On Fri, 2016-01-15 at 16:54 +1100, Cyril Bur wrote: > On Fri, 15 Jan 2016 16:42:22 +1100 > Michael Neuling <mi...@neuling.org> wrote: > > > On Fri, 2016-01-15 at 16:04 +1100, Cyril Bur wrote: > > > With threads leaving the math bits enabled in their saved MSR to > > > indicate > > > that the hardware is hot and a restore is not needed, children > > > need to turn > > > it off as when they do get scheduled, there's no way their > > > registers could > > > have been hot. > > > > Is this a bug in the current code? > > > > You're very consistent: > > https://lists.ozlabs.org/pipermail/linuxppc-dev/2015-November/136469. > html
Fix the comment to explain why it's not a bug now. Mikey > ;) > > > Mikey > > > > > Signed-off-by: Cyril Bur <cyril...@gmail.com> > > > --- > > > arch/powerpc/kernel/process.c | 1 + > > > 1 file changed, 1 insertion(+) > > > > > > diff --git a/arch/powerpc/kernel/process.c > > > b/arch/powerpc/kernel/process.c > > > index dccc87e..e0c3d2d 100644 > > > --- a/arch/powerpc/kernel/process.c > > > +++ b/arch/powerpc/kernel/process.c > > > @@ -1307,6 +1307,7 @@ int copy_thread(unsigned long clone_flags, > > > unsigned long usp, > > > > > > f = ret_from_fork; > > > } > > > + childregs->msr &= ~(MSR_FP|MSR_VEC|MSR_VSX); > > > sp -= STACK_FRAME_OVERHEAD; > > > > > > /* > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
