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    SubjectRe: [PATCH] change CONFIG_NUMA description
    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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