From 88253e845996670f56635b054550fa45e1fec3d8 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 20 Apr 2010 15:37:23 +0900 Subject: sh: Zero out aliases counter when using SH-X3 hardware assistance. This zeroes out the number of cache aliases in the cache info descriptors when hardware alias avoidance is enabled. This cuts down on the amount of flushing taken care of by common code, and also permits coherency control to be disabled for the single CPU and 4k page size case. Signed-off-by: Paul Mundt --- arch/sh/mm/cache-shx3.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'arch/sh/mm') diff --git a/arch/sh/mm/cache-shx3.c b/arch/sh/mm/cache-shx3.c index 65936c4..c0adbee 100644 --- a/arch/sh/mm/cache-shx3.c +++ b/arch/sh/mm/cache-shx3.c @@ -21,9 +21,18 @@ void __init shx3_cache_init(void) ccr = __raw_readl(CCR); - if (boot_cpu_data.dcache.n_aliases) + /* + * If we've got cache aliases, resolve them in hardware. + */ + if (boot_cpu_data.dcache.n_aliases || boot_cpu_data.icache.n_aliases) { ccr |= CCR_CACHE_SNM; + boot_cpu_data.icache.n_aliases = 0; + boot_cpu_data.dcache.n_aliases = 0; + + pr_info("Enabling hardware synonym avoidance\n"); + } + #ifdef CONFIG_SMP /* * Broadcast I-cache block invalidations by default. -- cgit v1.1