KVM: x86: Skip IOMMU IRTE updates if there's no old or new vCPU being targeted

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Don't "reconfigure" an IRTE into host controlled mode when it's already in
the state, i.e. if KVM's GSI routing changes but the IRQ wasn't and still
isn't being posted to a vCPU.

Link: https://lore.kernel.org/r/20250611224604.313496-37-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Sean Christopherson 2025-06-11 15:45:38 -07:00

parent 511754bc54

commit dc6adb1304

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arch/x86/kvm/irq.c

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