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[Qemu-devel] [PATCH for-4.1 24/24] icount: clean up cpu_can_io before ju
From: |
Pavel Dovgalyuk |
Subject: |
[Qemu-devel] [PATCH for-4.1 24/24] icount: clean up cpu_can_io before jumping to the next block |
Date: |
Mon, 22 Apr 2019 14:21:55 +0300 |
User-agent: |
StGit/0.17.1-dirty |
From: Pavel Dovgalyuk <address@hidden>
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 for-4.1 14/24] replay: refine replay-time module, (continued)
- [Qemu-devel] [PATCH for-4.1 14/24] replay: refine replay-time module, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 15/24] replay: flush rr queue before loading the vmstate, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 16/24] gdbstub: add reverse step support in replay mode, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 17/24] gdbstub: add reverse continue support in replay mode, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 18/24] replay: describe reverse debugging in docs/replay.txt, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 19/24] replay: add BH oneshot event for block layer, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 20/24] replay: document development rules, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 21/24] util/qemu-timer: refactor deadline calculation for external timers, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 22/24] replay: fix replay shutdown, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 23/24] replay: rename step-related variables and functions, Pavel Dovgalyuk, 2019/04/22
- [Qemu-devel] [PATCH for-4.1 24/24] icount: clean up cpu_can_io before jumping to the next block,
Pavel Dovgalyuk <=