diff options
| author | Hirokazu Takata <takata@linux-m32r.org> | 2005-03-28 03:44:35 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-03-28 03:44:35 -0800 |
| commit | 0dd0dcc00253eaa6216105f74c9c13d2cedbf4f6 (patch) | |
| tree | 9f46a068e08fcef152df2e8f2482b862a54ce6af | |
| parent | d53024dd7928f1b7d503d4c8d5d47e8f233c8063 (diff) | |
[PATCH] m32r: Fix M32102 I-cache invalidation
This patch fixes I-cache invalidation operation for M32102 chip, which is
one of m32r MMU-less targets.
Before this fix, the m32r kernel for M32102 chip missed I-cache
invalidation operation and switched off I-cache unintentionally. This bug
caused awful performance degradation.
Signed-off-by: Mamoru Sakugawa <sakugawa@linux-m32r.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/m32r/mm/cache.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/m32r/mm/cache.c b/arch/m32r/mm/cache.c index e2dd92d69380..31b0789c1992 100644 --- a/arch/m32r/mm/cache.c +++ b/arch/m32r/mm/cache.c @@ -4,8 +4,6 @@ * Copyright (C) 2002 Hirokazu Takata */ -/* $Id$ */ - #include <linux/config.h> #include <asm/pgtable.h> @@ -25,8 +23,8 @@ #define MCCR_DCACHE_CBINV (MCCR_CC|MCCR_DIV|MCCR_DCB) #define CHECK_MCCR(mccr) (mccr = *MCCR) #elif defined(CONFIG_CHIP_M32102) -#define MCCR ((volatile unsigned long*)0xfffffffc) -#define MCCR_IIV (1UL << 8) /* I-cache invalidate */ +#define MCCR ((volatile unsigned char*)0xfffffffe) +#define MCCR_IIV (1UL << 0) /* I-cache invalidate */ #define MCCR_ICACHE_INV MCCR_IIV #endif /* CONFIG_CHIP_XNUX2 || CONFIG_CHIP_M32700 */ @@ -65,4 +63,3 @@ void _flush_cache_copyback_all(void) #endif } - |