linux-kernel - Re: [patch] Fix BIOS-e820 end address

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Message-ID: <20070914213111.GA24882@askeshav-devel.jf.intel.com>
Date:	Fri, 14 Sep 2007 14:31:12 -0700
From:	"Keshavamurthy, Anil S" <anil.s.keshavamurthy@...el.com>
To:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	"Keshavamurthy, Anil S" <anil.s.keshavamurthy@...el.com>,
	akpm@...l.org, Linux Kernel <linux-kernel@...r.kernel.org>,
	ak@...e.com
Subject: Re: [patch] Fix BIOS-e820 end address

On Fri, Sep 14, 2007 at 02:31:59PM -0700, Siddha, Suresh B wrote:
> On Fri, Sep 14, 2007 at 02:00:02PM -0700, Jeremy Fitzhardinge wrote:
> > Keshavamurthy, Anil S wrote:
> > > Subject: [patch] Fix BIOS-e820 end address
> > >
> > > --snip of boot message--
> > > BIOS-provided physical RAM map:
> > >  BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
> > >  BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
> > >  BIOS-e820: 0000000000100000 - 000000007fe8cc00 (usable)
> > > ----end snip---
> > >
> > > As you see from above the address 0000000000100000 is both
> > > shown as reserved and usable which is confusing.
> > >   
> > 
> > I think this is consistent with many other kernel interfaces (such as
> > /proc/X/maps) where the end address is taken to be exclusive: [0xf0000,
> > 0x100000).
> 
> Andrew, Please disregard this patch. As Jermy, Jan pointed out, this
> will cause more confusions. Thanks. 
I agree, we can discard my patch.

-Anil
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