From: Fei Li <fli@suse.com>
The callers of qemu_init_vcpu() already passed the **errp to handle
errors. In view of this, add a new Error parameter to qemu_init_vcpu()
and all qemu_X_start_vcpu() functions called by qemu_init_vcpu() to
propagate the error and let the further callers check it.
Besides, make qemu_init_vcpu() return a Boolean value to let its
callers know whether it succeeds.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fei Li <fli@suse.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
---
accel/tcg/user-exec-stub.c | 3 +-
cpus.c | 74 +++++++++++++++++++--------------
include/qom/cpu.h | 2 +-
target/alpha/cpu.c | 4 +-
target/arm/cpu.c | 4 +-
target/cris/cpu.c | 4 +-
target/hppa/cpu.c | 4 +-
target/i386/cpu.c | 4 +-
target/lm32/cpu.c | 4 +-
target/m68k/cpu.c | 4 +-
target/microblaze/cpu.c | 4 +-
target/mips/cpu.c | 4 +-
target/moxie/cpu.c | 4 +-
target/nios2/cpu.c | 4 +-
target/openrisc/cpu.c | 4 +-
target/ppc/translate_init.inc.c | 4 +-
target/riscv/cpu.c | 4 +-
target/s390x/cpu.c | 4 +-
target/sh4/cpu.c | 4 +-
target/sparc/cpu.c | 4 +-
target/tilegx/cpu.c | 4 +-
target/tricore/cpu.c | 4 +-
target/unicore32/cpu.c | 4 +-
target/xtensa/cpu.c | 4 +-
24 files changed, 108 insertions(+), 55 deletions(-)
diff --git a/accel/tcg/user-exec-stub.c b/accel/tcg/user-exec-stub.c
index a32b4496af..f8c38a375c 100644
--- a/accel/tcg/user-exec-stub.c
+++ b/accel/tcg/user-exec-stub.c
@@ -10,8 +10,9 @@ void cpu_resume(CPUState *cpu)
{
}
-void qemu_init_vcpu(CPUState *cpu)
+bool qemu_init_vcpu(CPUState *cpu, Error **errp)
{
+ return true;
}
/* User mode emulation does not support record/replay yet. */
diff --git a/cpus.c b/cpus.c
index 843a0f06a2..4ed7d62e58 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1931,7 +1931,7 @@ void cpu_remove_sync(CPUState *cpu)
/* For temporary buffers for forming a name */
#define VCPU_THREAD_NAME_SIZE 16
-static void qemu_tcg_init_vcpu(CPUState *cpu)
+static void qemu_tcg_init_vcpu(CPUState *cpu, Error **errp)
{
char thread_name[VCPU_THREAD_NAME_SIZE];
static QemuCond *single_tcg_halt_cond;
@@ -1961,17 +1961,20 @@ static void qemu_tcg_init_vcpu(CPUState *cpu)
snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/TCG",
cpu->cpu_index);
- /* TODO: let the callers handle the error instead of abort() here */
- qemu_thread_create(cpu->thread, thread_name, qemu_tcg_cpu_thread_fn,
- cpu, QEMU_THREAD_JOINABLE, &error_abort);
+ if (qemu_thread_create(cpu->thread, thread_name,
+ qemu_tcg_cpu_thread_fn, cpu,
+ QEMU_THREAD_JOINABLE, errp) < 0) {
+ return;
+ }
} else {
/* share a single thread for all cpus with TCG */
snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "ALL CPUs/TCG");
- /* TODO: let the callers handle the error instead of abort() here */
- qemu_thread_create(cpu->thread, thread_name,
- qemu_tcg_rr_cpu_thread_fn,
- cpu, QEMU_THREAD_JOINABLE, &error_abort);
+ if (qemu_thread_create(cpu->thread, thread_name,
+ qemu_tcg_rr_cpu_thread_fn, cpu,
+ QEMU_THREAD_JOINABLE, errp) < 0) {
+ return;
+ }
single_tcg_halt_cond = cpu->halt_cond;
single_tcg_cpu_thread = cpu->thread;
@@ -1989,7 +1992,7 @@ static void qemu_tcg_init_vcpu(CPUState *cpu)
}
}
-static void qemu_hax_start_vcpu(CPUState *cpu)
+static void qemu_hax_start_vcpu(CPUState *cpu, Error **errp)
{
char thread_name[VCPU_THREAD_NAME_SIZE];
@@ -1999,15 +2002,16 @@ static void qemu_hax_start_vcpu(CPUState *cpu)
snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HAX",
cpu->cpu_index);
- /* TODO: let the further caller handle the error instead of abort() here */
- qemu_thread_create(cpu->thread, thread_name, qemu_hax_cpu_thread_fn,
- cpu, QEMU_THREAD_JOINABLE, &error_abort);
+ if (qemu_thread_create(cpu->thread, thread_name, qemu_hax_cpu_thread_fn,
+ cpu, QEMU_THREAD_JOINABLE, errp) < 0) {
+ return;
+ }
