGES - bool "Enable gbpages-mapped kernel pagetables" - depends on DEBUG_KERNEL && EXPERIMENTAL && X86_64 - help - Enable gigabyte pages support (if the CPU supports it). This can - improve the kernel's performance a tiny bit by reducing TLB - pressure. - - This is experimental code. - - If in doubt, say "N". - config DEBUG_RODATA_TEST bool "Testcase for the DEBUG_RODATA feature" depends on DEBUG_RODATA |