nvdimm,pmem: makedumpfile: __vtop4_x86_64: Can't get a valid pte.

[lizhijian at fujitsu.com]

On 28/11/2022 20:53, Eliot Moss wrote:
> On 11/28/2022 7:04 AM, lizhijian at fujitsu.com wrote:
>> Hi folks,
>>
>> I'm going to make crash coredump support pmem region. So
>> I have modified kexec-tools to add pmem region to PT_LOAD of vmcore.
>>
>> But it failed at makedumpfile, log are as following:
>>
>> In my environment, i found the last 512 pages in pmem region will cause the error.
> 
> I wonder if an issue I reported is related: when set up to map
> 2Mb (huge) pages, the last 2Mb of a large region got mapped as
> 4Kb pages, and then later, half of a large region was treated
> that way.
> 
Could you share the url/link ? I'd like to take a look



> I've seen no response to the report, but assume folks have
> been busy with other things or perhaps giving this lower
> priority since it does not exactly *fail*, just not work as
> a user might think it should.
> 
> Regards - Eliot Moss