On 15-12-07 09:08, Paul Rolland wrote:
Hello,
On Fri, 14 Dec 2007 23:29:55 +0000
Alan Cox <[email protected]> wrote:
On Fri, 14 Dec 2007 14:13:46 -0800
"H. Peter Anvin" <[email protected]> wrote:
Pavel Machek wrote:
On Fri 2007-12-14 10:02:57, H. Peter Anvin wrote:
How long will that take to boot on a 386?
Well the dumb approach to fix that would seem to be to initialise it to
cpu->family 3 -> 50MHz 4 -> 300Mhz 5-> etc...
Just an idea : from what I've read, the problem (port 80 hanging) only occurs
on 'modern' machines... So why not :
- use port 80 for old CPUs (PII, PIII) where it has never really been
a problem,
- use the cpu->family to do a best match for CPU freq
thus we could avoid increasing boot time too much...
Yes, just posted a Patch-For-Comments that switches on the availability of a
TSC (tsc_init sets tsc_disable also for !cpu_has_tsc) which would mean that
only really old stuff would be using the outb still. A TSC is really all we
need to have a sensible udelay().
Rene.
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