On Wed, Dec 01 2021 at 14:49, Dave Jiang wrote: > On 12/1/2021 2:44 PM, Thomas Gleixner wrote: >> How that is backed on the host does not really matter. You can expose >> MSI-X to the guest with a INTx backing as well. >> >> I'm still failing to see the connection between the 9 MSIX vectors and >> the 2048 IMS vectors which I assume that this is the limitation of the >> physical device, right? > > I think I was confused with what you were asking and was thinking you > are saying why can't we just have MSIX on guest backed by the MSIX on > the physical device and thought there would not be enough vectors to > service the many guests. I think I understand what your position is now > with the clarification above.
This still depends on how this overall discussion about representation of all of this stuff is resolved. >> What needs a subdevice to expose? Can you answer that too please? Thanks, tglx _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu