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accel: Introduce AccelOpsClass::cpus_are_resettable()

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Add cpus_are_resettable() to AccelOps, and implement it for the
KVM accelerator.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220207075426.81934-12-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2022-02-03 02:03:57 +01:00
parent ad7d684dfd
commit 3919635582
4 changed files with 12 additions and 6 deletions
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6
accel/kvm/kvm-accel-ops.c
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@ -79,12 +79,18 @@ static bool kvm_vcpu_thread_is_idle(CPUState *cpu)
return !kvm_halt_in_kernel();
}
static bool kvm_cpus_are_resettable(void)
{
return !kvm_enabled() || kvm_cpu_check_are_resettable();
}
static void kvm_accel_ops_class_init(ObjectClass *oc, void *data)
{
AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
ops->create_vcpu_thread = kvm_start_vcpu_thread;
ops->cpu_thread_is_idle = kvm_vcpu_thread_is_idle;
ops->cpus_are_resettable = kvm_cpus_are_resettable;
ops->synchronize_post_reset = kvm_cpu_synchronize_post_reset;
ops->synchronize_post_init = kvm_cpu_synchronize_post_init;
ops->synchronize_state = kvm_cpu_synchronize_state;

2
include/sysemu/accel-ops.h
View File

@ -28,6 +28,8 @@ struct AccelOpsClass {
/* initialization function called when accel is chosen */
void (*ops_init)(AccelOpsClass *ops);
bool (*cpus_are_resettable)(void);
void (*create_vcpu_thread)(CPUState *cpu); /* MANDATORY NON-NULL */
void (*kick_vcpu_thread)(CPUState *cpu);
bool (*cpu_thread_is_idle)(CPUState *cpu);

5
include/sysemu/hw_accel.h
View File

@ -23,9 +23,4 @@ void cpu_synchronize_post_reset(CPUState *cpu);
void cpu_synchronize_post_init(CPUState *cpu);
void cpu_synchronize_pre_loadvm(CPUState *cpu);
static inline bool cpu_check_are_resettable(void)
{
return kvm_enabled() ? kvm_cpu_check_are_resettable() : true;
}
#endif /* QEMU_HW_ACCEL_H */

5
softmmu/cpus.c
View File

@ -195,7 +195,10 @@ void cpu_synchronize_pre_loadvm(CPUState *cpu)
bool cpus_are_resettable(void)
{
return cpu_check_are_resettable();
if (cpus_accel->cpus_are_resettable) {
return cpus_accel->cpus_are_resettable();
}
return true;
}
int64_t cpus_get_virtual_clock(void)