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From: Andi Kleen <andi@firstfloor.org>
To: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: "Huang, Ying" <ying.huang@intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	andi@firstfloor.org, mingo@redhat.com, tglx@linutronix.de,
	Paul Jackson <pj@sgi.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/4] x86_64 boot -v2: Add linked listof struct setup_data to boot protocol
Date: Fri, 28 Mar 2008 07:31:42 +0100	[thread overview]
Message-ID: <20080328063142.GN29105@one.firstfloor.org> (raw)
In-Reply-To: <86802c440803272233ved9c1d6w44f8722c85cf4c62@mail.gmail.com>

On Thu, Mar 27, 2008 at 10:33:27PM -0700, Yinghai Lu wrote:
> On Thu, Mar 27, 2008 at 7:49 PM, Huang, Ying <ying.huang@intel.com> wrote:
> > This patchset adds the linked list of struct setup_data to boot
> >  protocol. This is needed by EDD information and some SGI machine with
> >  E820 entry number > 128.
> 
> interesting, that 512nodes/4096 box physics memory is not continuous?

Likely not. That would require huge hardware overhead for all the
comparators to handle variable ranges.  Much easier to just use some higher bits 
in the address to index nodes.

-Andi

  reply	other threads:[~2008-03-28  6:28 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-28  2:49 [PATCH 0/4] x86_64 boot -v2: Add linked listof struct setup_data to boot protocol Huang, Ying
2008-03-28  5:33 ` Yinghai Lu
2008-03-28  6:31   ` Andi Kleen [this message]
2008-03-28 13:36   ` Paul Jackson
2008-03-28 13:44     ` Andi Kleen
2008-03-28 15:43       ` Paul Jackson
2008-03-28  8:50 ` Ingo Molnar

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