diff options
| author | Jan Beulich <jbeulich@novell.com> | 2008-07-18 16:29:00 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-07-19 03:17:52 +0400 |
| commit | 48fe4a76e27dc64b47f3d2a2af2b6bbf2b2f5b6b (patch) | |
| tree | 46649973dcd6bd5f1a7027730c6f824264b0059a /include/asm-x86/fixmap_32.h | |
| parent | 50515af207d410c9f228380e529c56f43c3de0bd (diff) | |
| download | linux-48fe4a76e27dc64b47f3d2a2af2b6bbf2b2f5b6b.tar.xz | |
x86: i386: reduce boot fixmap space
As 256 entries are needed, aligning to a 256-entry boundary is
sufficient and still guarantees the single pte table requirement.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'include/asm-x86/fixmap_32.h')
| -rw-r--r-- | include/asm-x86/fixmap_32.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-x86/fixmap_32.h b/include/asm-x86/fixmap_32.h index aae2f0501a40..f1ac2b2167d7 100644 --- a/include/asm-x86/fixmap_32.h +++ b/include/asm-x86/fixmap_32.h @@ -90,13 +90,13 @@ enum fixed_addresses { * 256 temporary boot-time mappings, used by early_ioremap(), * before ioremap() is functional. * - * We round it up to the next 512 pages boundary so that we + * We round it up to the next 256 pages boundary so that we * can have a single pgd entry and a single pte table: */ #define NR_FIX_BTMAPS 64 #define FIX_BTMAPS_NESTING 4 - FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 512 - - (__end_of_permanent_fixed_addresses & 511), + FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 256 - + (__end_of_permanent_fixed_addresses & 255), FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_NESTING - 1, FIX_WP_TEST, #ifdef CONFIG_ACPI |