<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [amdgpu SI] amdgpu on SI devices is much slower then radeon" href="https://bugs.freedesktop.org/show_bug.cgi?id=97882#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [amdgpu SI] amdgpu on SI devices is much slower then radeon" href="https://bugs.freedesktop.org/show_bug.cgi?id=97882">bug 97882</a> from <a class="email" href="mailto:trevor.davenport@gmail.com" title="Trevor Davenport <trevor.davenport@gmail.com>"> Trevor Davenport</a> <pre>This is fixed by the following commit: author Jean Delvare <<a href="mailto:jdelvare@suse.de">jdelvare@suse.de</a>> 2017-07-30 08:18:25 (GMT) committer Alex Deucher <<a href="mailto:alexander.deucher@amd.com">alexander.deucher@amd.com</a>> 2017-07-31 20:30:42 (GMT) commit e5c8d400da67abc1c033b9a4af1806926b55e5f6 (patch) tree cf3dac459890ed900416d4087ae0603d4aa42b6f parent 29805b5f60d88c56ae7e91ae231f0ff8bf1983b8 (diff) drm/amdgpu: Fix undue fallthroughs in golden registers initialization As I was staring at the si_init_golden_registers code, I noticed that the Pitcairn initialization silently falls through the Cape Verde initialization, and the Oland initialization falls through the Hainan initialization. However there is no comment stating that this is intentional, and the radeon driver doesn't have any such fallthrough, so I suspect this is not supposed to happen. Commit can be seen here: <a href="https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-4.14-wip&id=e5c8d400da67abc1c033b9a4af1806926b55e5f6">https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-4.14-wip&id=e5c8d400da67abc1c033b9a4af1806926b55e5f6</a> With this fix I now get performance approximately equal to that of radeon.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>