KVM: x86: WARN if IRQ bypass routing is updated without in-kernel local APIC

Yell if kvm_pi_update_irte() is reached without an in-kernel local APIC,
as kvm_arch_irqfd_allowed() should prevent attaching an irqfd and thus any
and all postable IRQs to an APIC-less VM.

Link: https://lore.kernel.org/r/20250611224604.313496-53-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson 2025-06-11 15:45:54 -07:00
commit 25ef059e8b