#ifdef _WIN32
cpu->hThread = qemu_thread_get_handle(cpu->thread);
#endif
}
-static void qemu_kvm_start_vcpu(CPUState *cpu)
+static void qemu_kvm_start_vcpu(CPUState *cpu, Error **errp)
{
char thread_name[VCPU_THREAD_NAME_SIZE];
@@ -2016,12 +2020,11 @@ static void qemu_kvm_start_vcpu(CPUState *cpu)
qemu_cond_init(cpu->halt_cond);
snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/KVM",
cpu->cpu_index);
- /* TODO: let the further caller handle the error instead of abort() here */
qemu_thread_create(cpu->thread, thread_name, qemu_kvm_cpu_thread_fn,
- cpu, QEMU_THREAD_JOINABLE, &error_abort);
+ cpu, QEMU_THREAD_JOINABLE, errp);
}
-static void qemu_hvf_start_vcpu(CPUState *cpu)
+static void qemu_hvf_start_vcpu(CPUState *cpu, Error **errp)
{
char thread_name[VCPU_THREAD_NAME_SIZE];
@@ -2035,12 +2038,11 @@ static void qemu_hvf_start_vcpu(CPUState *cpu)
snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HVF",
cpu->cpu_index);
- /* TODO: let the further caller handle the error instead of abort() here */
qemu_thread_create(cpu->thread, thread_name, qemu_hvf_cpu_thread_fn,
- cpu, QEMU_THREAD_JOINABLE, &error_abort);
+ cpu, QEMU_THREAD_JOINABLE, errp);
}
-static void qemu_whpx_start_vcpu(CPUState *cpu)
+static void qemu_whpx_start_vcpu(CPUState *cpu, Error **errp)
{
char thread_name[VCPU_THREAD_NAME_SIZE];
@@ -2049,15 +2051,16 @@ static void qemu_whpx_start_vcpu(CPUState *cpu)
qemu_cond_init(cpu->halt_cond);
snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/WHPX",
cpu->cpu_index);
- /* TODO: let the further caller handle the error instead of abort() here */
- qemu_thread_create(cpu->thread, thread_name, qemu_whpx_cpu_thread_fn,
- cpu, QEMU_THREAD_JOINABLE, &error_abort);
+ if (qemu_thread_create(cpu->thread, thread_name, qemu_whpx_cpu_thread_fn,
+ cpu, QEMU_THREAD_JOINABLE, errp) < 0) {
+ return;
+ }
#ifdef _WIN32
cpu->hThread = qemu_thread_get_handle(cpu->thread);
#endif
}
-static void qemu_dummy_start_vcpu(CPUState *cpu)
+static void qemu_dummy_start_vcpu(CPUState *cpu, Error **errp)
{
char thread_name[VCPU_THREAD_NAME_SIZE];
@@ -2066,16 +2069,16 @@ static void qemu_dummy_start_vcpu(CPUState *cpu)
qemu_cond_init(cpu->halt_cond);
snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/DUMMY",
cpu->cpu_index);
- /* TODO: let the further caller handle the error instead of abort() here */
qemu_thread_create(cpu->thread, thread_name, qemu_dummy_cpu_thread_fn,
- cpu, QEMU_THREAD_JOINABLE, &error_abort);
+ cpu, QEMU_THREAD_JOINABLE, errp);
}
-void qemu_init_vcpu(CPUState *cpu)
+bool qemu_init_vcpu(CPUState *cpu, Error **errp)
{
cpu->nr_cores = smp_cores;
cpu->nr_threads = smp_threads;
cpu->stopped = true;
+ Error *local_err = NULL;
if (!cpu->as) {
/* If the target cpu hasn't set up any address spaces itself,
@@ -2086,22 +2089,29 @@ void qemu_init_vcpu(CPUState *cpu)
}
if (kvm_enabled()) {
- qemu_kvm_start_vcpu(cpu);
+ qemu_kvm_start_vcpu(cpu, &local_err);
} else if (hax_enabled()) {
- qemu_hax_start_vcpu(cpu);
+ qemu_hax_start_vcpu(cpu, &local_err);
} else if (hvf_enabled()) {
- qemu_hvf_start_vcpu(cpu);
+ qemu_hvf_start_vcpu(cpu, &local_err);
} else if (tcg_enabled()) {
- qemu_tcg_init_vcpu(cpu);
+ qemu_tcg_init_vcpu(cpu, &local_err);
} else if (whpx_enabled()) {
- qemu_whpx_start_vcpu(cpu);
+ qemu_whpx_start_vcpu(cpu, &local_err);
} else {
- qemu_dummy_start_vcpu(cpu);
+ qemu_dummy_start_vcpu(cpu, &local_err);
+ }
+
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return false;
}
while (!cpu->created) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
}
+
+ return true;
}
void cpu_stop_current(void)
diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index 4c2feb9c17..bbd90bfebc 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -1014,7 +1014,7 @@ void end_exclusive(void);
*
* Initializes a vCPU.
