On Thu, Sep 05, 2019 at 02:58:18PM +0200, Alexander Graf wrote: > We can easily route hardware interrupts directly into VM context when > they target the "Fixed" or "LowPriority" delivery modes. > > However, on modes such as "SMI" or "Init", we need to go via KVM code > to actually put the vCPU into a different mode of operation, so we can > not post the interrupt > > Add code in the VMX and SVM PI logic to explicitly refuse to establish > posted mappings for advanced IRQ deliver modes. This reflects the logic > in __apic_accept_irq() which also only ever passes Fixed and LowPriority > interrupts as posted interrupts into the guest. > > This fixes a bug I have with code which configures real hardware to > inject virtual SMIs into my guest. > > Signed-off-by: Alexander Graf <graf@xxxxxxxxxx> > > --- Reviewed-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
