[Qemu-devel] [PATCH for-2.10 2/3] target/mips: Drop redundant gen_io_start/stop()

[James Hogan]

DMTC0 CP0_Cause does a redundant gen_io_start() and gen_io_end() pair,
even though this is done for all DMTC0 operations outside of the switch
statement. Remove these redundant calls.

Fixes: 5dc5d9f055c5 ("mips: more fixes to the MIPS interrupt glue logic")
Signed-off-by: James Hogan <address@hidden>
Cc: Yongbok Kim <address@hidden>
Cc: Aurelien Jarno <address@hidden>
---
 target/mips/translate.c | 8 --------
 1 file changed, 0 insertions(+), 8 deletions(-)

diff --git a/target/mips/translate.c b/target/mips/translate.c
index 6b41f7b65e00..6e724ac71dcd 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -7403,15 +7403,7 @@ static void gen_dmtc0(DisasContext *ctx, TCGv arg, int 
reg, int sel)
         switch (sel) {
         case 0:
             save_cpu_state(ctx, 1);
-            /* Mark as an IO operation because we may trigger a software
-               interrupt.  */
-            if (ctx->tb->cflags & CF_USE_ICOUNT) {
-                gen_io_start();
-            }
             gen_helper_mtc0_cause(cpu_env, arg);
-            if (ctx->tb->cflags & CF_USE_ICOUNT) {
-                gen_io_end();
-            }
             /* Stop translation as we may have triggered an intetrupt. BS_STOP
              * isn't sufficient, we need to ensure we break out of translated
              * code to check for pending interrupts.  */
-- 
git-series 0.8.10