*/
-void qemu_init_vcpu(CPUState *cpu);
+bool qemu_init_vcpu(CPUState *cpu, Error **errp);
#define SSTEP_ENABLE 0x1 /* Enable simulated HW single stepping */
#define SSTEP_NOIRQ 0x2 /* Do not use IRQ while single stepping */
diff --git a/target/alpha/cpu.c b/target/alpha/cpu.c
index 1fd95d6c0f..7d24ee1f31 100644
--- a/target/alpha/cpu.c
+++ b/target/alpha/cpu.c
@@ -66,7 +66,9 @@ static void alpha_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
acc->parent_realize(dev, errp);
}
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index d6da3f4fed..22b66a6936 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -1139,7 +1139,9 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
}
#endif
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
cpu_reset(cs);
acc->parent_realize(dev, errp);
diff --git a/target/cris/cpu.c b/target/cris/cpu.c
index a23aba2688..ec92d69781 100644
--- a/target/cris/cpu.c
+++ b/target/cris/cpu.c
@@ -140,7 +140,9 @@ static void cris_cpu_realizefn(DeviceState *dev, Error **errp)
}
cpu_reset(cs);
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
ccc->parent_realize(dev, errp);
}
diff --git a/target/hppa/cpu.c b/target/hppa/cpu.c
index 00bf444620..08f600ced9 100644
--- a/target/hppa/cpu.c
+++ b/target/hppa/cpu.c
@@ -98,7 +98,9 @@ static void hppa_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
acc->parent_realize(dev, errp);
#ifndef CONFIG_USER_ONLY
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 7483daef58..b5c5bc370a 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5324,7 +5324,9 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
}
#endif
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
/*
* Most Intel and certain AMD CPUs support hyperthreading. Even though QEMU
diff --git a/target/lm32/cpu.c b/target/lm32/cpu.c
index b7499cb627..d50b1e4a43 100644
--- a/target/lm32/cpu.c
+++ b/target/lm32/cpu.c
@@ -139,7 +139,9 @@ static void lm32_cpu_realizefn(DeviceState *dev, Error **errp)
cpu_reset(cs);
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
lcc->parent_realize(dev, errp);
}
diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c
index 582e3a73b3..4ab53f2d58 100644
--- a/target/m68k/cpu.c
+++ b/target/m68k/cpu.c
@@ -231,7 +231,9 @@ static void m68k_cpu_realizefn(DeviceState *dev, Error **errp)
m68k_cpu_init_gdb(cpu);
cpu_reset(cs);
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
mcc->parent_realize(dev, errp);
}
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
index 5596cd5485..310e3d8fd5 100644
--- a/target/microblaze/cpu.c
+++ b/target/microblaze/cpu.c
@@ -161,7 +161,9 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
env->pvr.regs[0] = PVR0_USE_EXC_MASK \
| PVR0_USE_ICACHE_MASK \
diff --git a/target/mips/cpu.c b/target/mips/cpu.c
index e217fb3e36..1e5aa69c57 100644
--- a/target/mips/cpu.c
+++ b/target/mips/cpu.c
@@ -145,7 +145,9 @@ static void mips_cpu_realizefn(DeviceState *dev, Error **errp)
cpu_mips_realize_env(&cpu->env);
cpu_reset(cs);
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
mcc->parent_realize(dev, errp);
}
diff --git a/target/moxie/cpu.c b/target/moxie/cpu.c
index 8d67eb6727..8581a6d922 100644
--- a/target/moxie/cpu.c
+++ b/target/moxie/cpu.c
@@ -66,7 +66,9 @@ static void moxie_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
cpu_reset(cs);
mcc->parent_realize(dev, errp);
diff --git a/target/nios2/cpu.c b/target/nios2/cpu.c
index fbfaa2ce26..5c7b4b486e 100644
--- a/target/nios2/cpu.c
+++ b/target/nios2/cpu.c
@@ -94,7 +94,9 @@ static void nios2_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
cpu_reset(cs);
ncc->parent_realize(dev, errp);
diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c
index 541b2a66c7..f8ec7deb38 100644
--- a/target/openrisc/cpu.c
+++ b/target/openrisc/cpu.c
@@ -83,7 +83,9 @@ static void openrisc_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
cpu_reset(cs);
occ->parent_realize(dev, errp);
