Re: [PATCH 2/2] arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA

[Hanjun Guo]

Hi Robert,

On 2016/12/15 23:39, Robert Richter wrote:
> I was going to do some measurements but my kernel crashes now with a
> page fault in efi_rtc_probe():
>
> [   21.663393] Unable to handle kernel paging request at virtual address 20251000
> [   21.663396] pgd = ffff000009090000
> [   21.663401] [20251000] *pgd=0000010ffff90003
> [   21.663402] , *pud=0000010ffff90003
> [   21.663404] , *pmd=0000000fdc030003
> [   21.663405] , *pte=00e8832000250707
>
> The sparsemem config requires the whole section to be initialized.
> Your patches do not address this.

This patch set is running properly on D05, both the boot and
LTP MM stress test are ok, seems it's a different configuration
of memory mappings in firmware, just a stupid question, which
part is related to this problem, is it only the Reserved memory?

Thanks
Hanjun