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| Started by | Hanjun Guo <hanjun.guo@linaro.org> |
|---|---|
| First post | 2016-09-27 08:30 +0200 |
| Last post | 2016-10-06 11:20 +0200 |
| Articles | 2 — 2 participants |
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Re: [PATCH] arm64, numa: Add cpu_to_node() implementation. Hanjun Guo <hanjun.guo@linaro.org> - 2016-09-27 08:30 +0200
Re: [PATCH] arm64, numa: Add cpu_to_node() implementation. Robert Richter <rric@kernel.org> - 2016-10-06 11:20 +0200
| From | Hanjun Guo <hanjun.guo@linaro.org> |
|---|---|
| Date | 2016-09-27 08:30 +0200 |
| Subject | Re: [PATCH] arm64, numa: Add cpu_to_node() implementation. |
| Message-ID | <slU3U-64K-1@gated-at.bofh.it> |
On 09/20/2016 09:21 PM, Robert Richter wrote: > On 20.09.16 19:32:34, Hanjun Guo wrote: >> On 09/20/2016 06:43 PM, Robert Richter wrote: > >>> Unfortunately either your nor my code does fix the BUG_ON() I see with >>> the numa kernel: >>> >>> kernel BUG at mm/page_alloc.c:1848! >>> >>> See below for the core dump. It looks like this happens due to moving >>> a mem block where first and last page are mapped to different numa >>> nodes, thus, triggering the BUG_ON(). >> >> Didn't triggered it on our NUMA hardware, could you provide your >> config then we can have a try? > > Config attached. Other configs with an initrd fail too. hmm, we can't reproduce it on our hardware, do we need to run some specific stress test on it? Thanks Hanjun
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| From | Robert Richter <rric@kernel.org> |
|---|---|
| Date | 2016-10-06 11:20 +0200 |
| Message-ID | <spd0m-6Av-5@gated-at.bofh.it> |
| In reply to | #1491702 |
On 27.09.16 14:26:08, Hanjun Guo wrote: > On 09/20/2016 09:21 PM, Robert Richter wrote: > >On 20.09.16 19:32:34, Hanjun Guo wrote: > >>On 09/20/2016 06:43 PM, Robert Richter wrote: > > > >>>Unfortunately either your nor my code does fix the BUG_ON() I see with > >>>the numa kernel: > >>> > >>> kernel BUG at mm/page_alloc.c:1848! > >>> > >>>See below for the core dump. It looks like this happens due to moving > >>>a mem block where first and last page are mapped to different numa > >>>nodes, thus, triggering the BUG_ON(). > >> > >>Didn't triggered it on our NUMA hardware, could you provide your > >>config then we can have a try? > > > >Config attached. Other configs with an initrd fail too. > > hmm, we can't reproduce it on our hardware, do we need > to run some specific stress test on it? No, it depends on the efi memory zones marked reserved. See my other thread on this where I have attached mem ranges from the log. I have a fix available already. Thanks, -Robert
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