From: Andi Kleen <ak@muc.de>
To: YhLu <YhLu@tyan.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: X86_64 kernel support MAX memory.
Date: 15 Feb 2005 13:08:00 +0100
Date: Tue, 15 Feb 2005 13:08:00 +0100 [thread overview]
Message-ID: <20050215120800.GA25815@muc.de> (raw)
In-Reply-To: <3174569B9743D511922F00A0C943142308085800@TYANWEB>
On Mon, Feb 14, 2005 at 07:32:42PM -0800, YhLu wrote:
> Andi,
>
> How much is max RAM 2.6.11 x86_64 support on AMD64?
> 64G or 128G?
46bits in theory (64TB), however current CPUs only support
upto 40bits (AMD) or 36bits (Intel). There is some other
code that is also limited to 40bits right now like AGP
or IOMMU or MTRR, that is all due to hardware limitations.
-Andi
next prev parent reply other threads:[~2005-02-15 12:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-15 3:32 X86_64 kernel support MAX memory YhLu
2005-02-15 12:08 ` Andi Kleen [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-02-15 18:49 YhLu
2005-02-15 20:14 ` Andi Kleen
2005-02-15 22:34 YhLu
2005-02-15 22:42 ` Andi Kleen
2005-02-15 22:57 YhLu
2005-02-15 22:55 ` Andi Kleen
2005-02-15 23:32 YhLu
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