On Tue, May 10, 2016 at 1:56 PM, Mateusz Guzik <mgu...@redhat.com> wrote: > This fixes 731e33e39a5b95ad770 "Remove FSBASE/GSBASE < 4G optimization" > > Signed-off-by: Mateusz Guzik <mgu...@redhat.com> > --- > arch/x86/kernel/process_64.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c > index 4285f6a..6b16c36 100644 > --- a/arch/x86/kernel/process_64.c > +++ b/arch/x86/kernel/process_64.c > @@ -541,6 +541,7 @@ long do_arch_prctl(struct task_struct *task, int code, > unsigned long addr) > load_gs_index(0); > ret = wrmsrl_safe(MSR_KERNEL_GS_BASE, addr); > } > + put_cpu(); > break; > case ARCH_SET_FS: > /* Not strictly needed for fs, but do it for symmetry > -- > 1.8.3.1 >
Ingo, can you apply this before the merge window opens? I just noticed that you weren't cc'd, so I'll repeat my ack: Acked-by: Andy Lutomirski <l...@kernel.org> And I'll ask, since IIRC you wrote it: would it make sense to augment lockdep_sys_exit to see if preemption got left disabled? Thanks, Andy
