On Wed, Feb 21, 2018 at 02:51:19PM +0100, Jonathan Neuschäfer wrote: [...] > While looking through arch/powerpc/mm, I noticed that there's a > page_is_ram function, which simply uses the memblocks directly, on > PPC32. Oops, I misread the code here. memblock is used on PPC64. > It seems like a good candidate for the RAM check in > __ioremap_caller, except that there's this code, which apparently > trashes memblock 0 completely on non-CONFIG_NEED_MULTIPLE_NODES: > > https://elixir.bootlin.com/linux/v4.16-rc2/source/arch/powerpc/mm/mem.c#L223 > > > Thanks, > Jonathan Neuschäfer
Attachment:
signature.asc
Description: PGP signature
