On Sat, Feb 10, 2018 at 04:08:16PM -0800, Hugh Dickins wrote:
> On Fri, 9 Feb 2018, Eric Biggers wrote:
>
> > This is a build fix for the 4.4 PTI backport. 4.4 kernels do not have
> > commit be7635e7287e ("arch, ftrace: for KASAN put hard/soft IRQ entries
> > into separate sections") which went into 4.6. Consequently, the
> > irqentry sections are only created when CONFIG_FUNCTION_GRAPH_TRACER is
> > enabled, not also when CONFIG_KASAN is enabled. Therefore, fix the
> > condition for trying to add a user mapping for this section.
> >
> > This fixes the following build error:
> >
> > arch/x86/mm/kaiser.c: In function ‘kaiser_init’:
> > arch/x86/mm/kaiser.c:367:33: error: ‘__irqentry_text_start’ undeclared (first use in this function)
> > kaiser_add_user_map_ptrs_early(__irqentry_text_start,
> > [...]
> >
> > Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
>
> Yep, sorry about that, thanks Eric:
> Acked-by: Hugh Dickins <hughd@xxxxxxxxxx>
Thanks, now queued up.
greg k-h