From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 105950] radeonsi: OpenCL not working correctly on a big endian machine Date: Mon, 09 Apr 2018 10:52:17 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1481146164==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id 1132A6E0E6 for ; Mon, 9 Apr 2018 10:52:18 +0000 (UTC) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1481146164== Content-Type: multipart/alternative; boundary="15232711370.4D695ec.27678" Content-Transfer-Encoding: 7bit --15232711370.4D695ec.27678 Date: Mon, 9 Apr 2018 10:52:17 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D105950 Bug ID: 105950 Summary: radeonsi: OpenCL not working correctly on a big endian machine Product: Mesa Version: 17.3 Hardware: PowerPC OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: bas@daedalean.ai QA Contact: dri-devel@lists.freedesktop.org Running any OpenCL program on a big endian machine using a radeonsi card fa= ils. - union si_vgt_param_key uses a bitfield shared with a 32 bit value. This causes the index to be wrong on a big endian machine, and crashes any OpenCL program with a segfault. - si_setup_user_sgprs_co_v2 in si_compute.c fills a dispatch_packet struct = with values which are uploaded to the GPU. To ensure this works correctly, these values need to be converted to little endian. I'll send patches to the mesa-dev list for both these issues. Bas Vermeulen --=20 You are receiving this mail because: You are the assignee for the bug.= --15232711370.4D695ec.27678 Date: Mon, 9 Apr 2018 10:52:17 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated
Bug ID 105950
Summary radeonsi: OpenCL not working correctly on a big endian machine
Product Mesa
Version 17.3
Hardware PowerPC
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component Drivers/Gallium/radeonsi
Assignee dri-devel@lists.freedesktop.org
Reporter bas@daedalean.ai
QA Contact dri-devel@lists.freedesktop.org 

Running any OpenCL program on a big endian machine using a rad=
eonsi card fails.

- union si_vgt_param_key uses a bitfield shared with a 32 bit value. This
causes the index to be wrong on a big endian machine, and crashes any OpenCL
program with a segfault.
- si_setup_user_sgprs_co_v2 in si_compute.c fills a dispatch_packet struct =
with
values which are uploaded to the GPU. To ensure this works correctly, these
values need to be converted to little endian.

I'll send patches to the mesa-dev list for both these issues.

Bas Vermeulen

You are receiving this mail because:
  • You are the assignee for the bug.
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