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

[Eliot Moss]

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.

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