Messages in this thread | | | Date | Tue, 5 Sep 2017 23:40:46 +0200 | From | Ingo Molnar <> | Subject | Re: [GIT PULL] x86/mm changes for v4.14: PCID support, 5-level paging support, Secure Memory Encryption support |
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* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> On Mon, Sep 4, 2017 at 2:31 AM, Ingo Molnar <mingo@kernel.org> wrote: > > > > Please pull the latest ... git tree from: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ... > > Hmm. My laptop (XPS 13) doesn't resume any more. It suspends, but > doesn't come back from resume. > > I immediately assumed it was the power management pulls I just did, > but then I started bisecting, and now it's actually pointing into the > various x86 pulls I did yesterday instead. > > Now, I'm reasonably early in my bisection (so literally "somewhere > between the 'docs-next' and the 'x86-mm-for-linus' pull), and maybe > the problem isn't even entirely repeatable and my bisection has > already gone off the rails, but I thought I'd give at least an early > heads-up about this thing. > > I'll have more as it bisects deeper into the merge window, but it > might be a while.
Hm, just as background, there are no regression reports I'm aware of against any of these trees, plus most of the dangerous commits have been in linux-next for at least two weeks - the majority of them even longer. The last 2-4 commits of x86/mm are fresher.
But it could be a regression in an older commit in x86/mm just as well, triggered by you for the first time :-/
Does your laptop CPU have PCID support by any chance? The CPU coming out of resume with PCID disabled and us not properly re-enabling it might be a possible failure mode.
Thanks,
Ingo
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