diff --git a/target/ppc/translate_init.inc.c b/target/ppc/translate_init.inc.c
index 59e0b86762..cfd7777479 100644
--- a/target/ppc/translate_init.inc.c
+++ b/target/ppc/translate_init.inc.c
@@ -9705,7 +9705,9 @@ static void ppc_cpu_realize(DeviceState *dev, Error **errp)
32, "power-vsx.xml", 0);
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ goto unrealize;
+ }
pcc->parent_realize(dev, errp);
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 28d7e5302f..a4cd7428dd 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -311,7 +311,9 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
return;
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
cpu_reset(cs);
mcc->parent_realize(dev, errp);
diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 18ba7f85a5..2a3eac9761 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -222,7 +222,9 @@ static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
#endif
s390_cpu_gdb_init(cs);
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
/*
* KVM requires the initial CPU reset ioctl to be executed on the target
diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c
index b9f393b7c7..d32ef2e1cb 100644
--- a/target/sh4/cpu.c
+++ b/target/sh4/cpu.c
@@ -196,7 +196,9 @@ static void superh_cpu_realizefn(DeviceState *dev, Error **errp)
}
cpu_reset(cs);
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
scc->parent_realize(dev, errp);
}
diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c
index 4a4445bdf5..a511c90dab 100644
--- a/target/sparc/cpu.c
+++ b/target/sparc/cpu.c
@@ -772,7 +772,9 @@ static void sparc_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
scc->parent_realize(dev, errp);
}
diff --git a/target/tilegx/cpu.c b/target/tilegx/cpu.c
index bfe9be59b5..234148fabd 100644
--- a/target/tilegx/cpu.c
+++ b/target/tilegx/cpu.c
@@ -92,7 +92,9 @@ static void tilegx_cpu_realizefn(DeviceState *dev, Error **errp)
}
cpu_reset(cs);
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
tcc->parent_realize(dev, errp);
}
diff --git a/target/tricore/cpu.c b/target/tricore/cpu.c
index e8d37e4040..67e3eb03d9 100644
--- a/target/tricore/cpu.c
+++ b/target/tricore/cpu.c
@@ -96,7 +96,9 @@ static void tricore_cpu_realizefn(DeviceState *dev, Error **errp)
set_feature(env, TRICORE_FEATURE_13);
}
cpu_reset(cs);
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
tcc->parent_realize(dev, errp);
}
diff --git a/target/unicore32/cpu.c b/target/unicore32/cpu.c
index 2b49d1ca40..0c737c3187 100644
--- a/target/unicore32/cpu.c
+++ b/target/unicore32/cpu.c
@@ -96,7 +96,9 @@ static void uc32_cpu_realizefn(DeviceState *dev, Error **errp)
return;
}
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
ucc->parent_realize(dev, errp);
}
diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c
index a54dbe4260..d2351c9b20 100644
--- a/target/xtensa/cpu.c
+++ b/target/xtensa/cpu.c
@@ -131,7 +131,9 @@ static void xtensa_cpu_realizefn(DeviceState *dev, Error **errp)
cs->gdb_num_regs = xcc->config->gdb_regmap.num_regs;
- qemu_init_vcpu(cs);
+ if (!qemu_init_vcpu(cs, errp)) {
+ return;
+ }
xcc->parent_realize(dev, errp);
}
--
2.17.2 (Apple Git-113)
Fei Li <lifei1214@126.com> writes:
> From: Fei Li <fli@suse.com>
>
> The callers of qemu_init_vcpu() already passed the **errp to handle
> errors. In view of this, add a new Error parameter to qemu_init_vcpu()
> and all qemu_X_start_vcpu() functions called by qemu_init_vcpu() to
> propagate the error and let the further callers check it.
>
> Besides, make qemu_init_vcpu() return a Boolean value to let its
> callers know whether it succeeds.
>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Fei Li <fli@suse.com>
> Reviewed-by: Fam Zheng <famz@redhat.com>
> Reviewed-by: Juan Quintela <quintela@redhat.com>
> ---
> accel/tcg/user-exec-stub.c | 3 +-
> cpus.c | 74 +++++++++++++++++++--------------
> include/qom/cpu.h | 2 +-
> target/alpha/cpu.c | 4 +-
> target/arm/cpu.c | 4 +-
> target/cris/cpu.c | 4 +-
> target/hppa/cpu.c | 4 +-
