Re: [PATCH] (1/2) x440 discontig support on 2.5.62: early, early ioremap

From: Dave Hansen (haveblue@us.ibm.com)
Date: Wed Feb 19 2003 - 13:28:42 EST

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In reply to: Patricia Gaughen: "[PATCH] (1/2) x440 discontig support on 2.5.62: early, early ioremap"
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Patricia Gaughen wrote:
> This patch was written by Dave Hansen, I just brought it forward to
> 2.5.62 :-)
>
> This patch is used by the x440 discontigmem to map the srat tables
> into low memory so that the memory can be setup. This remap function
> is used very early in the boot process... at the start of
> setup_arch().
>
> Dave posted this previously to linux-kernel. Here's a pointer to his
> email:
> http://marc.theaimsgroup.com/?l=linux-kernel&m=104515534619345&w=2

Here's a patch that makes the early ioremap conditional on Summit, and
NUMA.

-- Dave Hansen haveblue@us.ibm.com

diff -ur linux-2.5.62-disco/arch/i386/Kconfig linux-2.5.62-disco.new/arch/i386/Kconfig --- linux-2.5.62-disco/arch/i386/Kconfig Wed Feb 19 10:14:34 2003 +++ linux-2.5.62-disco.new/arch/i386/Kconfig Wed Feb 19 10:24:43 2003 @@ -754,6 +754,13 @@ depends on (SMP || PREEMPT) && X86_CMPXCHG default y +# turning this on wastes a bunch of space. +# Summit needs it only when NUMA is on +config BOOT_IOREMAP + bool + depends on (X86_SUMMIT && NUMA) + default y + endmenu Only in linux-2.5.62-disco.new/arch/i386: Kconfig~ diff -ur linux-2.5.62-disco/arch/i386/mm/Makefile linux-2.5.62-disco.new/arch/i386/mm/Makefile --- linux-2.5.62-disco/arch/i386/mm/Makefile Wed Feb 19 10:14:30 2003 +++ linux-2.5.62-disco.new/arch/i386/mm/Makefile Wed Feb 19 10:15:42 2003 @@ -2,8 +2,9 @@ # Makefile for the linux i386-specific parts of the memory manager. # -obj-y := init.o pgtable.o fault.o ioremap.o extable.o pageattr.o boot_ioremap.o +obj-y := init.o pgtable.o fault.o ioremap.o extable.o pageattr.o obj-$(CONFIG_DISCONTIGMEM) += discontig.o obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o obj-$(CONFIG_HIGHMEM) += highmem.o +obj-$(CONFIG_BOOT_IOREMAP) += boot_ioremap.o Only in linux-2.5.62-disco.new/scripts: elfconfig.h

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Next message: Mitchell Blank Jr: "Re: [PATCH][2.5] convert atm_dev_lock from spinlock to semaphore"
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In reply to: Patricia Gaughen: "[PATCH] (1/2) x440 discontig support on 2.5.62: early, early ioremap"
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