> > +#ifdef CONFIG_PPC_BOOK3S_64 > > +_GLOBAL(_save_tar) > > + /* > > + * Back up the TAR across context switches. Note that the TAR is not > > + * available for use in the kernel. (To provide this, the TAR should > > + * be backed up/restored on exception entry/exit instead, and be in > > + * pt_regs. FIXME, this should be in pt_regs anyway (for debug).) > > + */ > > + mfspr r0,SPRN_TAR > > + std r0,THREAD_TAR(r3) > > + blr > > +#endif > > Why not do this in C, as in prev->tar = mfspr(SPRN_TAR); ?
Good point! I'd just copied the original code which was inline asm in _switch(). Thanks, Mikey _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
