make SIG_IPI to tcg vcpu thread reliable
Store tcg loop exit request on a global variable, and transfer it to
per-CPUState exit_request after assignment of cpu_single_env.
This makes exit request signal from robust. Drop the timedlock hack.
Signed-off-by: Marcelo Tosatti <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
diff --git a/cpu-exec.c b/cpu-exec.c
index dc81e79..c776605 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -213,6 +213,8 @@
/* main execution loop */
+volatile sig_atomic_t exit_request;
+
int cpu_exec(CPUState *env1)
{
volatile host_reg_t saved_env_reg;
@@ -234,6 +236,11 @@
asm("");
env = env1;
+ if (exit_request) {
+ env->exit_request = 1;
+ exit_request = 0;
+ }
+
#if defined(TARGET_I386)
if (!kvm_enabled()) {
/* put eflags in CPU temporary format */
