linux-kernel - Re: [PATCH 2/4] panic: Allow taint flag for warnings to be changed from TAINT

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Date:	Tue, 23 Mar 2010 13:20:40 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-pci@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	linux-parisc@...r.kernel.org, linuxppc-dev@...abs.org,
	linux-s390@...r.kernel.org, linux-sh@...r.kernel.org
Subject: Re: [PATCH 2/4] panic: Allow taint flag for warnings to be changed
 from TAINT_WARN

On Mon, 2010-03-22 at 22:47 -0400, Andrew Morton wrote:
> On Sat, 20 Mar 2010 23:05:40 +0000 Ben Hutchings <ben@...adent.org.uk> wrote:
> 
> > WARN() is used in some places to report firmware or hardware bugs that
> > are then worked-around.  These bugs do not affect the stability of the
> > kernel and should not set the usual TAINT_WARN flag.  To allow for
> > this, add WARN_TAINT() and WARN_TAINT_ONCE() macros that take a taint
> > flag as argument.
> > 
> > Architectures that implement warnings using trap instructions instead
> > of calls to warn_slowpath_*() must now implement __WARN_TAINT(taint)
> > instead of __WARN().
> 
> When you say they "must now implement", I assume that you mean that
> they _do_ now implement, and that no additional architecture work is
> needed.

Right, I believe I fixed-up all the current architectures.  There might
be more architectures out there, unmerged as yet.

Ben.

-- 
Ben Hutchings
Any smoothly functioning technology is indistinguishable from a rigged demo.

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