From: Oliver Upton <oliver.upton@linux.dev>
Date: Tue, 8 Jul 2025 17:25:09 +0000 (-0700)
Subject: KVM: arm64: Treat vCPU with pending SError as runnable
X-Git-Tag: io_uring-6.17-20250815~113^2~3^2~7^2~29
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=aae35f4ffbf20a09c5a5188ef5ddb3a4b5038df0;p=linux-block.git

KVM: arm64: Treat vCPU with pending SError as runnable

Per R_VRLPB, a pending SError is a WFI wakeup event regardless of
PSTATE.A, meaning that the vCPU is runnable. Sample VSE in addition to
the other IRQ lines.

Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250708172532.1699409-5-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 659446378fca..bbe7b98e1ce3 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -740,7 +740,8 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
  */
 int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
 {
-	bool irq_lines = *vcpu_hcr(v) & (HCR_VI | HCR_VF);
+	bool irq_lines = *vcpu_hcr(v) & (HCR_VI | HCR_VF | HCR_VSE);
+
 	return ((irq_lines || kvm_vgic_vcpu_pending_irq(v))
 		&& !kvm_arm_vcpu_stopped(v) && !v->arch.pause);
 }