commit 5dca6a1bb014875a17289fdaae8c31e0a3641c99
author Yinghai Lu <yhlu.kernel.send@gmail.com> Tue Mar 18 16:44:19 2008 -0700
committer Ingo Molnar <mingo@elte.hu> Fri Mar 21 17:06:15 2008 +0100
tree c6cb1eab44e92cedbfcee707de6ed2ad960e20e6
parent fc1c8925c8210009c1fc5d909d189252d8fb4fb2

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>

include/asm-x86/e820_32.h

diff --git a/include/asm-x86/e820_32.h b/include/asm-x86/e820_32.h
index f1da7eb..e7207a6 100644
--- a/include/asm-x86/e820_32.h
+++ b/include/asm-x86/e820_32.h
@@ -28,6 +28,8 @@
 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);