> /* > * System calls. > @@ -508,6 +509,14 @@ BEGIN_FTR_SECTION > ldarx r6,0,r1 > END_FTR_SECTION_IFSET(CPU_FTR_STCX_CHECKS_ADDRESS) > > +BEGIN_FTR_SECTION > +/* > + * A cp_abort (copy paste abort) here ensures that when context switching, a > + * copy from one process can't leak into the paste of another. > + */ > + PPC_CP_ABORT
I think the alignment issue has been called out, but it is not clear from the changelog that we do this during syscall_exit/syscalls. And also, do we need to care about preemptions, etc by the scheduler? > +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300) > + > #ifdef CONFIG_PPC_BOOK3S > /* Cancel all explict user streams as they will have no use after context > * switch and will stop the HW from creating streams itself _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
