Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1255576

Re: Build regressions/improvements in v4.3-rc7

Show all headers | View raw

On Sun, Oct 25, 2015 at 11:39:15AM +0100, Geert Uytterhoeven wrote:
> On Sun, Oct 25, 2015 at 11:18 AM, Geert Uytterhoeven
> <geert@linux-m68k.org> wrote:
> > On Sun, Oct 25, 2015 at 11:12 AM, Geert Uytterhoeven
> > <geert@linux-m68k.org> wrote:
> >> JFYI, when comparing v4.3-rc7[1] to v4.3-rc6[3], the summaries are:
> >>   - build errors: +12/-4

From the quoted lines above one I got the impression that this was a
regression from v4.3-rc6 to 4.3-rc7, but that's not the case.  The
failing config also fails with v4.3-rc6.  It is however a regression
from v4.2 to v4.3-rc1, and started failing after the changes in
a5f4c561b3b19a ("ARM: 8415/1: early fixmap support for earlycon").

> >   + /home/kisskb/slave/src/arch/arm/kernel/patch.c: error: 'L_PTE_DIRTY' undeclared (first use in this function):  => 39:2
> >   + /home/kisskb/slave/src/arch/arm/kernel/patch.c: error: 'L_PTE_MT_WRITEBACK' undeclared (first use in this function):  => 39:2
> >   + /home/kisskb/slave/src/arch/arm/kernel/patch.c: error: 'L_PTE_PRESENT' undeclared (first use in this function):  => 39:2
> >   + /home/kisskb/slave/src/arch/arm/kernel/patch.c: error: 'L_PTE_XN' undeclared (first use in this function):  => 39:2
> >   + /home/kisskb/slave/src/arch/arm/kernel/patch.c: error: 'L_PTE_YOUNG' undeclared (first use in this function):  => 39:2
> 
> Caused by:
> 
> commit ab0615e2d6fb074764a3e4d05f1326fa2fdb4627
> Author: Rabin Vincent <rabin@rab.in>
> Date:   Thu Apr 24 23:28:57 2014 +0200
> 
>     arm: use fixmap for text patching when text is RO
> 
> Should the call to set_fixmap() in arch/arm/kernel/patch.c
> just be protected by #ifdef CONFIG_MMU?

Yes, and the call to clear_fixmap() too.  This part of the code will
never actually be called on !MMU because patch_map() will always exit
early with nothing to remap.  Will you send a patch?

(More code can be ifdef'd out to make a cleaner solution but I think that
 really needs a simplification of the locking to be done first, which is
 bit much for a late -rc.)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: Build regressions/improvements in v4.3-rc7 Geert Uytterhoeven <geert@linux-m68k.org> - 2015-10-25 11:20 +0100
  Re: Build regressions/improvements in v4.3-rc7 Geert Uytterhoeven <geert@linux-m68k.org> - 2015-10-25 11:40 +0100
    Re: Build regressions/improvements in v4.3-rc7 Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-10-25 15:10 +0100
      Re: Build regressions/improvements in v4.3-rc7 Geert Uytterhoeven <geert@linux-m68k.org> - 2015-10-25 18:40 +0100
        Re: Build regressions/improvements in v4.3-rc7 Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-10-25 19:30 +0100
        Re: Build regressions/improvements in v4.3-rc7 Afzal Mohammed <afzal.mohd.ma@gmail.com> - 2015-10-25 20:10 +0100
          Re: Build regressions/improvements in v4.3-rc7 Rabin Vincent <rabin@rab.in> - 2015-10-25 23:10 +0100
    Re: Build regressions/improvements in v4.3-rc7 Rabin Vincent <rabin@rab.in> - 2015-10-25 23:40 +0100
      Re: Build regressions/improvements in v4.3-rc7 Geert Uytterhoeven <geert@linux-m68k.org> - 2015-10-26 09:00 +0100
  Re: Build regressions/improvements in v4.3-rc7 Geert Uytterhoeven <geert@linux-m68k.org> - 2015-10-25 18:40 +0100

csiph-web