[Bug 103351] Machine check exception on Broadwell quad-core with SpeedStep enabled

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=103351

sac <sdfjk40sdnmxyl@mailinator.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sdfjk40sdnmxyl@mailinator.c
                   |                            |om

--- Comment #17 from sac <sdfjk40sdnmxyl@mailinator.com> ---
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).

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