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[Qemu-devel] [RFCPATCH19/20] cpu-exec: reset exit flag before calling cp
From: |
Pavel Dovgalyuk |
Subject: |
[Qemu-devel] [RFCPATCH19/20] cpu-exec: reset exit flag before calling cpu_exec_nocache |
Date: |
Tue, 31 Oct 2017 13:49:24 +0300 |
User-agent: |
StGit/0.17.1-dirty |
This patch resets icount_decr.u32.high before calling cpu_exec_nocache
when exception is pending. Exception is caused by the first instruction
in the block and it cannot be executed without resetting the flag.
Signed-off-by: Pavel Dovgalyuk <address@hidden>
---
accel/tcg/cpu-exec.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 35d0240..aaa9c2d 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -500,6 +500,7 @@ static inline bool cpu_handle_exception(CPUState *cpu, int
*ret)
} else if (replay_has_exception()
&& cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
/* try to cause an exception pending in the log */
+ atomic_set(&cpu->icount_decr.u16.high, 0);
cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
*ret = -1;
return true;
- [Qemu-devel] [RFCPATCH09/20] replay: save prior value of the host clock, (continued)
- [Qemu-devel] [RFCPATCH09/20] replay: save prior value of the host clock, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH10/20] icount: fixed saving/restoring of icount warp timers, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH11/20] target/arm/arm-powertctl: drop BQL assertions, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH12/20] cpus: push BQL lock to qemu_*_wait_io_event, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH13/20] cpus: only take BQL for sleeping threads, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH14/20] replay/replay.c: bump REPLAY_VERSION again, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH15/20] replay/replay-internal.c: track holding of replay_lock, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH16/20] replay: make locking visible outside replay code, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH17/20] replay: push replay_mutex_lock up the call tree, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH18/20] cpu-exec: don't overwrite exception_index, Pavel Dovgalyuk, 2017/10/31
- [Qemu-devel] [RFCPATCH19/20] cpu-exec: reset exit flag before calling cpu_exec_nocache,
Pavel Dovgalyuk <=
- [Qemu-devel] [RFCPATCH20/20] replay: don't destroy mutex at exit, Pavel Dovgalyuk, 2017/10/31