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Message-Id: <20060826105639.5680429d.kamezawa.hiroyu@jp.fujitsu.com>
Date: Sat, 26 Aug 2006 10:56:39 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To: "Randy.Dunlap" <rdunlap@...otime.net>
Cc: kmannth@...il.com, linux-kernel@...r.kernel.org, akpm@...l.org
Subject: Re: another NUMA build error
On Fri, 25 Aug 2006 16:01:15 -0700
"Randy.Dunlap" <rdunlap@...otime.net> wrote:
> > I thought there was a patch fix a while ago to fix this build issue.
> > If you want to anything that includes the SUMMIT sub arch you need
> > CONFIG_ACPI_SRAT.
> >
> > Option 1 is a good solution as only NUMAQ and ACPI_SRAT have tables
> > that are used to setup NUMA in the kernel.
> >
> > > OK, I prefer option 2 because it is more generic (not hardware-
> > > specific). Someone else can prefer option 1 because it is
> > > hardware-specific. :)
> >
> > I guess I am that other person. Really you only want/need NUMA if you
> > have ACPI_SRAT (Summit) or NUMAQ.
>
> That's fine. Any fix is OK with me, as long as a .config
> won't generate a build error.
>
Hmm... is this the way to go ?
Keith-san, please ack if Okay.
-Kame
--
When we select NUMA with i386, the system is only X86_NUMAQ or using ACPI.
Signed-Off-By: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Index: linux-2.6.18-rc4/arch/i386/Kconfig
===================================================================
--- linux-2.6.18-rc4.orig/arch/i386/Kconfig
+++ linux-2.6.18-rc4/arch/i386/Kconfig
@@ -142,6 +142,7 @@ config X86_SUMMIT
In particular, it is needed for the x440.
If you don't have one of these computers, you should say N here.
+ If you want to build NUMA kernel, you have to select ACPI
config X86_BIGSMP
bool "Support for other sub-arch SMP systems with more than 8 CPUs"
@@ -169,6 +170,7 @@ config X86_GENERICARCH
help
This option compiles in the Summit, bigsmp, ES7000, default subarchitectures.
It is intended for a generic binary kernel.
+ if you want NUMA kernel, select ACPI. we need SRAT for build NUMA
config X86_ES7000
bool "Support for Unisys ES7000 IA32 series"
@@ -542,7 +544,7 @@ config X86_PAE
# Common NUMA Features
config NUMA
bool "Numa Memory Allocation and Scheduler Support"
- depends on SMP && HIGHMEM64G && (X86_NUMAQ || X86_GENERICARCH || (X86_SUMMIT && ACPI))
+ depends on SMP && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI)
default n if X86_PC
default y if (X86_NUMAQ || X86_SUMMIT)
-
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