From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 103351] Machine check exception on Broadwell quad-core with
SpeedStep enabled
Date: Tue, 29 Sep 2015 16:49:15 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=103351
sac changed:
What |Removed |Added
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CC| |sdfjk40sdnmxyl@mailinator.c
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--- Comment #17 from sac ---
Where is Intel on this one? They have a huge QA department and noone tests a
new processor architecture for *nix? I replaced several 5675C (complete
marathon & minidump described on https://www.virtualbox.org/ticket/14641 ), the
whole line is affected and I feel a little uncomfortable that every program can
trigger MCEs on my machine.
So even if we find a workaround here for the Kernel, it would be interesting
what's the long-term solution. Do we have the next FDIV like bug that we see in
the news tomorrow or can Intel fix this with a Microcode update? I assume we
need a new stepping (doubt that the MB vendors can work around, too). However I
was not able to find any place where I can adress & report this to Intel as
well :(
How can we debug this? All workarounds mentioned don't work / were falsified
("processor.max_cstate=0 intel_idle.max_cstate=0 idle=poll", OC-Fixed-Mode from
Phoronix not available on all MBs).
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