Re: Has anything changed from 11.2 to 12.0 in PCI MSI/MSIX path?

Hi John,

Thanks a lot. It helps. I backported the changes to 11.2 and tried booting
in my board with success without any need for the said tunables.

I see those changes are marked for MFC after 2 Weeks. But I don't see them
still in stable/11 branch.  So, will it be taken into stable/11 branch by
any chance? If not, can the backported changes be submitted for review to
take into stable/11 branch?

On Thu, Oct 25, 2018 at 1:17 AM John Baldwin <jhb_at_freebsd.org> wrote:

> On 10/24/18 3:40 AM, Rajesh Kumar wrote:
> > Hi,
> >
> > I have a amd64 based board. When I tried to boot 11.1 (or) 11.2 in that,
> I
> > needed the following tunables to be set from loader prompt to get it
> booted
> > (otherwise machine reboots continuously).
> >
> > hw.usb.xhci.msi=0
> > hw.usb.xhci.msix=0
> > hw.pci.enable_msi=0
> > hw.pci.enable_msix=0
> >
> > But, when I tried with 12.0 - ALPHA4, I could able to get it booted
> without
> > any tunables.  So, has anything changed significantly on PCI MSI/MSI-X
> > path?
> >
> > Note: I have a forum topic with my observations about the issue on
> > 11.1/11.2 in the following thread
> >
> https://forums.freebsd.org/threads/freebsd-11-1-installation-fails-and-rebooting.65814/
> >
> > Let me know if you need any details.
>
> I believe this was fixed by r338360.
>
> --
> John Baldwin
>