linux-kernel - Re: Build regressions/improvements in v3.18-rc2

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Date:	Tue, 28 Oct 2014 10:50:38 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:	Peter Foley <pefoley2@...oley.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Erik Bosman <ejbosman@...vu.nl>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Build regressions/improvements in v3.18-rc2

On Tue, Oct 28, 2014 at 10:36 AM, Geert Uytterhoeven
<geert@...ux-m68k.org> wrote:
> JFYI, when comparing v3.18-rc2[1]  to v3.18-rc1[3], the summaries are:
>   - build errors: +16/-17

  + /scratch/kisskb/src/Documentation/mic/mpssd/mpssd.c: error: (near
initialization for 'virtblk_dev_page.blk_config.capacity'):  => 152:3
  + /scratch/kisskb/src/Documentation/mic/mpssd/mpssd.c: error: (near
initialization for 'virtblk_dev_page.blk_config.seg_max'):  => 151:3
  + /scratch/kisskb/src/Documentation/mic/mpssd/mpssd.c: error: (near
initialization for 'virtblk_dev_page.host_features'):  => 149:3
  + /scratch/kisskb/src/Documentation/mic/mpssd/mpssd.c: error: (near
initialization for 'virtnet_dev_page.host_features'):  => 119:3
  + /scratch/kisskb/src/Documentation/mic/mpssd/mpssd.c: error:
braced-group within expression allowed only inside a function:  =>
146:10, 93:10, 116:10, 96:10, 113:10
  + /scratch/kisskb/src/Documentation/mic/mpssd/mpssd.c: error:
initializer element is not constant:  => 151:3, 119:3, 152:3, 149:3

powerpc-randconfig

On big-endian, the htoleX macros expand to function calls,
which is not compatible with static initialization.

  + /scratch/kisskb/src/Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c:
error: impossible register constraint in 'asm':  => 34:1
  + /scratch/kisskb/src/Documentation/prctl/disable-tsc-on-off-stress-test.c:
error: impossible register constraint in 'asm':  => 36:1
  + /scratch/kisskb/src/Documentation/prctl/disable-tsc-test.c: error:
impossible register constraint in 'asm':  => 36:1

powerpc-randconfig

Embedding x86-specific asm in sample code is not portable.
Building this should probably depend on x86?

> [1] http://kisskb.ellerman.id.au/kisskb/head/8016/ (all 119 configs)
> [3] http://kisskb.ellerman.id.au/kisskb/head/8002/ (all 119 configs)


Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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