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

[John Baldwin]

On 10/25/18 10:24 AM, Rajesh Kumar wrote:
> 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? 

I'm working on the MFC.  The current patch I've tested an MFC of is the one to
unify sys/x86/include/intr_machdep.h as a precursor to MFC'ing this change.
 
> On Thu, Oct 25, 2018 at 1:17 AM John Baldwin <jhb at freebsd.org <mailto: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
> 


-- 
John Baldwin