FAILED: patch "[PATCH] LoongArch: KVM: Move AVEC interrupt injection into switch" failed to apply to 6.18-stable tree

The patch below does not apply to the 6.18-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.18.y
git checkout FETCH_HEAD
git cherry-pick -x 6debfff78584f0adedf7355fe5263198a3fc6b19
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2026051207-pastor-observant-9ca2@gregkh' --subject-prefix 'PATCH 6.18.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 6debfff78584f0adedf7355fe5263198a3fc6b19 Mon Sep 17 00:00:00 2001
From: Bibo Mao <[email protected]>
Date: Mon, 4 May 2026 09:00:48 +0800
Subject: [PATCH] LoongArch: KVM: Move AVEC interrupt injection into switch
loop

When AVEC interrupt controller is emulated in user space, AVEC interrupt is injected by software like SIP0/SIP1/TI/IPI interrupts. Here also move the AVEC interrupt injection in switch loop.

index 32930959f7c2..53dac8ab8fb1 100644
@@ -33,13 +33,12 @@ static int kvm_irq_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
 	if (priority < EXCCODE_INT_NUM)
 		irq = priority_to_irq[priority];
 
-	if (kvm_guest_has_msgint(&vcpu->arch) && (priority == INT_AVEC)) {
-		dmsintc_inject_irq(vcpu);
-		set_gcsr_estat(irq);
-		return 1;
-	}
-
 	switch (priority) {
+	case INT_AVEC:
+		if (!kvm_guest_has_msgint(&vcpu->arch))
+			break;
+		dmsintc_inject_irq(vcpu);
+		fallthrough;
 	case INT_TI:
 	case INT_IPI:
 	case INT_SWI0:

@@ -66,12 +65,11 @@ static int kvm_irq_clear(struct kvm_vcpu *vcpu, unsigned int priority)
 	if (priority < EXCCODE_INT_NUM)
 		irq = priority_to_irq[priority];
 
-	if (kvm_guest_has_msgint(&vcpu->arch) && (priority == INT_AVEC)) {
-		clear_gcsr_estat(irq);
-		return 1;
-	}
-
 	switch (priority) {
+	case INT_AVEC:
+		if (!kvm_guest_has_msgint(&vcpu->arch))
+			break;
+		fallthrough;
 	case INT_TI:
 	case INT_IPI:
 	case INT_SWI0: