static inline void save_sprs(struct thread_struct *t)
{
#ifdef CONFIG_ALTIVEC
	if (cpu_has_feature(CPU_FTR_ALTIVEC))
		t->vrsave = mfspr(SPRN_VRSAVE);
#endif
#ifdef CONFIG_PPC_BOOK3S_64
	if (cpu_has_feature(CPU_FTR_DSCR))
		t->dscr = mfspr(SPRN_DSCR);

	if (cpu_has_feature(CPU_FTR_ARCH_207S)) {
		t->bescr = mfspr(SPRN_BESCR);
		t->ebbhr = mfspr(SPRN_EBBHR);
		t->ebbrr = mfspr(SPRN_EBBRR);

		t->fscr = mfspr(SPRN_FSCR);

		/*
		 * 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).)
		 */
		t->tar = mfspr(SPRN_TAR);
	}
#endif

	thread_pkey_regs_save(t);
}
Unknown