From 9a36085b866002d8e469f46078f0db5201f44999 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Tue, 1 Feb 2011 22:15:55 +0100 Subject: kvm: Call qemu_kvm_eat_signals also under !CONFIG_IOTHREAD 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 Signed-off-by: Marcelo Tosatti --- cpus.c | 90 ++++++++++++++++++++++++++++++++++++++---------------------------- 1 file changed, 52 insertions(+), 38 deletions(-) diff --git a/cpus.c b/cpus.c index d9c9111f82..f2ec74ce78 100644 --- a/cpus.c +++ b/cpus.c @@ -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) { -- cgit v1.2.3