On Mon 04-01-21 16:15:23, David Hildenbrand wrote: > On 04.01.21 16:10, Michal Hocko wrote: [...] > Do the physical addresses you see fall into the same section as boot > memory? Or what's around these addresses? Yes I am getting a garbage for the first struct page belonging to the pmem section [1] [ 0.020161] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x603fffffff] [ 0.020163] ACPI: SRAT: Node 4 PXM 4 [mem 0x6060000000-0x11d5fffffff] non-volatile The pfn without the initialized struct page is 0x6060000. This is a first pfn in a section. --- [1] it shares the same memory block with the regular memory as those are in the same 2G range. -- Michal Hocko SUSE Labs