From owner-freebsd-drivers@freebsd.org  Wed Oct 24 19:47:13 2018
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Subject: Re: Has anything changed from 11.2 to 12.0 in PCI MSI/MSIX path?
To: Rajesh Kumar <rajfbsd@gmail.com>, freebsd-drivers@freebsd.org,
 freebsd-current@freebsd.org
References: <CAAO+ANOkcmE6Roj7RLPYaYmD4hJu3cdHrAvUfmxb+8EkiSu4iA@mail.gmail.com>
From: John Baldwin <jhb@FreeBSD.org>
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Date: Wed, 24 Oct 2018 12:47:11 -0700
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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