<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [BAT] igt@drv_selftest@live_guc - dmesg-warn - *ERROR* MMIO: GuC action 0x10 failed with error" href="https://bugs.freedesktop.org/show_bug.cgi?id=107258#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [BAT] igt@drv_selftest@live_guc - dmesg-warn - *ERROR* MMIO: GuC action 0x10 failed with error" href="https://bugs.freedesktop.org/show_bug.cgi?id=107258">bug 107258</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>The spam is a regression from commit 13295bd887d07a9d904401808f41a8d35946d8c2 Author: Michal Wajdeczko <<a href="mailto:michal.wajdeczko@intel.com">michal.wajdeczko@intel.com</a>> Date: Mon May 28 17:16:18 2018 +0000 drm/i915/guc: Don't read SOFT_SCRATCH(15) on MMIO error SOFT_SCRATCH(15) is used by GuC for sending MMIO GuC events to host and those events are now handled by intel_guc_to_host_event_handler_mmio(). We should not try to read it on MMIO action error as 1) we may be using different set of registers for GuC MMIO communication, and 2) GuC may use CTB mechanism for sending events to host. While here, upgrade error message to DRM_ERROR. Signed-off-by: Michal Wajdeczko <<a href="mailto:michal.wajdeczko@intel.com">michal.wajdeczko@intel.com</a>> Cc: Michel Thierry <<a href="mailto:michel.thierry@intel.com">michel.thierry@intel.com</a>> Cc: Joonas Lahtinen <<a href="mailto:joonas.lahtinen@linux.intel.com">joonas.lahtinen@linux.intel.com</a>> Cc: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Reviewed-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Link: <a href="https://patchwork.freedesktop.org/patch/msgid/20180528171618.10436-1-michal.wajdeczko@intel.com">https://patchwork.freedesktop.org/patch/msgid/20180528171618.10436-1-michal.wajdeczko@intel.com</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>