[Bug 96805] [BAT] *ERROR* Failed to fetch GuC firmware

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96805

--- Comment #4 from david.s.gordon at intel.com ---
Maybe we should distinguish "User selected auto-fallback" (with INFO message?)
from "User parameter left at default => System selected *GuC* mode but with
auto-fallback in case that fails" which warrants a WARNING or ERROR.

Note that this is an UNSAFE parameter, so setting anything except "auto" will
taint the kernel. We don't encourage setting of any such parameters, and if you
do set them, you're assumed to know what you're doing, including whether an
error message is important or not.

Note also that we wouldn't even *try* to load the firmware if this wasn't a
platform for which the *POR* method of submission is to use the GuC. Therefore,
failure to find and load the firmware means that the system has been
misconfigured and is operating outside the POR parameter space.

That's quite different from the hypothetical case where we might be
pre-enabling a "future feature" in advance of it being POR (in which case it
wouldn't be an error for it not to be available). Auto-fallback to execlist
mode is just a way of keeping the system working rather than giving a blank
screen, and does not mean we want users or developers /accidentally/ running in
that mode without noticing.

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