> target/i386/cpu.c | 4 +-
> target/lm32/cpu.c | 4 +-
> target/m68k/cpu.c | 4 +-
> target/microblaze/cpu.c | 4 +-
> target/mips/cpu.c | 4 +-
> target/moxie/cpu.c | 4 +-
> target/nios2/cpu.c | 4 +-
> target/openrisc/cpu.c | 4 +-
> target/ppc/translate_init.inc.c | 4 +-
> target/riscv/cpu.c | 4 +-
> target/s390x/cpu.c | 4 +-
> target/sh4/cpu.c | 4 +-
> target/sparc/cpu.c | 4 +-
> target/tilegx/cpu.c | 4 +-
> target/tricore/cpu.c | 4 +-
> target/unicore32/cpu.c | 4 +-
> target/xtensa/cpu.c | 4 +-
> 24 files changed, 108 insertions(+), 55 deletions(-)
>
> diff --git a/accel/tcg/user-exec-stub.c b/accel/tcg/user-exec-stub.c
> index a32b4496af..f8c38a375c 100644
> --- a/accel/tcg/user-exec-stub.c
> +++ b/accel/tcg/user-exec-stub.c
> @@ -10,8 +10,9 @@ void cpu_resume(CPUState *cpu)
> {
> }
>
> -void qemu_init_vcpu(CPUState *cpu)
> +bool qemu_init_vcpu(CPUState *cpu, Error **errp)
> {
> + return true;
> }
>
> /* User mode emulation does not support record/replay yet. */
> diff --git a/cpus.c b/cpus.c
> index 843a0f06a2..4ed7d62e58 100644
> --- a/cpus.c
> +++ b/cpus.c
> @@ -1931,7 +1931,7 @@ void cpu_remove_sync(CPUState *cpu)
> /* For temporary buffers for forming a name */
> #define VCPU_THREAD_NAME_SIZE 16
>
> -static void qemu_tcg_init_vcpu(CPUState *cpu)
> +static void qemu_tcg_init_vcpu(CPUState *cpu, Error **errp)
> {
> char thread_name[VCPU_THREAD_NAME_SIZE];
> static QemuCond *single_tcg_halt_cond;
> @@ -1961,17 +1961,20 @@ static void qemu_tcg_init_vcpu(CPUState *cpu)
> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/TCG",
> cpu->cpu_index);
>
> - /* TODO: let the callers handle the error instead of abort() here */
> - qemu_thread_create(cpu->thread, thread_name, qemu_tcg_cpu_thread_fn,
> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
> + if (qemu_thread_create(cpu->thread, thread_name,
> + qemu_tcg_cpu_thread_fn, cpu,
> + QEMU_THREAD_JOINABLE, errp) < 0) {
> + return;
> + }
>
> } else {
> /* share a single thread for all cpus with TCG */
> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "ALL CPUs/TCG");
> - /* TODO: let the callers handle the error instead of abort() here */
> - qemu_thread_create(cpu->thread, thread_name,
> - qemu_tcg_rr_cpu_thread_fn,
> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
> + if (qemu_thread_create(cpu->thread, thread_name,
> + qemu_tcg_rr_cpu_thread_fn, cpu,
> + QEMU_THREAD_JOINABLE, errp) < 0) {
> + return;
> + }
>
> single_tcg_halt_cond = cpu->halt_cond;
> single_tcg_cpu_thread = cpu->thread;
> @@ -1989,7 +1992,7 @@ static void qemu_tcg_init_vcpu(CPUState *cpu)
> }
> }
>
> -static void qemu_hax_start_vcpu(CPUState *cpu)
> +static void qemu_hax_start_vcpu(CPUState *cpu, Error **errp)
> {
> char thread_name[VCPU_THREAD_NAME_SIZE];
>
> @@ -1999,15 +2002,16 @@ static void qemu_hax_start_vcpu(CPUState *cpu)
>
> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HAX",
> cpu->cpu_index);
> - /* TODO: let the further caller handle the error instead of abort() here */
> - qemu_thread_create(cpu->thread, thread_name, qemu_hax_cpu_thread_fn,
> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
> + if (qemu_thread_create(cpu->thread, thread_name, qemu_hax_cpu_thread_fn,
> + cpu, QEMU_THREAD_JOINABLE, errp) < 0) {
> + return;
> + }
> #ifdef _WIN32
> cpu->hThread = qemu_thread_get_handle(cpu->thread);
> #endif
> }
>
> -static void qemu_kvm_start_vcpu(CPUState *cpu)
> +static void qemu_kvm_start_vcpu(CPUState *cpu, Error **errp)
> {
> char thread_name[VCPU_THREAD_NAME_SIZE];
>
> @@ -2016,12 +2020,11 @@ static void qemu_kvm_start_vcpu(CPUState *cpu)
> qemu_cond_init(cpu->halt_cond);
> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/KVM",
> cpu->cpu_index);
> - /* TODO: let the further caller handle the error instead of abort() here */
> qemu_thread_create(cpu->thread, thread_name, qemu_kvm_cpu_thread_fn,
> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
> + cpu, QEMU_THREAD_JOINABLE, errp);
> }
>
