Re: [PATCH v1 2/2] hw/mem/cxl_type3: allocate more vectors for MSI-X

[Hyeonggon Yoo]

On Tue, Nov 28, 2023 at 2:53 AM Davidlohr Bueso <dave@stgolabs.net> wrote:
>
> On Mon, 27 Nov 2023, Hyeonggon Yoo wrote:
>
> >commit 43efb0bfad2b ("hw/cxl/mbox: Wire up interrupts for background
> >completion") enables notifying background command completion via MSI-X
> >interrupt (vector number 9).
> >
> >However, the commit uses vector number 9 but the maximum number of
> >entries is less thus resulting in error below. Fix it by passing
> >nentries = 10 when calling msix_init_exclusive_bar().
>
> Hmm yeah this was already set to 10 in Jonathan's tree, thanks for reporting.

Oh, yeah, it's based on the mainline tree. I should have checked Jonathan's.

hmm it's already 10 there but vector number 9 is already being used by PCIe DOE.
So I think it should change msix_num = 11 and use vector number 10 for
background command completion interrupt instead?

https://gitlab.com/jic23/qemu/-/commit/2823f19188664a6d48a965ea8170c9efa23cddab

Thanks!

--
Hyeonggon