Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9af993a92623e022c176459fa6607a564b9a7eaf
Commit: 9af993a92623e022c176459fa6607a564b9a7eaf
Parent: 0879750f5d75dee0546316b7b0e83fb6cd258ad7
Author: Ingo Molnar <[EMAIL PROTECTED]>
AuthorDate: Wed Jan 30 13:34:09 2008 +0100
Committer: Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 13:34:09 2008 +0100
x86: make ioremap() UC by default
Yes! A mere 120 c_p_a() fixing and rewriting patches later,
we are now confident that we can enable UC by default for
ioremap(), on x86 too.
Every other architectures was doing this already. Doing so
makes Linux more robust against MTRR mixups (which might go
unnoticed if BIOS writers test other OSs only - where PAT
might override bad MTRRs defaults).
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
---
include/asm-x86/io_64.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/asm-x86/io_64.h b/include/asm-x86/io_64.h
index ee7a5c9..f64a59c 100644
--- a/include/asm-x86/io_64.h
+++ b/include/asm-x86/io_64.h
@@ -166,7 +166,7 @@ extern void __iomem *ioremap_cache(unsigned long offset,
unsigned long size);
*/
static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
{
- return ioremap_cache(offset, size);
+ return ioremap_nocache(offset, size);
}
extern void iounmap(volatile void __iomem *addr);
-
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