Re: [PATCH] Intel x86-64 support merge

From: Bill Davidsen
Date: Thu Feb 19 2004 - 17:07:07 EST


David Mosberger-Tang wrote:
On Thu, 19 Feb 2004 00:40:24 +0100, Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> said:


Arjan> On Wed, 2004-02-18 at 23:57, H. Peter Anvin wrote:
>> Because they were caught by surprise and just hacked the chips
>> they had in the pipeline, presumably.

Arjan> fair enough; I hope this means the next generation has this
Arjan> wart fixed...

I wouldn't hold my breath. My impression was that the Intel chipset
folks don't want I/O MMU because (a) Windows doesn't need it and (b)
real machines use (close-to-)64-bit-capable hardware.

Doesn't need it? Does that mean the Win64 uses bounce buffers for everything? Or am I totally misreading this?
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