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[Qemu-devel] [PATCH v13 25/25] icount: clean up cpu_can_io before jumpin
From: |
Pavel Dovgalyuk |
Subject: |
[Qemu-devel] [PATCH v13 25/25] icount: clean up cpu_can_io before jumping to the next block |
Date: |
Thu, 21 Feb 2019 14:06:26 +0300 |
User-agent: |
StGit/0.17.1-dirty |
Most of IO instructions can be executed only at the end of the block in
icount mode. Therefore translator can set cpu_can_io flag when translating
the last instruction.
But when the blocks are chained, then this flag is not reset and may
remain set at the beginning of the next block.
This patch resets the flag before "chaining" the translation blocks.
Signed-off-by: Pavel Dovgalyuk <address@hidden>
---
accel/tcg/tcg-runtime.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/accel/tcg/tcg-runtime.c b/accel/tcg/tcg-runtime.c
index d0d4484406..5871f5aba2 100644
--- a/accel/tcg/tcg-runtime.c
+++ b/accel/tcg/tcg-runtime.c
@@ -151,6 +151,8 @@ void *HELPER(lookup_tb_ptr)(CPUArchState *env)
target_ulong cs_base, pc;
uint32_t flags;
+ /* We are going to jump to the next block. can_do_io should be reset */
+ cpu->can_do_io = !use_icount;
tb = tb_lookup__cpu_state(cpu, &pc, &cs_base, &flags, curr_cflags());
if (tb == NULL) {
return tcg_ctx->code_gen_epilogue;
- [Qemu-devel] [PATCH v13 14/25] replay: refine replay-time module, (continued)
- [Qemu-devel] [PATCH v13 14/25] replay: refine replay-time module, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 18/25] replay: describe reverse debugging in docs/replay.txt, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 15/25] replay: flush rr queue before loading the vmstate, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 17/25] gdbstub: add reverse continue support in replay mode, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 19/25] replay: add BH oneshot event for block layer, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 20/25] replay: init rtc after enabling the replay, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 21/25] replay: document development rules, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 22/25] util/qemu-timer: refactor deadline calculation for external timers, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 23/25] replay: fix replay shutdown, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 24/25] replay: rename step-related variables and functions, Pavel Dovgalyuk, 2019/02/21
- [Qemu-devel] [PATCH v13 25/25] icount: clean up cpu_can_io before jumping to the next block,
Pavel Dovgalyuk <=