From 0a917e9d4b7070fafcbf7a8ec32d2aa444b4e757 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Wed, 11 Jun 2025 15:45:08 -0700 Subject: KVM: SVM: Delete IRTE link from previous vCPU before setting new IRTE Delete the previous per-vCPU IRTE link prior to modifying the IRTE. If forcing the IRTE back to remapped mode fails, the IRQ is already broken; keeping stale metadata won't change that, and the IOMMU should be sufficiently paranoid to sanitize the IRTE when the IRQ is freed and reallocated. This will allow hoisting the vCPU tracking to common x86, which in turn will allow most of the IRTE update code to be deduplicated. Tested-by: Sairaj Kodilkar Link: https://lore.kernel.org/r/20250611224604.313496-7-seanjc@google.com Signed-off-by: Sean Christopherson --- include/linux/kvm_irqfd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/kvm_irqfd.h b/include/linux/kvm_irqfd.h index 6510a48e62aa..361c07f4466d 100644 --- a/include/linux/kvm_irqfd.h +++ b/include/linux/kvm_irqfd.h @@ -60,6 +60,7 @@ struct kvm_kernel_irqfd { struct irq_bypass_consumer consumer; struct irq_bypass_producer *producer; + struct kvm_vcpu *irq_bypass_vcpu; struct list_head vcpu_list; void *irq_bypass_data; }; -- cgit