Messages in this thread | | | Date | Fri, 07 Nov 2008 17:13:11 -0500 | From | Chris Snook <> | Subject | Re: [PATCH] change CONFIG_NUMA description |
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Ingo Molnar wrote: > * KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote: > >> CONFIG_NUMA description talk about a bit old thing. >> So, following changes are better. >> >> o CONFIG_NUMA is no longer EXPERIMENTAL o Opteron is not the only >> processor of NUMA topology on x86_64 no longer, but also Intel >> Core7i has it. >> >> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> >> --- >> arch/x86/Kconfig | 7 +++---- >> 1 file changed, 3 insertions(+), 4 deletions(-) > > applied to tip/x86/doc, thanks! I've updated a few other details as > well, see the final commit below. > > Ingo > > -------------> > From fd51b2d7d5df932767b89e00d0871a38a2c53e74 Mon Sep 17 00:00:00 2001 > From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> > Date: Wed, 5 Nov 2008 02:27:19 +0900 > Subject: [PATCH] x86: update CONFIG_NUMA description > > Impact: clarify/update CONFIG_NUMA text > > CONFIG_NUMA description talk about a bit old thing. > So, following changes are better. > > o CONFIG_NUMA is no longer EXPERIMENTAL > > o Opteron is not the only processor of NUMA topology on x86_64 no longer, > but also Intel Core7i has it. > > Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> > Signed-off-by: Ingo Molnar <mingo@elte.hu> > --- > arch/x86/Kconfig | 16 ++++++++++------ > 1 files changed, 10 insertions(+), 6 deletions(-) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index 350bee1..38ae04b 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -951,22 +951,26 @@ config ARCH_PHYS_ADDR_T_64BIT > > # Common NUMA Features > config NUMA > - bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)" > + bool "Numa Memory Allocation and Scheduler Support" > depends on SMP > depends on X86_64 || (X86_32 && HIGHMEM64G && (X86_NUMAQ || X86_BIGSMP || X86_SUMMIT && ACPI) && EXPERIMENTAL) > default n if X86_PC > default y if (X86_NUMAQ || X86_SUMMIT || X86_BIGSMP) > help > Enable NUMA (Non Uniform Memory Access) support. > + > The kernel will try to allocate memory used by a CPU on the > local memory controller of the CPU and add some more > NUMA awareness to the kernel. > > - For 32-bit this is currently highly experimental and should be only > - used for kernel development. It might also cause boot failures. > - For 64-bit this is recommended on all multiprocessor Opteron systems. > - If the system is EM64T, you should say N unless your system is > - EM64T NUMA. > + For 64-bit this is recommended if the system is Intel Core 7i > + (or later), AMD Opteron, or EM64T NUMA. > + > + For 32-bit this is only needed on (rare) 32-bit-only platforms > + that support NUMA topologies, such as NUMAQ / Summit, or if you > + boot a 32-bit kernel on a 64-bit NUMA platform. > + > + Otherwise, you should say N. > > comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI" > depends on X86_32 && X86_SUMMIT && (!HIGHMEM64G || !ACPI)
Core i7, not Core 7i.
-- Chris
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