Messages in this thread | | | Date | Tue, 10 Jan 2006 10:37:11 -0700 | From | "Jeff V. Merkey" <> | Subject | Re: [PATCH ] VMSPLIT config options (with default config fixed) |
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Mark Lord wrote:
Looks good. I'll try this one.
Jeff
> Okay, fixed the ordering of the "default" lines > so that the Kconfig actually works correctly. > > Best for Andrew to soak this one in -mm. > > Signed-off-by: Mark Lord <mlord@pobox.com> > > diff -u --recursive --new-file --exclude='.*' > linux-2.6.15/arch/i386/Kconfig linux/arch/i386/Kconfig > --- linux-2.6.15/arch/i386/Kconfig 2006-01-02 22:21:10.000000000 -0500 > +++ linux/arch/i386/Kconfig 2006-01-10 12:02:40.000000000 -0500 > @@ -448,6 +448,43 @@ > > endchoice > > +choice > + depends on EXPERIMENTAL && !X86_PAE > + prompt "Memory split" > + default VMSPLIT_3G > + help > + Select the desired split between kernel and user memory. > + > + If the address range available to the kernel is less than the > + physical memory installed, the remaining memory will be available > + as "high memory". Accessing high memory is a little more costly > + than low memory, as it needs to be mapped into the kernel first. > + Note that increasing the kernel address space limits the range > + available to user programs, making the address space there > + tighter. Selecting anything other than the default 3G/1G split > + will also likely make your kernel incompatible with binary-only > + kernel modules. > + > + If you are not absolutely sure what you are doing, leave this > + option alone! > + > + config VMSPLIT_3G > + bool "3G/1G user/kernel split" > + config VMSPLIT_3G_OPT > + bool "3G/1G user/kernel split (for full 1G low memory)" > + config VMSPLIT_2G > + bool "2G/2G user/kernel split" > + config VMSPLIT_1G > + bool "1G/3G user/kernel split" > +endchoice > + > +config PAGE_OFFSET > + hex > + default 0xB0000000 if VMSPLIT_3G_OPT > + default 0x78000000 if VMSPLIT_2G > + default 0x40000000 if VMSPLIT_1G > + default 0xC0000000 > + > config HIGHMEM > bool > depends on HIGHMEM64G || HIGHMEM4G > diff -u --recursive --new-file --exclude='.*' > linux-2.6.15/include/asm-i386/page.h linux/include/asm-i386/page.h > --- linux-2.6.15/include/asm-i386/page.h 2006-01-02 22:21:10.000000000 > -0500 > +++ linux/include/asm-i386/page.h 2006-01-10 12:04:56.000000000 -0500 > @@ -110,10 +110,10 @@ > #endif /* __ASSEMBLY__ */ > > #ifdef __ASSEMBLY__ > -#define __PAGE_OFFSET (0xC0000000) > +#define __PAGE_OFFSET CONFIG_PAGE_OFFSET > #define __PHYSICAL_START CONFIG_PHYSICAL_START > #else > -#define __PAGE_OFFSET (0xC0000000UL) > +#define __PAGE_OFFSET ((unsigned long)CONFIG_PAGE_OFFSET) > #define __PHYSICAL_START ((unsigned long)CONFIG_PHYSICAL_START) > #endif > #define __KERNEL_START (__PAGE_OFFSET + __PHYSICAL_START) > - > 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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