On Tue, 26 May 2020 14:58:07 +0000 Luis Chamberlain wrote: > To those new on CC -- this is intended to be a simple generic interface > to the kernel to annotate when the firwmare has crashed leaving the > driver or system in a questionable state, in the worst case requiring > full system reboot. This series is first addressing only a few > networking patches, however, I already have an idea of where such > firmware crashes happen across the tree. The goal with this series then > is to first introduce the simple framework, and only if that moves > forward will I continue to chug on with the rest of the drivers / > subsystems. > > This is *not* a networking specific problem only. > > This v3 augments the last series by introducing the uevent for panic > events, one of them is during tainting. The uvent mechanism is > independent from any of this firmware taint mechanism. I've also > addressed Jessica Yu's feedback. Given I've extended the patches a bit > with other minor cleanup which checkpatch.pl complains over, and since > this infrastructure is still being discussed, I've trimmed the patch > series size to only cover drivers for which I've received an Acked-by > from the respective driver maintainer, or where we have bug reports to > support such dire situations on the driver such as ath10k. > > During the last v2 it was discussed that we should instead use devlink > for this work, however the initial RFC patches produced by Jakub > Kicinski [0] shows how devlink is networking specific, and the intent > behind this series is to produce simple helpers which can be used by *any* > device driver, for any subsystem, not just networking. Subsystem > specific infrastructure to help address firwmare crashes may still make > sense, however that does not mean we *don't* need something even more > generic regardless of the subsystem the issue happens on. Since uevents > for taints are exposed, we now expose these through uapi as well, and > that was something which eventually had to happen given that the current > scheme of relying on sensible character representations for each taint > will not scale beyond the alphabet. Nacked-by: Jakub Kicinski <kuba@xxxxxxxxxx>
