On 12/19/2017 6:59 PM, Daniel Vetter wrote:
On Mon, Dec 18, 2017 at 09:42:13AM -0800, Linus Torvalds wrote:
On Sun, Dec 17, 2017 at 11:11 PM, Daniel Vetter <daniel@xxxxxxxx> wrote:
This didn't seem to have made it into -rc4. Anything needed to get it
going?
Do you actually see the problem in -rc4?
Because we ended up removing the cross-release checking due to other
developers complaining. It seemed to need a lot more work before it
was ready.
So I suspect the patch is simply not relevant any more (even if it's
not necessarily wrong either).
Awww ... I like the cross release stuff, it's catching lots of good bugs
for us - writing a gpu memory manager that's supposed to interface with
the core one ain't the simplest thing to get right. That's also why we're
going around and fixing up fallout (we've worked on the worker annotations
for 4.14 too). I guess next release, hopefully.
I think between 4.14 and 4.15 attemps cross-release spotted around 5 or so
genuine deadlocks in i915 code. And at least right now, with the current
set of fixups our CI runs are splat-free. So at least a Kconfig option
would be nice, to be able to enable it easily when you want to.
Wrt us not noticing: Getting the patches in through normal means takes too
long, so we constantly carry arounda bunch of fixup patches to address
serious issues that block CI (no lockdep is no good CI). That's why we
won't immediately notice when an issue is resolved some other way.
Hello Ingo and Linus,
IMO, taking it off by default is enough. What fs folk actually
wanted is not to remove whole stuff but make it off by default.
Cross-release logic itself makes sense. Please consider it back
and apply my patch making it off by default.
I will do what I can do for the classification in layered fs.
--
Thanks,
Byungchul
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