On Mon, Jan 11, 2021 at 09:40:16PM +0200, Mike Rapoport wrote: > From: Mike Rapoport <rppt@xxxxxxxxxxxxx> > > The first 4Kb of memory is a BIOS owned area and to avoid its allocation > for the kernel it was not listed in e820 tables as memory. As the result, > pfn 0 was never recognised by the generic memory management and it is not a > part of neither node 0 nor ZONE_DMA. So, since it never was added to memblock.memory structs, it was not initialized by init_unavailable_mem, right? -- Oscar Salvador SUSE L3
