Messages in this thread Patches in this message |  | | From | Steven Cole <> | Subject | Re: [PATCH] 2.5.5-dj2, modify arch/i386/Config.help for highpte options. | Date | Thu, 28 Feb 2002 15:32:48 -0700 |
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On Thursday 28 February 2002 02:01 pm, Dave Jones wrote: > On Thu, Feb 28, 2002 at 12:12:51PM -0700, Steven Cole wrote: > > Here is a snippet from arch/i386/config.in both 2.5.5-dj2 and > > 2.5.6-pre1: choice 'High Memory Support' \ > > "off CONFIG_NOHIGHMEM \ > > 4GB CONFIG_HIGHMEM4G \ > > 4GB-highpte CONFIG_HIGHMEM4G_HIGHPTE \ > > 64GB CONFIG_HIGHMEM64G \ > > 64GB-highpte CONFIG_HIGHMEM64G_HIGHPTE" off > > Would this not be better done using a "use highpte" bool in > the !CONFIG_NOHIGHMEM case ?
Maybe. Here is a patch to arch/i386/config.in to try it that way.
Ingo, is this OK?
After the first patch, is another small patch to arch/i386/Config.help which provides some explanation of CONFIG_HIGHPTE, which I hope is not too inaccurate. This supercedes the original change to arch/i386/Config.help.
Steven
--- linux-2.5.5-dj2/arch/i386/config.in.orig Thu Feb 28 14:33:48 2002 +++ linux-2.5.5-dj2/arch/i386/config.in Thu Feb 28 15:20:18 2002 @@ -161,25 +161,20 @@ choice 'High Memory Support' \ "off CONFIG_NOHIGHMEM \ 4GB CONFIG_HIGHMEM4G \ - 4GB-highpte CONFIG_HIGHMEM4G_HIGHPTE \ - 64GB CONFIG_HIGHMEM64G \ - 64GB-highpte CONFIG_HIGHMEM64G_HIGHPTE" off -if [ "$CONFIG_HIGHMEM4G" = "y" ]; then - define_bool CONFIG_HIGHMEM y + 64GB CONFIG_HIGHMEM64G" off + +if [ "$CONFIG_HIGHMEM4G" = "y" -o "$CONFIG_HIGHMEM64G" = "y" ]; then + bool 'Use high memory pte support' CONFIG_HIGHPTE fi -if [ "$CONFIG_HIGHMEM4G_HIGHPTE" = "y" ]; then + +if [ "$CONFIG_HIGHMEM4G" = "y" ]; then define_bool CONFIG_HIGHMEM y - define_bool CONFIG_HIGHPTE y fi + if [ "$CONFIG_HIGHMEM64G" = "y" ]; then define_bool CONFIG_HIGHMEM y define_bool CONFIG_X86_PAE y fi -if [ "$CONFIG_HIGHMEM64G_HIGHPTE" = "y" ]; then - define_bool CONFIG_HIGHMEM y - define_bool CONFIG_HIGHPTE y - define_bool CONFIG_X86_PAE y -fi bool 'Math emulation' CONFIG_MATH_EMULATION bool 'MTRR (Memory Type Range Register) support' CONFIG_MTRR --- linux-2.5.5-dj2/arch/i386/Config.help.orig Thu Feb 28 10:58:01 2002 +++ linux-2.5.5-dj2/arch/i386/Config.help Thu Feb 28 15:07:42 2002 @@ -128,6 +128,12 @@
If unsure, say "off".
+CONFIG_HIGHPTE + The VM uses one page table entry for each page of physical memory. + For systems with a lot of RAM, this can be wasteful of precious + low memory. Setting this option will put user-space page table + entries in high memory. + CONFIG_HIGHMEM4G Select this if you have a 32-bit processor and between 1 and 4 gigabytes of physical RAM. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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