Physically indexed caches cannot suffer from virtual aliasing, so clear
the MIPS_CACHE_ALIASES bit in order to ensure we don't do extra work
avoiding aliasing that cannot happen.
Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
---
arch/mips/mm/c-r4k.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 7a64a8a81..d519c9e 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1311,6 +1311,10 @@ static void probe_pcache(void)
c->dcache.flags |= MIPS_CACHE_ALIASES;
}
+ /* Physically indexed caches don't suffer from virtual aliasing */
+ if (c->dcache.flags & MIPS_CACHE_PINDEX)
+ c->dcache.flags &= ~MIPS_CACHE_ALIASES;
+
switch (current_cpu_type()) {
case CPU_20KC:
/*
--
2.9.3
