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target/loongarch: Enable virtual extioi feature

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Feature virtual extioi is loongArch virt machine property rather than
vCPU property in qemu side. However it is vCPU property in KVM kernel
side, here add loongArch virt machine property checking and enable virt
extioi feature when vCPU is created.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
This commit is contained in:
Bibo Mao 2025-02-17 09:56:13 +08:00
parent 954cc5c311
commit db369c11c9
3 changed files with 19 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

8
hw/loongarch/virt.c
View file

@ -45,14 +45,6 @@
#include "hw/virtio/virtio-iommu.h"
#include "qemu/error-report.h"
static bool virt_is_veiointc_enabled(LoongArchVirtMachineState *lvms)
{
if (lvms->veiointc == ON_OFF_AUTO_OFF) {
return false;
}
return true;
}
static void virt_get_veiointc(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{

9
include/hw/loongarch/virt.h
View file

@ -68,4 +68,13 @@ struct LoongArchVirtMachineState {
OBJECT_DECLARE_SIMPLE_TYPE(LoongArchVirtMachineState, LOONGARCH_VIRT_MACHINE)
void virt_acpi_setup(LoongArchVirtMachineState *lvms);
void virt_fdt_setup(LoongArchVirtMachineState *lvms);
static inline bool virt_is_veiointc_enabled(LoongArchVirtMachineState *lvms)
{
if (lvms->veiointc == ON_OFF_AUTO_OFF) {
return false;
}
return true;
}
#endif

10
target/loongarch/kvm/kvm.c
View file

@ -21,6 +21,7 @@
#include "exec/address-spaces.h"
#include "hw/boards.h"
#include "hw/irq.h"
#include "hw/loongarch/virt.h"
#include "qemu/log.h"
#include "hw/loader.h"
#include "system/runstate.h"
@ -1030,6 +1031,7 @@ static int kvm_cpu_check_pmu(CPUState *cs, Error **errp)
static int kvm_cpu_check_pv_features(CPUState *cs, Error **errp)
{
MachineState *ms = MACHINE(qdev_get_machine());
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = cpu_env(cs);
bool kvm_supported;
@ -1062,6 +1064,14 @@ static int kvm_cpu_check_pv_features(CPUState *cs, Error **errp)
env->pv_features |= BIT(KVM_FEATURE_STEAL_TIME);
}
if (object_dynamic_cast(OBJECT(ms), TYPE_LOONGARCH_VIRT_MACHINE)) {
LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(ms);
if (virt_is_veiointc_enabled(lvms)) {
env->pv_features |= BIT(KVM_FEATURE_VIRT_EXTIOI);
}
}
return 0;
}