From: Jean-Marc Valin <jmvalin@mozilla.com>
To: "Christian König" <christian.koenig@amd.com>,
"Gabriel C" <nix.or.die@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>,
alexander.deucher@amd.com, Felix.Kuehling@amd.com,
Laura Abbott <labbott@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
michel.daenzer@amd.com, dri-devel@lists.freedesktop.org,
LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: AMD graphics performance regression in 4.15 and later
Date: Wed, 11 Apr 2018 14:35:19 -0400 [thread overview]
Message-ID: <7bf2f711-bbd8-cee6-6377-0c4f22db2937@mozilla.com> (raw)
In-Reply-To: <dafca4cc-c7ca-a06d-3a17-46240b1d20c3@amd.com>
On 04/11/2018 05:37 AM, Christian König wrote:
>> With your patches my EPYC box is unusable with 4.15++ kernels.
>> The whole Desktop is acting weird. This one is using
>> an Cape Verde PRO [Radeon HD 7750/8740 / R7 250E] GPU.
>>
>> Box is 2 * EPYC 7281 with 128 GB ECC RAM
>>
>> Also a 14C Xeon box with a HD7700 is broken same way.
>
> The hardware is irrelevant for this. We need to know what software stack
> you use on top of it.
Well, the hardware appears to be part of the issue too. I don't think
it's a coincidence that Gabriel has the problem on 2xEPYC, I have it on
2xXeon and the previous reported had it on a Core 2 Quad that internally
has two dies.
I've not yet tested your disable CONFIG_SWIOTLB fix yet -- might try it
over the weekend and report what happens.
Cheers,
Jean-Marc
next prev parent reply other threads:[~2018-04-11 18:35 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-06 0:30 Jean-Marc Valin
2018-04-06 8:03 ` Christian König
2018-04-06 8:10 ` Christian König
2018-04-06 15:30 ` Jean-Marc Valin
2018-04-09 11:48 ` Christian König
2018-04-06 16:42 ` Jean-Marc Valin
2018-04-06 17:20 ` Christian König
2018-04-06 22:00 ` Jean-Marc Valin
2018-04-09 9:42 ` Christian König
2018-04-09 15:17 ` Jean-Marc Valin
2018-04-10 6:48 ` Christian König
2018-04-11 4:00 ` Gabriel C
2018-04-11 5:02 ` Gabriel C
2018-06-06 11:28 ` Gabriel C
2018-06-06 11:33 ` Christian König
2018-06-06 12:08 ` Gabriel C
2018-06-06 12:19 ` Christian König
2018-04-11 9:37 ` Christian König
2018-04-11 14:26 ` Gabriel C
2018-04-11 17:21 ` Gabriel C
2018-04-11 18:35 ` Jean-Marc Valin [this message]
2018-04-11 22:20 ` Gabriel C
2018-04-12 1:47 ` Gabriel C
2018-04-20 14:47 ` Michel Dänzer
2018-04-20 19:40 ` Felix Kuehling
2018-04-23 10:23 ` Michel Dänzer
2018-07-13 2:23 ` Jean-Marc Valin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7bf2f711-bbd8-cee6-6377-0c4f22db2937@mozilla.com \
--to=jmvalin@mozilla.com \
--cc=Felix.Kuehling@amd.com \
--cc=airlied@linux.ie \
--cc=akpm@linux-foundation.org \
--cc=alexander.deucher@amd.com \
--cc=christian.koenig@amd.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=labbott@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=michel.daenzer@amd.com \
--cc=nix.or.die@gmail.com \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome