| Message ID | 20180117133106.30518-1-Eugeniy.Paltsev@synopsys.com |
|---|---|
| State | New |
| Headers | show |
| Series | ARC: ARCv2: CACHE: fix slc_entire_op: flush only instead of flush-n-inv | expand |
diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c index 55c3de2..5cb647c 100644 --- a/arch/arc/mm/cache.c +++ b/arch/arc/mm/cache.c @@ -787,7 +787,10 @@ noinline static void slc_entire_op(const int op) write_aux_reg(r, ctrl); - write_aux_reg(ARC_REG_SLC_INVALIDATE, 1); + if (op & OP_INV) /* Inv or flush-n-inv use same cmd reg */ + write_aux_reg(ARC_REG_SLC_INVALIDATE, 0x1); + else + write_aux_reg(ARC_REG_SLC_FLUSH, 0x1); /* Make sure "busy" bit reports correct stataus, see STAR 9001165532 */ read_aux_reg(r);
As for today slc_entire_op with OP_FLUSH command flush and invalidate SLC entry instead of flush only. Fix that. NOTE: As for today we use slc_entire_op only with OP_FLUSH_N_INV command, so it is kinda preventiv fix. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> --- arch/arc/mm/cache.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)