linux-kernel - Re: [RESEND PATCH] sysctl: Enable IA64 "ignore-unaligned-usertrap" to be used cross-arch

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Message-ID: <CA+8MBbKk0Gd98KBxPY9QNw7wHGAEx8K6+iKzxDAcO-s7Py9_HA@mail.gmail.com>
Date:	Tue, 8 Jan 2013 15:43:32 -0800
From:	Tony Luck <tony.luck@...el.com>
To:	Vineet Gupta <Vineet.Gupta1@...opsys.com>
Cc:	Fenghua Yu <fenghua.yu@...el.com>, linux-kernel@...r.kernel.org,
	linux-ia64@...r.kernel.org, linux-arch@...r.kernel.org,
	arnd@...db.de, "Eric W. Biederman" <ebiederm@...ssion.com>,
	Serge Hallyn <serge.hallyn@...onical.com>
Subject: Re: [RESEND PATCH] sysctl: Enable IA64 "ignore-unaligned-usertrap" to
 be used cross-arch

On Wed, Jan 2, 2013 at 10:47 PM, Vineet Gupta
<Vineet.Gupta1@...opsys.com> wrote:

> verbosw warnings on unaligned access emaultion.
"verbose", "emulation"

> While the exact menchaincs (ignore/shout) are still arch specific, we
"mechanics"

> +config SYSCTL_ARCH_UNALIGN_NO_WARN
> +       bool
> +       help
> +         Enable support for /proc/sys/kernel/ignore-unaligned-usertrap
> +         Allows arch to define/use @no_unaligned_warning to possbly warn about
"possibly"
> +         unaligned access emulation going on under the hood.
> +         see arch/ia64/kernel/unaligned.c for reference

It doesn't seem right to point users at an ia64 specific file now
that you are making this available to all arches.

-Tony
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