On Tue, 26 Aug 2014, Ralf Baechle wrote: > > I cannot reproduce it on demand, so I'm not really sure what the cause could > > be. PAGE_SIZE should be largely transparent to userland these days, so I am > > wondering if this might be more oddities w/ an R14000 CPU. > > This sound very unlikely as the CPU was primarily designed to run IRIX and > SGI's systems were using 16k or even 64k page size. > > What userland are you running and how old is it? Are you seeing different > results for 16k and 64k? FWIW, I've been always using the 16k page size exclusively with my 64-bit userland and my SWARM board using the SB-1/BCM1250 processor (with either endianness) and never had issues even with stuff as intensive as native GCC bootstrapping (with all the languages enabled such as Ada and Java) or glibc builds. It's been like 8 years now and quite recent kernels like from two months ago gave me no trouble either. So it must be something specific to the configuration, my first candidates to look at would be the generated TLB and cache handlers, that are system-specific. Maciej
