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make SIG_IPI to tcg vcpu thread reliable

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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 <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti
2010-05-04 09:45:20 -03:00
parent 273faf1b6d
commit 1a28cac316
3 changed files with 19 additions and 14 deletions
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7
cpu-exec.c
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@@ -213,6 +213,8 @@ static void cpu_handle_debug_exception(CPUState *env)
/* 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 @@ int cpu_exec(CPUState *env1)
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 */