linux-kernel - Re: [PATCH v2] um: Fix build error and kconfig for i386

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Date:	Fri, 25 Dec 2015 16:10:00 +0100
From:	Richard Weinberger <richard@....at>
To:	Josh Triplett <josh@...htriplett.org>,
	Mickaël Salaün <mic@...ikod.net>
Cc:	linux-kernel@...r.kernel.org, Jeff Dike <jdike@...toit.com>,
	user-mode-linux-devel@...ts.sourceforge.net,
	"Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
	Michal Marek <mmarek@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	stable@...r.kernel.org
Subject: Re: [PATCH v2] um: Fix build error and kconfig for i386

Am 25.12.2015 um 02:26 schrieb Josh Triplett:
> On Thu, Dec 24, 2015 at 01:09:45PM +0100, Mickaël Salaün wrote:
>>
>> On 23/12/2015 22:42, Josh Triplett wrote:
>>> On Wed, Dec 23, 2015 at 01:59:13PM +0100, Mickaël Salaün wrote:
>>>> Fix build error by selecting COREDUMP when X86_32 is selected:
>>>>
>>>> arch/x86/um/built-in.o: In function `elf_core_write_extra_phdrs':
>>>> (.text+0x3e62): undefined reference to `dump_emit'
>>>> arch/x86/um/built-in.o: In function `elf_core_write_extra_data':
>>>> (.text+0x3eef): undefined reference to `dump_emit'
>>>>
>>>> Fixes: 5d2acfc7b974 ("kconfig: make allnoconfig disable options behind EMBEDDED and EXPERT")
>>>> Signed-off-by: Mickaël Salaün <mic@...ikod.net>
>>>> Cc: Jeff Dike <jdike@...toit.com>
>>>> Cc: Richard Weinberger <richard@....at>
>>>> Cc: Josh Triplett <josh@...htriplett.org>
>>>> Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
>>>> Cc: Michal Marek <mmarek@...e.cz>
>>>> Cc: Andrew Morton <akpm@...ux-foundation.org>
>>>> Cc: Linus Torvalds <torvalds@...ux-foundation.org>
>>>
>>> I suppose um doesn't care deeply about binary size, but ideally I would
>>> suggest changing arch/x86/um/Makefile to make elfcore.c compiled in when
>>> CONFIG_ELF_CORE rather than CONFIG_BINFMT_ELF.
>>
>> That looks better! Since the first patch has been added to the mmots tree (but not yet in mmotm) I'll send a patch update instead of a new one reverting the first. I hope this is OK.
> 
> -mm regularly replaces patches with newer versions, so that ought to be
> fine.

Usually non-trivial UML stuff goes thought me.
As Josh noted, just post an updated version of the patch.
Either me or Andrew will pick it up.

Thanks,
//richard

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