Hello.
On 29-01-2014 17:10, Markos Chandras wrote:
The *Aptiv cores can use the CONF7/IAR bit to detect if the core
has hardware support to remove instruction cache aliasing.
Signed-off-by: Markos Chandras <markos.chandras@xxxxxxxxxx>
---
This patch is for the upstream-sfr/mips-for-linux-next tree
[...]
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 13b549a..e790524 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1110,7 +1110,10 @@ static void probe_pcache(void)
case CPU_PROAPTIV:
if (current_cpu_type() == CPU_74K)
alias_74k_erratum(c);
- if ((read_c0_config7() & (1 << 16))) {
+ if (!(read_c0_config7() & MIPS_CONF7_IAR))
+ if (c->icache.waysize > PAGE_SIZE)
Why not fold these to a single *if*?
+ c->icache.flags |= MIPS_CACHE_ALIASES;
+ if (read_c0_config7() & MIPS_CONF7_AR) {
You didn't document this change. Ideally, it should be in a separate patch.
WBR, Sergei
