Without cacheflush,qemu sometimes fail with segment fault on loongson
cpu,which often happens when linux begin to run init.Because user
porgram tlb refill,tlbl,tlbs,tlbm exception will often happen,
cpu_restore_state,tcg_gen_code-pc will be called frequently.
Signed-off-by: qiaochong <qiaoch...@loongson.cn>
---
tcg/tcg.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/tcg/tcg.c b/tcg/tcg.c
index e0a9030..b5e274c 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -2120,7 +2120,12 @@ int tcg_gen_code(TCGContext *s, uint8_t *gen_code_buf)
Return -1 if not found. */
int tcg_gen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset)
{
- return tcg_gen_code_common(s, gen_code_buf, offset);
+ int ret;
+ ret = tcg_gen_code_common(s, gen_code_buf, offset);
+ /* flush instruction cache */
+ flush_icache_range((unsigned long)gen_code_buf,
+ (unsigned long)s->code_ptr);
+ return ret;
}
#ifdef CONFIG_PROFILER
--
1.7.0.3.dirty
