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  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Mon, 26 Oct 2009 11:10:52 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	Claudio Scordino <claudio@...dence.eu.com>
Cc:	linux-kernel@...r.kernel.org, rmk+kernel@....linux.org.uk,
	linux-arm-kernel@...ts.arm.linux.org.uk, akpm@...ux-foundation.org
Subject: Re: [PATCH][RE-SUBMIT] Default setting of the ARM_UNWIND option

On Mon, 2009-10-26 at 09:27 +0100, Claudio Scordino wrote:
> My ARM board hanged at the initial "Calibrating delay loop" message.
> 
> After some inspection, I found out the problem to be with commit
> adf8b37bafc1495393201a2ae4235846371870d0. This commit introduces stack
> unwinding for ARM, and set it enabled by default. However, it seems to
> not work with buggy or not-EABI compilers.
> 
> My suggestion is to keep the feature (which is fine) but change the
> default setting of the option (see the attached patch).

The option still depends on EXPERIMENTAL, so you get ARM_UNWIND on when
enabling that.

I'm more in favour of a #warning on #error in the unwind.c file based on
the compiler version rather than not having it on by default. The reason
is that people reported performance improvements when compiling the
kernel without frame pointers.

-- 
Catalin

--
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/

Powered by blists - more mailing lists