On Fri, Nov 11, 2022 at 01:48:26PM +0100, Paolo Bonzini wrote: > On 11/11/22 13:19, Peter Zijlstra wrote: > > On Fri, Nov 11, 2022 at 01:04:27PM +0100, Paolo Bonzini wrote: > > > On Intel you can optionally make it hold onto IRQs, but NMIs are always > > > eaten by the VMEXIT and have to be reinjected manually. > > > > That 'optionally' thing worries me -- as in, KVM is currently > > opting-out? > > Yes, because "If the “process posted interrupts” VM-execution control is 1, > the “acknowledge interrupt on exit” VM-exit control is 1" (SDM 26.2.1.1, > checks on VM-Execution Control Fields). Ipse dixit. Posted interrupts are > available and used on all processors since I think Ivy Bridge. (imagine the non-coc compliant reaction here) So instead of fixing it, they made it worse :-( And now FRED is arguably making it worse again, and people wonder why I hate virt...
