linux-kernel - Re: + spin_lock_irq-enable-interrupts-while-spinning-i386-implementation.patch added to -mm tree

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070107210658.GA7436@localhost.localdomain>
Date:	Sun, 7 Jan 2007 13:06:58 -0800
From:	Ravikiran G Thirumalai <kiran@...lex86.org>
To:	Andrew Morton <akpm@...l.org>
Cc:	Daniel Walker <dwalker@...sta.com>, linux-kernel@...r.kernel.org,
	ak@...e.de, md@...gle.com, mingo@...e.hu,
	pravin.shelar@...softinc.com, shai@...lex86.org
Subject: Re: + spin_lock_irq-enable-interrupts-while-spinning-i386-implementation.patch added to -mm tree

On Sun, Jan 07, 2007 at 12:05:03PM -0800, Andrew Morton wrote:
> On Sun, 07 Jan 2007 05:24:45 -0800
> Daniel Walker <dwalker@...sta.com> wrote:
> 
> > Now it fails with CONFIG_PARAVIRT off .
> > 
> > scripts/kconfig/conf -s arch/i386/Kconfig
> >   CHK     include/linux/version.h
> >   CHK     include/linux/compile.h
> >   CHK     include/linux/utsrelease.h
> >   UPD     include/linux/compile.h
> >   CC      arch/i386/kernel/asm-offsets.s
> > In file included from include/linux/spinlock.h:88,
> >                  from include/linux/module.h:10,
> >                  from include/linux/crypto.h:22,
> >                  from arch/i386/kernel/asm-offsets.c:8:
> > include/asm/spinlock.h: In function '__raw_spin_lock_irq':
> > include/asm/spinlock.h:100: error: expected string literal before '__CLI_STI_INPUT_ARGS'
> 
> bah.
> 
> --- a/include/asm-i386/spinlock.h~spin_lock_irq-enable-interrupts-while-spinning-i386-implementation-fix-fix
> +++ a/include/asm-i386/spinlock.h
> @@ -14,6 +14,7 @@
>  #define STI_STRING	"sti"
>  #define CLI_STI_CLOBBERS
>  #define CLI_STI_INPUT_ARGS
> +#define __CLI_STI_INPUT_ARGS
>  #endif /* CONFIG_PARAVIRT */

Apologies for the broken patch and thanks for the fix,
But, the above is needed to fix the build even with CONFIG_PARAVIRT!!!
Apparently because arch/i386/mm/boot_ioremap.c undefs CONFIG_PARAVIRT.

Question is, now we have 2 versions of spin_locks_irq implementation
with CONFIG_PARAVIRT -- one with regular cli sti and other with virtualized 
CLI/STI -- sounds odd!

Thanks,
Kiran
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/