linux-kernel - Re: [PATCH] x86, efi: print debug values in Kib not MB

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Message-ID: <20140730144803.GB15082@console-pimps.org>
Date:	Wed, 30 Jul 2014 15:48:03 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Borislav Petkov <bp@...en8.de>
Cc:	Prarit Bhargava <prarit@...hat.com>, linux-kernel@...r.kernel.org,
	lszubowi@...hat.com, Matt Fleming <matt.fleming@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	linux-efi@...r.kernel.org,
	Colin Ian King <colin.king@...onical.com>
Subject: Re: [PATCH] x86, efi: print debug values in Kib not MB

On Wed, 30 Jul, at 12:29:32AM, Borislav Petkov wrote:
> On Tue, Jul 29, 2014 at 01:09:21PM -0400, Prarit Bhargava wrote:
> > The current debug print in EFI does
> > 
> > [    0.000000] efi: mem84: type=3, attr=0xf, range=[0x00000000645b5000-0x00000000645fb000) (0MB)
> > 
> > and rounds off the size to 0MB and isn't very useful.  We should print this in
> > Kib.  After applying this patch we get better info with
> > 
> > [    0.000000] efi: mem84: type=3, attr=0xf, range=[0x00000000645b5000-0x00000000645fb000) (280kiB)
> 
> Turning this into kiB unconditionally won't always work ok:
> 
> First of all, there might be something which parses that output so I'd
> make sure I'm not breaking that. Maybe fwts... Matt will know.

I'm not aware of anything that parses the dmesg output, but I'm
including Colin in case he has any insight.

-- 
Matt Fleming, Intel Open Source Technology Center
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