Add flag HW_GCSR with msgint registers in function kvm_init_gcsr_flag().

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
---
 arch/loongarch/include/asm/loongarch.h | 2 +-
 arch/loongarch/kvm/main.c              | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/loongarch/include/asm/loongarch.h b/arch/loongarch/include/asm/loongarch.h
index 553c4dc7a156..9ca18af11d25 100644
--- a/arch/loongarch/include/asm/loongarch.h
+++ b/arch/loongarch/include/asm/loongarch.h
@@ -688,8 +688,8 @@
 #define LOONGARCH_CSR_ISR1		0xa1
 #define LOONGARCH_CSR_ISR2		0xa2
 #define LOONGARCH_CSR_ISR3		0xa3
-
 #define LOONGARCH_CSR_IRR		0xa4
+#define LOONGARCH_CSR_IPR		0xa5
 
 #define LOONGARCH_CSR_PRID		0xc0
 
diff --git a/arch/loongarch/kvm/main.c b/arch/loongarch/kvm/main.c
index 80ea63d465b8..3ecd7de110d7 100644
--- a/arch/loongarch/kvm/main.c
+++ b/arch/loongarch/kvm/main.c
@@ -192,6 +192,14 @@ static void kvm_init_gcsr_flag(void)
 	set_gcsr_sw_flag(LOONGARCH_CSR_PERFCNTR2);
 	set_gcsr_sw_flag(LOONGARCH_CSR_PERFCTRL3);
 	set_gcsr_sw_flag(LOONGARCH_CSR_PERFCNTR3);
+
+	if (cpu_has_msgint) {
+		set_gcsr_hw_flag(LOONGARCH_CSR_ISR0);
+		set_gcsr_hw_flag(LOONGARCH_CSR_ISR1);
+		set_gcsr_hw_flag(LOONGARCH_CSR_ISR2);
+		set_gcsr_hw_flag(LOONGARCH_CSR_ISR3);
+		set_gcsr_hw_flag(LOONGARCH_CSR_IPR);
+	}
 }
 
 static void kvm_update_vpid(struct kvm_vcpu *vcpu, int cpu)
-- 
2.39.3