On Fri 20-04-12 12:32:38, Yinghai Lu wrote: > On Fri, Apr 20, 2012 at 12:29 PM, Michal Hocko <mhocko@xxxxxxx> wrote: > > This is what I can see in the current (Linus) git: > > ./arch/sparc/Kconfig: select SPARSEMEM_VMEMMAP_ENABLE > > ./arch/powerpc/Kconfig: select SPARSEMEM_VMEMMAP_ENABLE > > ./arch/ia64/Kconfig: select SPARSEMEM_VMEMMAP_ENABLE > > ./arch/s390/Kconfig: select SPARSEMEM_VMEMMAP_ENABLE > > ./arch/s390/Kconfig: select SPARSEMEM_VMEMMAP > > ./arch/x86/Kconfig: select SPARSEMEM_VMEMMAP_ENABLE if X86_64 > > > > So there are more arches which enable SPARSEMEM_VMEMMAP so the function > > is used. Or am I missing something? > > MAX_DMA32_PFN is not defined for them. Ahh, you are right except that it is defined for x86 but that one uses nobootmem. I missed that point. Thanks -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>