> -static void qemu_hvf_start_vcpu(CPUState *cpu)
> +static void qemu_hvf_start_vcpu(CPUState *cpu, Error **errp)
> {
> char thread_name[VCPU_THREAD_NAME_SIZE];
>
> @@ -2035,12 +2038,11 @@ static void qemu_hvf_start_vcpu(CPUState *cpu)
>
> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HVF",
> cpu->cpu_index);
> - /* TODO: let the further caller handle the error instead of abort() here */
> qemu_thread_create(cpu->thread, thread_name, qemu_hvf_cpu_thread_fn,
> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
> + cpu, QEMU_THREAD_JOINABLE, errp);
> }
>
> -static void qemu_whpx_start_vcpu(CPUState *cpu)
> +static void qemu_whpx_start_vcpu(CPUState *cpu, Error **errp)
> {
> char thread_name[VCPU_THREAD_NAME_SIZE];
>
> @@ -2049,15 +2051,16 @@ static void qemu_whpx_start_vcpu(CPUState *cpu)
> qemu_cond_init(cpu->halt_cond);
> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/WHPX",
> cpu->cpu_index);
> - /* TODO: let the further caller handle the error instead of abort() here */
> - qemu_thread_create(cpu->thread, thread_name, qemu_whpx_cpu_thread_fn,
> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
> + if (qemu_thread_create(cpu->thread, thread_name, qemu_whpx_cpu_thread_fn,
> + cpu, QEMU_THREAD_JOINABLE, errp) < 0) {
> + return;
> + }
> #ifdef _WIN32
> cpu->hThread = qemu_thread_get_handle(cpu->thread);
> #endif
> }
>
> -static void qemu_dummy_start_vcpu(CPUState *cpu)
> +static void qemu_dummy_start_vcpu(CPUState *cpu, Error **errp)
> {
> char thread_name[VCPU_THREAD_NAME_SIZE];
>
> @@ -2066,16 +2069,16 @@ static void qemu_dummy_start_vcpu(CPUState *cpu)
> qemu_cond_init(cpu->halt_cond);
> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/DUMMY",
> cpu->cpu_index);
> - /* TODO: let the further caller handle the error instead of abort() here */
> qemu_thread_create(cpu->thread, thread_name, qemu_dummy_cpu_thread_fn,
> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
> + cpu, QEMU_THREAD_JOINABLE, errp);
> }
>
> -void qemu_init_vcpu(CPUState *cpu)
> +bool qemu_init_vcpu(CPUState *cpu, Error **errp)
> {
> cpu->nr_cores = smp_cores;
> cpu->nr_threads = smp_threads;
> cpu->stopped = true;
> + Error *local_err = NULL;
>
> if (!cpu->as) {
> /* If the target cpu hasn't set up any address spaces itself,
> @@ -2086,22 +2089,29 @@ void qemu_init_vcpu(CPUState *cpu)
> }
>
> if (kvm_enabled()) {
> - qemu_kvm_start_vcpu(cpu);
> + qemu_kvm_start_vcpu(cpu, &local_err);
> } else if (hax_enabled()) {
> - qemu_hax_start_vcpu(cpu);
> + qemu_hax_start_vcpu(cpu, &local_err);
> } else if (hvf_enabled()) {
> - qemu_hvf_start_vcpu(cpu);
> + qemu_hvf_start_vcpu(cpu, &local_err);
> } else if (tcg_enabled()) {
> - qemu_tcg_init_vcpu(cpu);
> + qemu_tcg_init_vcpu(cpu, &local_err);
> } else if (whpx_enabled()) {
> - qemu_whpx_start_vcpu(cpu);
> + qemu_whpx_start_vcpu(cpu, &local_err);
> } else {
> - qemu_dummy_start_vcpu(cpu);
> + qemu_dummy_start_vcpu(cpu, &local_err);
> + }
> +
> + if (local_err) {
> + error_propagate(errp, local_err);
> + return false;
> }
>
> while (!cpu->created) {
> qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
> }
> +
> + return true;
> }
>
> void cpu_stop_current(void)
If the qemu_FOO_init_vcpu() returned success / failure like their callee
qemu_thread_create() and their caller qemu_init_vcpu() do, then this
code would be simpler.
But it's not wrong, and we're at v11, so
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[...]
> 在 2019年2月1日，20:33，Markus Armbruster <armbru@redhat.com> 写道：
>
> Fei Li <lifei1214@126.com> writes:
>
>> From: Fei Li <fli@suse.com>
>>
>> The callers of qemu_init_vcpu() already passed the **errp to handle
>> errors. In view of this, add a new Error parameter to qemu_init_vcpu()
>> and all qemu_X_start_vcpu() functions called by qemu_init_vcpu() to
>> propagate the error and let the further callers check it.
>>
>> Besides, make qemu_init_vcpu() return a Boolean value to let its
>> callers know whether it succeeds.
