Comment 0 for bug 1769843

Revision history for this message
Timo Aaltonen (tjaalton) wrote :

CNL-Y SDP machine hangs soon after the system has booted up, and needs this from drm-intel-next-queued to fix it:

commit 61bf9719fa170cd73b1937770d08cb062e070958
Author: Mika Kuoppala <email address hidden>
Date: Thu Apr 12 17:58:02 2018 +0300

    drm/i915/cnl: Use mmio access to context status buffer

    Evidence indicates that Cannonlake HWSP is not coherent
    as it should. Revert to using mmio access for now.

    Testcase: igt/gem_ctx_switch
    References: https://bugs.freedesktop.org/show_bug.cgi?id=105888
    Cc: Chris Wilson <email address hidden>
    Cc: Rafael Antognolli <email address hidden>
    Cc: Rodrigo Vivi <email address hidden>
    Signed-off-by: Mika Kuoppala <email address hidden>
    Acked-by: Chris Wilson <email address hidden>
    Link: https://patchwork.<email address hidden>