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authorJan Beulich <jbeulich@novell.com>2008-07-18 13:29:00 +0100
committerH. Peter Anvin <hpa@zytor.com>2008-07-18 16:17:52 -0700
commit48fe4a76e27dc64b47f3d2a2af2b6bbf2b2f5b6b (patch)
tree46649973dcd6bd5f1a7027730c6f824264b0059a
parent50515af207d410c9f228380e529c56f43c3de0bd (diff)
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>
-rw-r--r--include/asm-x86/fixmap_32.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-x86/fixmap_32.h b/include/asm-x86/fixmap_32.h
index aae2f0501a4..f1ac2b2167d 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