Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [patch 21/32] NTB/msi: Convert to msi_on_each_desc() | Date | Wed, 01 Dec 2021 23:03:02 +0100 |
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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
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