path: root/include/asm-x86/e820_64.h
diff options
authorYinghai Lu <yhlu.kernel.send@gmail.com>2008-03-18 16:44:19 -0700
committerIngo Molnar <mingo@elte.hu>2008-03-21 17:06:15 +0100
commit5dca6a1bb014875a17289fdaae8c31e0a3641c99 (patch)
treec6cb1eab44e92cedbfcee707de6ed2ad960e20e6 /include/asm-x86/e820_64.h
parentx86: fix reboot problem with Dell Optiplex 745, 0KW626 board (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/e820_64.h')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-x86/e820_64.h b/include/asm-x86/e820_64.h
index a560c4f5d500..22ede73ae724 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);