Christer Weinigel wrote:
On Wed, 09 Jan 2008 10:18:11 -0800
"H. Peter Anvin" <[EMAIL PROTECTED]> wrote:
Zachary Amsden wrote:
I'm speaking specifically in terms of 64-bit platforms here.
Shouldn't we unconditionally drop outb_p doing extra port I/O on
64-bit architectures? Especially considering they don't even have
an ISA bus where the decode timing could even matter?
Why should the bitsize of the CPU matter for this? It seems one of
the less meaningful keys for this.
Well, anything that runs x86_64 should be a fairly modern system.
Yes, but you hardly want a situation where the machine works booting a
32-bit kernel and not a 64-bit kernel, or vice versa.
Furthermore, it's not so much about "modern" versus "old", it is about
picking a certain set of bugs.
-hpa
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