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From: Edward Tomasz =?utf-8?Q?Napiera=C5=82a?= <trasz@FreeBSD.org>
To: Steven Hartland <smh@FreeBSD.org>
Subject: Re: svn commit: r278034 - head/sys/dev/ahci
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On 0201T2000, Steven Hartland wrote:
> Author: smh
> Date: Sun Feb  1 20:00:08 2015
> New Revision: 278034
> URL: https://svnweb.freebsd.org/changeset/base/278034
> 
> Log:
>   Add a quirk to limit AHCI MSI vectors to one
>   
>   In 10.1-RELEASE the default number of MSI vectors used was changed from one
>   to as many vectors as the HW supports.
>   
>   This change resulted in an ahci timeouts regression when running on AMD
>   SB7x0/SB8x0/SB9x0 hardware, so its now limited to 1 MSI by default using
>   this new quirk.

Could it fix https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195349?