Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9f8305...
Commit: 9f8305fe164077bcef42034c56275c8208042e88
Parent: 4480f15b3306f43bbb0310d461142b4e897ca45b
Author: Jan Beulich <jbeulich@novell.com>
AuthorDate: Fri Aug 29 13:14:30 2008 +0100
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Mon Oct 13 10:19:52 2008 +0200
x86-64: reduce boot fixmap space
Just like for 32-bit - as 256 entries are needed, aligning to a
256-entry boundary is sufficient and still guarantees the single pte
table requirement.
Likewise move up __end_of_permanent_fixed_addresses, to match 32-bit.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
include/asm-x86/fixmap_64.h | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/asm-x86/fixmap_64.h b/include/asm-x86/fixmap_64.h
index dafb24b..33df64f 100644
--- a/include/asm-x86/fixmap_64.h
+++ b/include/asm-x86/fixmap_64.h
@@ -49,6 +49,7 @@ enum fixed_addresses {
#ifdef CONFIG_PARAVIRT
FIX_PARAVIRT_BOOTMAP,
#endif
+ __end_of_permanent_fixed_addresses,
#ifdef CONFIG_ACPI
FIX_ACPI_BEGIN,
FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1,
@@ -56,18 +57,17 @@ enum fixed_addresses {
#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
FIX_OHCI1394_BASE,
#endif
- __end_of_permanent_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,
__end_of_fixed_addresses
};
--
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