From: William Lee Irwin III <wli@holomorphy.com>
To: Jirka Kosina <jikos@jikos.cz>
Cc: Brian Gerst <bgerst@didntduck.org>,
devnull@adc.idt.com, linux-kernel@vger.kernel.org
Subject: Re: >3G Memory support
Date: Thu, 20 Jun 2002 08:27:00 -0700 [thread overview]
Message-ID: <20020620152700.GU22961@holomorphy.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0206201647090.22725-100000@twin.jikos.cz>
On Thu, 20 Jun 2002, Brian Gerst wrote:
>> Hardware limitations imposed by the x86 architecture. The x86 only has
>> _one_ virtual address space, which has to be shared by user space and
>> kernel space. It is not possible to give user space more virtual
>> address space without taking it away from the kernel.
On Thu, Jun 20, 2002 at 04:50:26PM +0200, Jirka Kosina wrote:
> You can theoretically run kernel in one task (I mean "task" in the
> Intel-processor-meaning of the word ;) ) and userspace programs in another
> task, which will result in having 4GB of memory for both of them, won't
> it?
This is what BIGMEM did. It predated the current highmem implementation.
Cheers,
Bill
next prev parent reply other threads:[~2002-06-20 15:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-19 22:30 >3G Memory support devnull
2002-06-20 3:29 ` Brian Gerst
2002-06-20 14:18 ` devnull
2002-06-20 14:42 ` Brian Gerst
2002-06-20 14:50 ` Jirka Kosina
2002-06-20 15:27 ` William Lee Irwin III [this message]
2002-06-20 15:42 ` Richard B. Johnson
-- strict thread matches above, loose matches on Subject: below --
2002-06-20 2:01 marc.miller
2002-06-20 2:08 ` William Lee Irwin III
2002-06-20 4:38 ` Eric W. Biederman
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