On Tue, 2006-10-24 at 23:21 -0700, Zachary Amsden wrote: > Rusty Russell wrote: > > On Tue, 2006-10-24 at 22:11 -0700, Zachary Amsden wrote: > >> +#if defined(CONFIG_PARAVIRT) && !defined(USE_REAL_IO) > >> +#include <asm/paravirt.h> > >> +#else > >> > > > > USE_REAL_IO? Is this defined anywhere? Or just future-proofing? > > > > It has to be used for SMP bootstrapping - IPI acceptance requires real > time cross-processor delay, even in a VM No, that's USE_REAL_TIME_DELAY: USE_REAL_IO is not currently defined anywhere AFAICT. > - and also can be added by a > top-level define to kernel compiles for driver domains for Xen to give > real time device delays. Makes sense... Rusty. -- Help! Save Australia from the worst of the DMCA: http://linux.org.au/law
