linux-kernel - Re: [PATCH] APEI/ERST: Fix error message formatting

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Message-ID: <1374686598.18818.18.camel@joe-AO722>
Date:	Wed, 24 Jul 2013 10:23:18 -0700
From:	Joe Perches <joe@...ches.com>
To:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
Cc:	Borislav Petkov <bp@...en8.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <bp@...e.de>,
	Anton Vorontsov <anton@...msg.org>,
	Colin Cross <ccross@...roid.com>,
	Kees Cook <keescook@...omium.org>,
	Tony Luck <tony.luck@...el.com>, Len Brown <lenb@...nel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-acpi@...r.kernel.org
Subject: Re: [PATCH] APEI/ERST: Fix error message formatting

On Wed, 2013-07-24 at 22:43 +0530, Naveen N. Rao wrote:
> On 2013/07/22 11:01PM, Borislav Petkov wrote:
> > From: Borislav Petkov <bp@...e.de>
> > 
> > [    5.525861] ERST: Can not request iomem region <0x        c7eff000-0x        c7f00000> for ERST.
> > 
> > This needs to have leading zeroes. Make it so.

Why does it need leading zeros?

> While looking at this, I noticed that we seem to be using varying field
> widths in our APEI code:
> - einj.c has two instances using %#010llx.
> - apei-base.c uses widths of 10 (4 bytes) and 6 (2 bytes).
> 
> Not sure if these are intentional and those fields truly aren't 64-bit
> (as suggested by the usage of long long int).

I suggest using "0x%llx" everywhere unless there's a
compelling reason like columnar alignment for them.


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