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authorMarcelo Tosatti <mtosatti@redhat.com>2010-05-04 09:45:20 -0300
committerMarcelo Tosatti <mtosatti@redhat.com>2010-05-11 14:02:22 -0300
commit1a28cac3161f8a85ee0256776068eaed2da025e5 (patch)
treed2c07947229fefb3504c26fd13e5853d13c68a0e /cpu-exec.c
parent273faf1b6dbdedd0fe9fc519ec73380eced667c2 (diff)
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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 <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'cpu-exec.c')
-rw-r--r--cpu-exec.c7
1 files changed, 7 insertions, 0 deletions
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 @@ 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 */