Re: CONFIG_HOLES_IN_ZONE and memory hot plug code on x86_64

2015-08-28 Thread Yinghai Lu
On Thu, Aug 27, 2015 at 11:42 PM, Steffen Persvold wrote: >>Can you post whole log with SRAT related info? > > I can probably reproduce again and get full logs when I get run time on the > system again, but here’s some output that we saved in our internal Jira case : > > [0.00] NUMA: Init

Re: CONFIG_HOLES_IN_ZONE and memory hot plug code on x86_64

2015-08-28 Thread Steffen Persvold
On 27/08/15 22:20 , "yhlu.ker...@gmail.com on behalf of Yinghai Lu" wrote: >On Fri, Jun 26, 2015 at 4:31 PM, Steffen Persvold 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

Re: CONFIG_HOLES_IN_ZONE and memory hot plug code on x86_64

2015-08-27 Thread Yinghai Lu
On Fri, Jun 26, 2015 at 4:31 PM, Steffen Persvold 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 t