On Jan 29, 10:23pm, Martin Husemann wrote: } On Fri, Jan 29, 2016 at 02:09:17PM -0700, Swift Griggs wrote: } > } > Can any of the kernel gods comment on if PAE is still considered unstable? } > It's hard to tell if it's disabled by default because it conflicts with } > the Xen memory model, or if it's because it causes stability issues.
PAE is required for Xen, at least for dom0. BTW, Xen questions are best addresses to port-xen. } Not unstable (AFAICT), but it comes with a performance penalty. } } In some environments it makes sense (e.g. a i386 xen domU on a 64bit } setup and little virtual memory allocated - I'm running one of those } myself), but in most cases a straight i386 kernel (for max 4GB } installed) or a straight amd64 kernel otherwise are preferable. } } But if you go with a amd64 kernel, you still can install i386 userland } and have all the same benefits you get with i386-pae. Modulo bugs in the } compat_netbsd32 emulation the userland side of things should be the same. Also, differences in device numbers. Be sure to use an amd64 version of MAKEDEV. } There are a few minor issues (e.g. i386 savecore can not deal with a amd64 } kernel crash dump). We use this type of setup as default on mips64 and } are trying to minimize the fallout. } }-- End of excerpt from Martin Husemann