From: Paul Jackson <pj@sgi.com>
To: "Yinghai Lu" <yhlu.kernel@gmail.com>
Cc: ying.huang@intel.com, hpa@zytor.com, andi@firstfloor.org,
mingo@redhat.com, tglx@linutronix.de,
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 08:36:13 -0500 [thread overview]
Message-ID: <20080328083613.f058172f.pj@sgi.com> (raw)
In-Reply-To: <86802c440803272233ved9c1d6w44f8722c85cf4c62@mail.gmail.com>
YH wrote:
> interesting, that 512nodes/4096 box physics memory is not continuous?
If each node board is stuffed with the same amount of RAM,
and that amount of RAM is a power of two size, then you
are correct that it would be continuous.
But if the nodes are stuffed with unequal amounts of RAM,
or if its not a power of two, then, because we are doing
what Andi figures (breaking the addr into bit fields, for
efficient implementation) then we can end up with many holes.
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.940.382.4214
next prev parent reply other threads:[~2008-03-28 13:36 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
2008-03-28 13:36 ` Paul Jackson [this message]
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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