(In reply to Benjamin Herrenschmidt from comment #6)
> They may or may not be related ... Alex, kexec i=
s how we boot these
> machines, there's a Linux kernel in flash that runs a Linux based boot=
loader.

Yeah, you guys should have noted that because that combination is known to =
not
work correctly.

The problem is that some parts of the hardware are explicitly designed in a=
 way
which only allows loading one firmware after an ASIC reset. So as long as k=
exec
doesn't makes a full PCIe level ASIC reset the second driver load is intend=
ed
to fail.

We have the same problem with virtualization and used to have a workaround =
in
KVM which triggers the ASIC reset with a PCIe config space write. Alex shou=
ld
know the details.

Only solution I can see is to either use the same workaround as the KVM guy=
s or
use the same firmware for both the loader and the final kernel.

What	Removed	Added
Resolution	---	NOTABUG
Status	NEW	RESOLVED