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|---|---|
| From | Yinghai Lu <yinghai@kernel.org> |
| Newsgroups | linux.kernel |
| Subject | Re: CONFIG_HOLES_IN_ZONE and memory hot plug code on x86_64 |
| Date | Fri, 28 Aug 2015 07:30:01 +0200 |
| Message-ID | <q2koF-29v-3@gated-at.bofh.it> (permalink) |
| References | <pFLnY-5b1-15@gated-at.bofh.it> |
| X-Original-To | Steffen Persvold <sp@numascale.com> |
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On Fri, Jun 26, 2015 at 4:31 PM, Steffen Persvold <sp@numascale.com> wrote: > We’ve encountered an issue in a special case where we have a sparse E820 map [1]. > > Basically the memory hotplug code is causing a “kernel paging request” BUG [2]. the trace does not look like hotplug path. > > By instrumenting the function register_mem_sect_under_node() in drivers/base/node.c we see that it is called two times with the same struct memory_block argument : > > [ 1.901463] register_mem_sect_under_node: start = 80, end = 8f, nid = 0 > [ 1.908129] register_mem_sect_under_node: start = 80, end = 8f, nid = 1 Can you post whole log with SRAT related info? Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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Re: CONFIG_HOLES_IN_ZONE and memory hot plug code on x86_64 Yinghai Lu <yinghai@kernel.org> - 2015-08-28 07:30 +0200
Re: CONFIG_HOLES_IN_ZONE and memory hot plug code on x86_64 Steffen Persvold <sp@numascale.com> - 2015-08-28 09:20 +0200
Re: CONFIG_HOLES_IN_ZONE and memory hot plug code on x86_64 Yinghai Lu <yinghai@kernel.org> - 2015-08-28 18:00 +0200
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