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target/loongarch: Add vCPU property for paravirt ipi feature

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Property kvm-pv-ipi is added to paravirt ipi 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 2025-02-24 10:30:47 +08:00
parent 780a65bd95
commit 5b0502c564
3 changed files with 20 additions and 1 deletions
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1
target/loongarch/cpu.h
View File

@ -406,6 +406,7 @@ struct ArchCPU {
OnOffAuto pmu;
OnOffAuto lsx;
OnOffAuto lasx;
OnOffAuto kvm_pv_ipi;
/* 'compatible' string for this CPU for Linux device trees */
const char *dtb_compatible;

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

@ -1040,6 +1040,18 @@ static void loongarch_set_pmu(Object *obj, bool value, Error **errp)
cpu->pmu = value ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
}
static bool kvm_pv_ipi_get(Object *obj, Error **errp)
{
return LOONGARCH_CPU(obj)->kvm_pv_ipi != ON_OFF_AUTO_OFF;
}
static void kvm_pv_ipi_set(Object *obj, bool value, Error **errp)
{
LoongArchCPU *cpu = LOONGARCH_CPU(obj);
cpu->kvm_pv_ipi = value ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
}
void kvm_loongarch_cpu_post_init(LoongArchCPU *cpu)
{
cpu->lbt = ON_OFF_AUTO_AUTO;
@ -1053,6 +1065,12 @@ void kvm_loongarch_cpu_post_init(LoongArchCPU *cpu)
loongarch_set_pmu);
object_property_set_description(OBJECT(cpu), "pmu",
"Set off to disable performance monitor unit.");
cpu->kvm_pv_ipi = ON_OFF_AUTO_AUTO;
object_property_add_bool(OBJECT(cpu), "kvm-pv-ipi", kvm_pv_ipi_get,
kvm_pv_ipi_set);
object_property_set_description(OBJECT(cpu), "kvm-pv-ipi",
"Set off to disable KVM paravirt IPI.");
}
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", NULL
"lsx", "lasx", "lbt", "pmu", "kvm-pv-ipi", NULL
};
CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,