On 2015-02-21, at 3:31 PM, John David Anglin wrote: > On 2015-02-20, at 4:36 PM, Carlos O'Donell wrote: > >> On Thu, Apr 3, 2014 at 4:26 PM, Helge Deller <deller@xxxxxx> wrote: >>> In current eglibc it's set to 0x00400000 >>> That's what my eglibc-patch changes... >>> I'm currently building a eglibc on hpviz with SHMLBA set to 4096 (__getpagesize()). >> >> Anyone object to me fixing this upstream by making SHMLBA match the kernel? >> >> I plan to use a fixed value of 4096, since I never expect hppa >> userspace to have to care (even if the kernel uses superpages). > > We currently use (__getpagesize ()) in Debian and this seems to be a common definition. > Is there a performance advantage in using 4096? > >> >> Please correct me if I'm wrong. > > > At one time, we thought this value needed to be 4 MB. Helge was working on improving the mmap > allocation scheme but this work stalled after some improvement. I can't remember the issues and how > they relate to SHMLBA. Actually, the number was 4 Mb (bit). Dave -- John David Anglin dave.anglin@xxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