>>
>> Cc: Paolo Bonzini <pbonzini@redhat.com>
>> Signed-off-by: Fei Li <fli@suse.com>
>> Reviewed-by: Fam Zheng <famz@redhat.com>
>> Reviewed-by: Juan Quintela <quintela@redhat.com>
>> ---
>> accel/tcg/user-exec-stub.c | 3 +-
>> cpus.c | 74 +++++++++++++++++++--------------
>> include/qom/cpu.h | 2 +-
>> target/alpha/cpu.c | 4 +-
>> target/arm/cpu.c | 4 +-
>> target/cris/cpu.c | 4 +-
>> target/hppa/cpu.c | 4 +-
>> target/i386/cpu.c | 4 +-
>> target/lm32/cpu.c | 4 +-
>> target/m68k/cpu.c | 4 +-
>> target/microblaze/cpu.c | 4 +-
>> target/mips/cpu.c | 4 +-
>> target/moxie/cpu.c | 4 +-
>> target/nios2/cpu.c | 4 +-
>> target/openrisc/cpu.c | 4 +-
>> target/ppc/translate_init.inc.c | 4 +-
>> target/riscv/cpu.c | 4 +-
>> target/s390x/cpu.c | 4 +-
>> target/sh4/cpu.c | 4 +-
>> target/sparc/cpu.c | 4 +-
>> target/tilegx/cpu.c | 4 +-
>> target/tricore/cpu.c | 4 +-
>> target/unicore32/cpu.c | 4 +-
>> target/xtensa/cpu.c | 4 +-
>> 24 files changed, 108 insertions(+), 55 deletions(-)
>>
>> diff --git a/accel/tcg/user-exec-stub.c b/accel/tcg/user-exec-stub.c
>> index a32b4496af..f8c38a375c 100644
>> --- a/accel/tcg/user-exec-stub.c
>> +++ b/accel/tcg/user-exec-stub.c
>> @@ -10,8 +10,9 @@ void cpu_resume(CPUState *cpu)
>> {
>> }
>>
>> -void qemu_init_vcpu(CPUState *cpu)
>> +bool qemu_init_vcpu(CPUState *cpu, Error **errp)
>> {
>> + return true;
>> }
>>
>> /* User mode emulation does not support record/replay yet. */
>> diff --git a/cpus.c b/cpus.c
>> index 843a0f06a2..4ed7d62e58 100644
>> --- a/cpus.c
>> +++ b/cpus.c
>> @@ -1931,7 +1931,7 @@ void cpu_remove_sync(CPUState *cpu)
>> /* For temporary buffers for forming a name */
>> #define VCPU_THREAD_NAME_SIZE 16
>>
>> -static void qemu_tcg_init_vcpu(CPUState *cpu)
>> +static void qemu_tcg_init_vcpu(CPUState *cpu, Error **errp)
>> {
>> char thread_name[VCPU_THREAD_NAME_SIZE];
>> static QemuCond *single_tcg_halt_cond;
>> @@ -1961,17 +1961,20 @@ static void qemu_tcg_init_vcpu(CPUState *cpu)
>> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/TCG",
>> cpu->cpu_index);
>>
>> - /* TODO: let the callers handle the error instead of abort() here */
>> - qemu_thread_create(cpu->thread, thread_name, qemu_tcg_cpu_thread_fn,
>> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
>> + if (qemu_thread_create(cpu->thread, thread_name,
>> + qemu_tcg_cpu_thread_fn, cpu,
>> + QEMU_THREAD_JOINABLE, errp) < 0) {
>> + return;
>> + }
>>
>> } else {
>> /* share a single thread for all cpus with TCG */
>> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "ALL CPUs/TCG");
>> - /* TODO: let the callers handle the error instead of abort() here */
>> - qemu_thread_create(cpu->thread, thread_name,
>> - qemu_tcg_rr_cpu_thread_fn,
>> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
>> + if (qemu_thread_create(cpu->thread, thread_name,
>> + qemu_tcg_rr_cpu_thread_fn, cpu,
>> + QEMU_THREAD_JOINABLE, errp) < 0) {
>> + return;
>> + }
>>
>> single_tcg_halt_cond = cpu->halt_cond;
>> single_tcg_cpu_thread = cpu->thread;
>> @@ -1989,7 +1992,7 @@ static void qemu_tcg_init_vcpu(CPUState *cpu)
>> }
>> }
>>
>> -static void qemu_hax_start_vcpu(CPUState *cpu)
>> +static void qemu_hax_start_vcpu(CPUState *cpu, Error **errp)
>> {
>> char thread_name[VCPU_THREAD_NAME_SIZE];
>>
>> @@ -1999,15 +2002,16 @@ static void qemu_hax_start_vcpu(CPUState *cpu)
>>
>> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HAX",
>> cpu->cpu_index);
>> - /* TODO: let the further caller handle the error instead of abort() here */
>> - qemu_thread_create(cpu->thread, thread_name, qemu_hax_cpu_thread_fn,
>> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
>> + if (qemu_thread_create(cpu->thread, thread_name, qemu_hax_cpu_thread_fn,
>> + cpu, QEMU_THREAD_JOINABLE, errp) < 0) {
>> + return;
>> + }
>> #ifdef _WIN32
>> cpu->hThread = qemu_thread_get_handle(cpu->thread);
>> #endif
>> }
>>
>> -static void qemu_kvm_start_vcpu(CPUState *cpu)
>> +static void qemu_kvm_start_vcpu(CPUState *cpu, Error **errp)
>> {
>> char thread_name[VCPU_THREAD_NAME_SIZE];
>>
