On 12 September 2014 23:14, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > On Fri, 12 Sep 2014 22:17:23 +0200 Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> wrote: > >> In order to make the static inline function is_zero_pfn() callable by >> modules, export its symbol dependencies 'zero_pfn' and (for s390 and >> mips) 'zero_page_mask'. > > So hexagon and score get the export if/when needed. > Exactly. >> We need this for KVM, as CONFIG_KVM is a tristate for all supported >> architectures except ARM and arm64, and testing a pfn whether it refers >> to the zero page is required to correctly distinguish the zero page >> from other special RAM ranges that may also have the PG_reserved bit >> set, but need to be treated as MMIO memory. >> >> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> >> --- >> arch/mips/mm/init.c | 1 + >> arch/s390/mm/init.c | 1 + >> mm/memory.c | 2 ++ > > Looks OK to me. Please include the patch in whichever tree is is that > needs it, and merge it up via that tree. > Thanks. @Paolo: could you please take this (with Andrew's ack), and put it before the patch you took earlier today? Thanks, Ard.
