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authorMatt Fleming <matt@console-pimps.org>2009-11-05 23:14:39 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-11-09 10:45:30 +0900
commita9d244a2ff163247b607c4bb64803230ca8f8acb (patch)
tree152adba285f057c201c8d6c1993cfb19e96622f6 /arch
parent421b541110b20ccff1a7ff3245439cb24efe9812 (diff)
downloadlinux-a9d244a2ff163247b607c4bb64803230ca8f8acb.tar.bz2
sh: Account for cache aliases in flush_icache_range()
The icache may also contain aliases so we must account for them just like we do when manipulating the dcache. We usually get away with aliases in the icache because the instructions that are read from memory are read-only, i.e. they never change. However, the place where this bites us is when the code has been modified. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/sh/mm/cache-sh4.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index 519e2d16cd06..b7f235c74d66 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -72,6 +72,7 @@ static void __uses_jump_to_uncached sh4_flush_icache_range(void *args)
for (v = start; v < end; v += L1_CACHE_BYTES) {
unsigned long icacheaddr;
+ int j, n;
__ocbwb(v);
@@ -79,8 +80,10 @@ static void __uses_jump_to_uncached sh4_flush_icache_range(void *args)
cpu_data->icache.entry_mask);
/* Clear i-cache line valid-bit */
+ n = boot_cpu_data.icache.n_aliases;
for (i = 0; i < cpu_data->icache.ways; i++) {
- __raw_writel(0, icacheaddr);
+ for (j = 0; j < n; j++)
+ __raw_writel(0, icacheaddr + (j * PAGE_SIZE));
icacheaddr += cpu_data->icache.way_incr;
}
}