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hw/intc/loongarch_extioi: Add kernel irqchip save and restore function

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Add save and store funtction if kvm_irqchip_in_kernel() return true,
it is to get and set ExtIOI irqchip state from KVM kernel.

Reviewed-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20250606063033.2557365-3-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
This commit is contained in:
Bibo Mao 2025-06-06 14:30:22 +08:00 • committed by Song Gao
parent 8bf8814ab1
commit 228c5413fb
3 changed files with 106 additions and 0 deletions
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14
hw/intc/loongarch_extioi.c
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@ -393,11 +393,24 @@ static void loongarch_extioi_reset_hold(Object *obj, ResetType type)
}
}
static int vmstate_extioi_pre_save(void *opaque)
{
if (kvm_irqchip_in_kernel()) {
return kvm_extioi_get(opaque);
}
return 0;
}
static int vmstate_extioi_post_load(void *opaque, int version_id)
{
LoongArchExtIOICommonState *s = LOONGARCH_EXTIOI_COMMON(opaque);
int i, start_irq;
if (kvm_irqchip_in_kernel()) {
return kvm_extioi_put(opaque, version_id);
}
for (i = 0; i < (EXTIOI_IRQS / 4); i++) {
start_irq = i * 4;
extioi_update_sw_coremap(s, start_irq, s->coremap[i], false);
@ -423,6 +436,7 @@ static void loongarch_extioi_class_init(ObjectClass *klass, const void *data)
&lec->parent_unrealize);
resettable_class_set_parent_phases(rc, NULL, loongarch_extioi_reset_hold,
NULL, &lec->parent_phases);
lecc->pre_save = vmstate_extioi_pre_save;
lecc->post_load = vmstate_extioi_post_load;
}