On Thu, Mar 20, 2025, Jim Mattson wrote: > On Thu, Mar 20, 2025 at 7:31 AM Sean Christopherson <seanjc@xxxxxxxxxx> wrote: > > > > Add a module param to allow disabling device posted interrupts without > > having to sacrifice all of APICv/AVIC, and to also effectively enumerate > > to userspace whether or not KVM may be utilizing device posted IRQs. > > Disabling device posted interrupts is very desirable for testing, and can > > even be desirable for production environments, e.g. if the host kernel > > wants to interpose on device interrupts. > > Are you referring to CONFIG_X86_POSTED_MSI, or something else that > doesn't exist yet? Yeah, that, and/or out-of-tree hackery to do similar coalescing (or ratelimiting).
