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Date:      Tue, 03 Jan 2017 12:49:15 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 211713] NVME controller failure: resetting
Message-ID:  <bug-211713-8-VcQCYaNysk@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-211713-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-211713-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211713

--- Comment #9 from Robin Randhawa <robin.randhawa@arm.com> ---
(In reply to Terry Kennedy from Comment #8)

Hi Terry.

Thanks for the responses. I concur with your view that this is likely somet=
hing
to do with the suspend-resume pathway and missing context that isn't restor=
ed
correctly (or at all).

BTW I was incorrectly stating a ~5 second 'stall'. This is in fact closer to
~30 seconds. So after a resume from ACPI S3, there is a ~30 second freeze
before the abort messages and the system becoming usable again. Most
irritating.

I'm trying to grok the nvme driver source to see if there is some basic sus=
pend
resume callbacks that need fleshing out. I will update if I make any headwa=
y.

I also worry that there is some ACPI <-> NVMe overlaps that may be to blame.
This is a fairly new laptop and there are a whole lot of ACPI related messa=
ges
appearing in the kernel log buffer at suspend-resume time.

Cheers.

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