----- Original Message ----- > From: "Radim Krčmář" <[email protected]> > To: "Paolo Bonzini" <[email protected]> > Cc: [email protected], "Peter Xu" <[email protected]>, "Igor Mammedov" > <[email protected]>, "Richard Henderson" > <[email protected]>, "Eduardo Habkost" <[email protected]>, "Michael S. > Tsirkin" <[email protected]> > Sent: Tuesday, September 27, 2016 4:01:39 PM > Subject: Re: [PATCH 5/5] intel_iommu: do not allow EIM without KVM support > > 2016-09-23 11:27+0200, Paolo Bonzini: > > Since the whole IOMMU feature is new and somewhat experimental, I think > > it's okay to just make EIM the default for >=2.8 machine types if KVM is > > on (using DEFINE_PROP_ON_OFF_AUTO; auto means true if KVM is on and > > Sounds good.
BTW this also means KVM+vIOMMU requires 4.8. Let's remember to document it in the release notes. > > false otherwise, and pc-2.7 would set eim=off). > > What about eim=on in pc-2.7, to avoid breaking migration? Yup, just a thinko. Paolo
