qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[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;




reply via email to

[Prev in Thread] Current Thread [Next in Thread]