>> @@ -2016,12 +2020,11 @@ static void qemu_kvm_start_vcpu(CPUState *cpu)
>> qemu_cond_init(cpu->halt_cond);
>> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/KVM",
>> cpu->cpu_index);
>> - /* TODO: let the further caller handle the error instead of abort() here */
>> qemu_thread_create(cpu->thread, thread_name, qemu_kvm_cpu_thread_fn,
>> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
>> + cpu, QEMU_THREAD_JOINABLE, errp);
>> }
>>
>> -static void qemu_hvf_start_vcpu(CPUState *cpu)
>> +static void qemu_hvf_start_vcpu(CPUState *cpu, Error **errp)
>> {
>> char thread_name[VCPU_THREAD_NAME_SIZE];
>>
>> @@ -2035,12 +2038,11 @@ static void qemu_hvf_start_vcpu(CPUState *cpu)
>>
>> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HVF",
>> cpu->cpu_index);
>> - /* TODO: let the further caller handle the error instead of abort() here */
>> qemu_thread_create(cpu->thread, thread_name, qemu_hvf_cpu_thread_fn,
>> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
>> + cpu, QEMU_THREAD_JOINABLE, errp);
>> }
>>
>> -static void qemu_whpx_start_vcpu(CPUState *cpu)
>> +static void qemu_whpx_start_vcpu(CPUState *cpu, Error **errp)
>> {
>> char thread_name[VCPU_THREAD_NAME_SIZE];
>>
>> @@ -2049,15 +2051,16 @@ static void qemu_whpx_start_vcpu(CPUState *cpu)
>> qemu_cond_init(cpu->halt_cond);
>> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/WHPX",
>> cpu->cpu_index);
>> - /* TODO: let the further caller handle the error instead of abort() here */
>> - qemu_thread_create(cpu->thread, thread_name, qemu_whpx_cpu_thread_fn,
>> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
>> + if (qemu_thread_create(cpu->thread, thread_name, qemu_whpx_cpu_thread_fn,
>> + cpu, QEMU_THREAD_JOINABLE, errp) < 0) {
>> + return;
>> + }
>> #ifdef _WIN32
>> cpu->hThread = qemu_thread_get_handle(cpu->thread);
>> #endif
>> }
>>
>> -static void qemu_dummy_start_vcpu(CPUState *cpu)
>> +static void qemu_dummy_start_vcpu(CPUState *cpu, Error **errp)
>> {
>> char thread_name[VCPU_THREAD_NAME_SIZE];
>>
>> @@ -2066,16 +2069,16 @@ static void qemu_dummy_start_vcpu(CPUState *cpu)
>> qemu_cond_init(cpu->halt_cond);
>> snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/DUMMY",
>> cpu->cpu_index);
>> - /* TODO: let the further caller handle the error instead of abort() here */
>> qemu_thread_create(cpu->thread, thread_name, qemu_dummy_cpu_thread_fn,
>> - cpu, QEMU_THREAD_JOINABLE, &error_abort);
>> + cpu, QEMU_THREAD_JOINABLE, errp);
>> }
>>
>> -void qemu_init_vcpu(CPUState *cpu)
>> +bool qemu_init_vcpu(CPUState *cpu, Error **errp)
>> {
>> cpu->nr_cores = smp_cores;
>> cpu->nr_threads = smp_threads;
>> cpu->stopped = true;
>> + Error *local_err = NULL;
>>
>> if (!cpu->as) {
>> /* If the target cpu hasn't set up any address spaces itself,
>> @@ -2086,22 +2089,29 @@ void qemu_init_vcpu(CPUState *cpu)
>> }
>>
>> if (kvm_enabled()) {
>> - qemu_kvm_start_vcpu(cpu);
>> + qemu_kvm_start_vcpu(cpu, &local_err);
>> } else if (hax_enabled()) {
>> - qemu_hax_start_vcpu(cpu);
>> + qemu_hax_start_vcpu(cpu, &local_err);
>> } else if (hvf_enabled()) {
>> - qemu_hvf_start_vcpu(cpu);
>> + qemu_hvf_start_vcpu(cpu, &local_err);
>> } else if (tcg_enabled()) {
>> - qemu_tcg_init_vcpu(cpu);
>> + qemu_tcg_init_vcpu(cpu, &local_err);
>> } else if (whpx_enabled()) {
>> - qemu_whpx_start_vcpu(cpu);
>> + qemu_whpx_start_vcpu(cpu, &local_err);
>> } else {
>> - qemu_dummy_start_vcpu(cpu);
>> + qemu_dummy_start_vcpu(cpu, &local_err);
>> + }
>> +
>> + if (local_err) {
>> + error_propagate(errp, local_err);
>> + return false;
>> }
>>
>> while (!cpu->created) {
>> qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
>> }
>> +
>> + return true;
>> }
>>
>> void cpu_stop_current(void)
>
> If the qemu_FOO_init_vcpu() returned success / failure like their callee
> qemu_thread_create() and their caller qemu_init_vcpu() do, then this
> code would be simpler.
>
> But it's not wrong, and we're at v11, so
> Reviewed-by: Markus Armbruster <armbru@redhat.com>
>
> [...]
Ok, and thanks for the review.
Have a nice day
Fei
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