linux-kernel - Re: [PATCH] x86: 46 bit PAE support

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Message-ID: <20090507120103.GA1497@ucw.cz>
Date:	Thu, 7 May 2009 14:01:30 +0200
From:	Pavel Machek <pavel@....cz>
To:	Rik van Riel <riel@...hat.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-mm@...ck.org, mingo@...hat.com, akpm@...ux-foundation.org
Subject: Re: [PATCH] x86: 46 bit PAE support

On Wed 2009-05-06 08:20:59, Rik van Riel wrote:
> H. Peter Anvin wrote:
>> Rik van Riel wrote:
>>> Testing: booted it on an x86-64 system with 6GB RAM.  Did you really think
>>> I had access to a system with 64TB of RAM? :)
>>
>> No, but it would be good if we could test it under Qemu or KVM with an
>> appropriately set up sparse memory map.
>
> I don't have a system with 1TB either, which is how much space
> the memmap[] would take...

Do we really have 1 byte overhead per 64 bytes of RAM?
								Pavel
-- 
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