diff options
| author | Yinghai Lu <yhlu.kernel.send@gmail.com> | 2008-03-18 16:44:19 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-03-21 17:06:15 +0100 |
| commit | 5dca6a1bb014875a17289fdaae8c31e0a3641c99 (patch) | |
| tree | c6cb1eab44e92cedbfcee707de6ed2ad960e20e6 /include/asm-x86 | |
| parent | fc1c8925c8210009c1fc5d909d189252d8fb4fb2 (diff) | |
x86: trim mtrr don't close gap for resource allocation.
fix the bug reported here:
http://bugzilla.kernel.org/show_bug.cgi?id=10232
use update_memory_range() instead of add_memory_range() directly
to avoid closing the gap.
( the new code only affects and runs on systems where the MTRR
workaround triggers. )
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86')
| -rw-r--r-- | include/asm-x86/e820_32.h | 2 | ||||
| -rw-r--r-- | include/asm-x86/e820_64.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-x86/e820_32.h b/include/asm-x86/e820_32.h index f1da7ebd190..e7207a6de3e 100644 --- a/include/asm-x86/e820_32.h +++ b/include/asm-x86/e820_32.h @@ -28,6 +28,8 @@ extern void find_max_pfn(void); extern void register_bootmem_low_pages(unsigned long max_low_pfn); extern void add_memory_region(unsigned long long start, unsigned long long size, int type); +extern void update_memory_range(u64 start, u64 size, unsigned old_type, + unsigned new_type); extern void e820_register_memory(void); extern void limit_regions(unsigned long long size); extern void print_memory_map(char *who); diff --git a/include/asm-x86/e820_64.h b/include/asm-x86/e820_64.h index a560c4f5d50..22ede73ae72 100644 --- a/include/asm-x86/e820_64.h +++ b/include/asm-x86/e820_64.h @@ -18,6 +18,8 @@ extern unsigned long find_e820_area(unsigned long start, unsigned long end, unsigned size, unsigned long align); extern void add_memory_region(unsigned long start, unsigned long size, int type); +extern void update_memory_range(u64 start, u64 size, unsigned old_type, + unsigned new_type); extern void setup_memory_region(void); extern void contig_e820_setup(void); extern unsigned long e820_end_of_ram(void); |