haraldwolff/qemu-patch-raspberry4
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kvm: Call qemu_kvm_eat_signals also under !CONFIG_IOTHREAD

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Move qemu_kvm_eat_signals around and call it also when the IO-thread is
not used. Do not yet process SIGBUS, will be armed in a separate step.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Jan Kiszka 2011-02-01 22:15:55 +01:00 committed by Marcelo Tosatti
parent 5db5bdacdf
commit 9a36085b86
1 changed files with 52 additions and 38 deletions
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90
cpus.c
View file

@ -227,6 +227,47 @@ static void dummy_signal(int sig)
{
}
static void sigbus_reraise(void);
static void qemu_kvm_eat_signals(CPUState *env)
{
struct timespec ts = { 0, 0 };
siginfo_t siginfo;
sigset_t waitset;
sigset_t chkset;
int r;
sigemptyset(&waitset);
sigaddset(&waitset, SIG_IPI);
sigaddset(&waitset, SIGBUS);
do {
r = sigtimedwait(&waitset, &siginfo, &ts);
if (r == -1 && !(errno == EAGAIN || errno == EINTR)) {
perror("sigtimedwait");
exit(1);
}
switch (r) {
#ifdef CONFIG_IOTHREAD
case SIGBUS:
if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
sigbus_reraise();
}
break;
#endif
default:
break;
}
r = sigpending(&chkset);
if (r == -1) {
perror("sigpending");
exit(1);
}
} while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
}
#else /* _WIN32 */
HANDLE qemu_event_handle;
@ -254,6 +295,10 @@ static void qemu_event_increment(void)
exit (1);
}
}
static void qemu_kvm_eat_signals(CPUState *env)
{
}
#endif /* _WIN32 */
#ifndef CONFIG_IOTHREAD
@ -644,43 +689,6 @@ static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo,
}
}
static void qemu_kvm_eat_signals(CPUState *env)
{
struct timespec ts = { 0, 0 };
siginfo_t siginfo;
sigset_t waitset;
sigset_t chkset;
int r;
sigemptyset(&waitset);
sigaddset(&waitset, SIG_IPI);
sigaddset(&waitset, SIGBUS);
do {
r = sigtimedwait(&waitset, &siginfo, &ts);
if (r == -1 && !(errno == EAGAIN || errno == EINTR)) {
perror("sigtimedwait");
exit(1);
}
switch (r) {
case SIGBUS:
if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
sigbus_reraise();
}
break;
default:
break;
}
r = sigpending(&chkset);
if (r == -1) {
perror("sigpending");
exit(1);
}
} while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
}
static void qemu_kvm_wait_io_event(CPUState *env)
{
while (!cpu_has_work(env))
@ -953,6 +961,8 @@ static int qemu_cpu_exec(CPUState *env)
bool cpu_exec_all(void)
{
int r;
if (next_cpu == NULL)
next_cpu = first_cpu;
for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) {
@ -964,7 +974,11 @@ bool cpu_exec_all(void)
if (qemu_alarm_pending())
break;
if (cpu_can_run(env)) {
if (qemu_cpu_exec(env) == EXCP_DEBUG) {
r = qemu_cpu_exec(env);
if (kvm_enabled()) {
qemu_kvm_eat_signals(env);
}
if (r == EXCP_DEBUG) {
break;
}
} else if (env->stop) {