* x86_64 compile spewing hundreds of warnings - started 2.6.15-git8
@ 2006-03-02 19:35 Martin Bligh
2006-03-02 19:49 ` Andi Kleen
2006-07-31 16:14 ` Martin Bligh
0 siblings, 2 replies; 4+ messages in thread
From: Martin Bligh @ 2006-03-02 19:35 UTC (permalink / raw)
To: linux-kernel, Andi Kleen
between 2.6.15-git7 and 2.6.15-git8 we started getting hundreds of
compile warnings:
-git7: http://test.kernel.org/20295/debug/test.log.0
-git8: http://test.kernel.org/20402/debug/test.log.0
Warnings look like this:
include/asm/bitops.h: In function `load_elf32_binary':
include/asm/bitops.h:30: warning: read-write constraint does not allow a
register
include/asm/bitops.h:30: warning: read-write constraint does not allow a
register
include/asm/bitops.h:65: warning: read-write constraint does not allow a
register
include/asm/bitops.h:65: warning: read-write constraint does not allow a
register
include/asm/bitops.h:30: warning: read-write constraint does not allow a
register
include/asm/bitops.h:30: warning: read-write constraint does not allow a
register
include/asm/bitops.h:65: warning: read-write constraint does not allow a
register
include/asm/bitops.h:65: warning: read-write constraint does not allow a
register
include/asm/bitops.h:30: warning: read-write constraint does not allow a
register
include/asm/bitops.h:30: warning: read-write constraint does not allow a
register
include/asm/bitops.h:65: warning: read-write constraint does not allow a
register
include/asm/bitops.h:65: warning: read-write constraint does not allow a
register
What do these mean? And how do we get rid of it?
Presumably caused by this:
http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=636dd2b7def5c9c72551b51d4d516a65c269de08
or this:
http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=92934bcbf96bc9dc931c40ca5f1a57685b7b813b
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: x86_64 compile spewing hundreds of warnings - started 2.6.15-git8
2006-03-02 19:35 x86_64 compile spewing hundreds of warnings - started 2.6.15-git8 Martin Bligh
@ 2006-03-02 19:49 ` Andi Kleen
2006-07-31 16:14 ` Martin Bligh
1 sibling, 0 replies; 4+ messages in thread
From: Andi Kleen @ 2006-03-02 19:49 UTC (permalink / raw)
To: Martin Bligh; +Cc: linux-kernel
On Thursday 02 March 2006 20:35, Martin Bligh wrote:
> include/asm/bitops.h:65: warning: read-write constraint does not allow a
> register
>
>
> What do these mean?
They mean you have a buggy compiler.
> And how do we get rid of it?
>
> Presumably caused by this:
>
> http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=636dd2b7def5c9c72551b51d4d516a65c269de08
>
> or this:
>
> http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=92934bcbf96bc9dc931c40ca5f1a57685b7b813b
It was the bitops.h constrain change.
The problem is that reverting them would be readding the problem. Maybe we need to
#ifdef it.
-Andi
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: x86_64 compile spewing hundreds of warnings - started 2.6.15-git8
2006-03-02 19:35 x86_64 compile spewing hundreds of warnings - started 2.6.15-git8 Martin Bligh
2006-03-02 19:49 ` Andi Kleen
@ 2006-07-31 16:14 ` Martin Bligh
2006-07-31 20:19 ` Andi Kleen
1 sibling, 1 reply; 4+ messages in thread
From: Martin Bligh @ 2006-07-31 16:14 UTC (permalink / raw)
To: Martin Bligh; +Cc: linux-kernel, Andi Kleen, Andy Whitcroft
Martin Bligh wrote:
> between 2.6.15-git7 and 2.6.15-git8 we started getting hundreds of
> compile warnings:
>
> -git7: http://test.kernel.org/20295/debug/test.log.0
> -git8: http://test.kernel.org/20402/debug/test.log.0
>
> Warnings look like this:
>
> include/asm/bitops.h: In function `load_elf32_binary':
> include/asm/bitops.h:30: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:30: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:65: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:65: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:30: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:30: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:65: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:65: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:30: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:30: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:65: warning: read-write constraint does not allow a
> register
> include/asm/bitops.h:65: warning: read-write constraint does not allow a
> register
>
>
> What do these mean? And how do we get rid of it?
>
> Presumably caused by this:
>
> http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=636dd2b7def5c9c72551b51d4d516a65c269de08
>
>
> or this:
>
> http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=92934bcbf96bc9dc931c40ca5f1a57685b7b813b
>
>
There were rumblings about changing these checks around a bit, but
nothing happened and the warnings are still there ... any chance of
fixing this?
M.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: x86_64 compile spewing hundreds of warnings - started 2.6.15-git8
2006-07-31 16:14 ` Martin Bligh
@ 2006-07-31 20:19 ` Andi Kleen
0 siblings, 0 replies; 4+ messages in thread
From: Andi Kleen @ 2006-07-31 20:19 UTC (permalink / raw)
To: Martin Bligh; +Cc: linux-kernel, Andy Whitcroft
On Monday 31 July 2006 18:14, Martin Bligh wrote:
> Martin Bligh wrote:
> > between 2.6.15-git7 and 2.6.15-git8 we started getting hundreds of
> > compile warnings:
> >
> > -git7: http://test.kernel.org/20295/debug/test.log.0
> > -git8: http://test.kernel.org/20402/debug/test.log.0
> >
> > Warnings look like this:
> >
> > include/asm/bitops.h: In function `load_elf32_binary':
> > include/asm/bitops.h:30: warning: read-write constraint does not allow a
> > register
Hmm, as far as I can see I do the same as i386 with these constraints.
Are you sure i386 doesn't warn either?
-Andi
^ permalink raw reply [flat|nested] 4+ messages in thread
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2006-03-02 19:35 x86_64 compile spewing hundreds of warnings - started 2.6.15-git8 Martin Bligh
2006-03-02 19:49 ` Andi Kleen
2006-07-31 16:14 ` Martin Bligh
2006-07-31 20:19 ` Andi Kleen
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