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hw/intc/loongarch_pch_msi: Inject MSI interrupt to kernel

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If kvm_irqchip_in_kernel() return true, MSI interrupt can be injected
with API kvm_irqchip_send_msi() to KVM.

Reviewed-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20250606063033.2557365-7-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
This commit is contained in:
Bibo Mao 2025-06-06 14:30:26 +08:00 • committed by Song Gao
parent f936caa315
commit 5b0e05b902
1 changed files with 10 additions and 0 deletions
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10
hw/intc/loongarch_pch_msi.c
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@ -13,6 +13,7 @@
#include "hw/pci/msi.h"
#include "hw/misc/unimp.h"
#include "migration/vmstate.h"
#include "system/kvm.h"
#include "trace.h"
static uint64_t loongarch_msi_mem_read(void *opaque, hwaddr addr, unsigned size)
@ -26,6 +27,15 @@ static void loongarch_msi_mem_write(void *opaque, hwaddr addr,
LoongArchPCHMSI *s = (LoongArchPCHMSI *)opaque;
int irq_num;
if (kvm_irqchip_in_kernel()) {
MSIMessage msg;
msg.address = addr;
msg.data = val;
kvm_irqchip_send_msi(kvm_state, msg);
return;
}
/*
* vector number is irq number from upper extioi intc
* need subtract irq base to get msi vector offset