Messages in this thread | | | Date | Tue, 11 Jul 2017 17:34:36 -0700 (PDT) | Subject | Re: sun4v+DMA related boot crash on 4.13-git | From | David Miller <> |
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From: Tushar Dave <tushar.n.dave@oracle.com> Date: Tue, 11 Jul 2017 15:38:21 -0700
> > > On 07/11/2017 02:48 PM, Meelis Roos wrote: >>>>>>> I tested yesterdayd 4.12+git on sparc64 to see if the sparc merge >>>>>>> works >>>>>>> fine, and on all of my sun4v machines (T1000, T2000, T5120) it crashed >>>>>>> on boot with DMA-related stacktrace (below). Allt he machines are >>>>>>> sun4v >>>>>>> physical machines, not VM-s. Older sun4 machines do not exhibit this >>>>>>> problem. >>>>>>> >>>>>>> Maybae DMA APi realted, maybe sparc64. Will try to bisect when I get >>>>>>> time. >>>>>> I see whats going on with panic. I will reproduce locally. Will get >>>>>> back >>>>>> soon. >>>>> This patch should fix panic. Please give it a try. >>>> >>>> Yes, this patch fixes it. Thank you for fixing it quickly! >>> Thanks for testing. Patch sent for sparc-next. >> Why sparc-next - it should go into 4.13 since 4.13 would break all >> niagara1 and niagara2 systems otherwise?This is sparc arch fix so I >> used sparc tree(in this case for sparc-next). > I am open to maintainers suggestions. Thanks.
If the bug is in Linus's tree the fix must target 'sparc' not 'sparc-next'.
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