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target/loongarch: Add vCPU property for kvm steal time feature

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Property kvm-steal-time is added for kvm steal time feature, it is
specially for kvm mode.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
This commit is contained in:
Bibo Mao 2025-02-15 17:01:21 +08:00
parent 2698cc7c99
commit 610babce1e
3 changed files with 20 additions and 1 deletions
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1
target/loongarch/cpu.h
View File

@ -409,6 +409,7 @@ struct ArchCPU {
OnOffAuto lsx;
OnOffAuto lasx;
OnOffAuto kvm_pv_ipi;
OnOffAuto kvm_steal_time;
/* 'compatible' string for this CPU for Linux device trees */
const char *dtb_compatible;

18
target/loongarch/kvm/kvm.c
View File

@ -1122,6 +1122,18 @@ static void kvm_pv_ipi_set(Object *obj, bool value, Error **errp)
cpu->kvm_pv_ipi = value ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
}
static bool kvm_steal_time_get(Object *obj, Error **errp)
{
return LOONGARCH_CPU(obj)->kvm_steal_time != ON_OFF_AUTO_OFF;
}
static void kvm_steal_time_set(Object *obj, bool value, Error **errp)
{
LoongArchCPU *cpu = LOONGARCH_CPU(obj);
cpu->kvm_steal_time = value ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
}
void kvm_loongarch_cpu_post_init(LoongArchCPU *cpu)
{
cpu->lbt = ON_OFF_AUTO_AUTO;
@ -1141,6 +1153,12 @@ void kvm_loongarch_cpu_post_init(LoongArchCPU *cpu)
kvm_pv_ipi_set);
object_property_set_description(OBJECT(cpu), "kvm-pv-ipi",
"Set off to disable KVM paravirt IPI.");
cpu->kvm_steal_time = ON_OFF_AUTO_AUTO;
object_property_add_bool(OBJECT(cpu), "kvm-steal-time", kvm_steal_time_get,
kvm_steal_time_set);
object_property_set_description(OBJECT(cpu), "kvm-steal-time",
"Set off to disable KVM steal time.");
}
int kvm_arch_destroy_vcpu(CPUState *cs)

2
target/loongarch/loongarch-qmp-cmds.c
View File

@ -40,7 +40,7 @@ CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
}
static const char *cpu_model_advertised_features[] = {
"lsx", "lasx", "lbt", "pmu", "kvm-pv-ipi", NULL
"lsx", "lasx", "lbt", "pmu", "kvm-pv-ipi", "kvm-steal-time", NULL
};
CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,