On Tue, Jan 27, 2015 at 12:57:20PM -0800, Linus Torvalds wrote:
> [ Adding 'linux-arch' to the recipients, since this touches pretty
> much all architectures ]
[...]
> Can people take a look?
>
> diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
> index 811937bb90be..9065d5aa3932 100644
> --- a/arch/s390/mm/fault.c
> +++ b/arch/s390/mm/fault.c
> @@ -374,6 +374,12 @@ static noinline void do_fault_error(struct pt_regs *regs, int fault)
> do_no_context(regs);
> else
> pagefault_out_of_memory();
> + } else if (fault & VM_FAULT_SIGSEGV) {
> + /* Kernel mode? Handle exceptions or die */
> + if (!user_mode(regs))
> + do_no_context(regs);
> + else
> + do_sigsegv(regs, SEGV_MAPERR);
s390 still compiles and boots with this patch applied.
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