On Fri, 07 Dec 2007 19:45:25 +0100
Rene Herman <rene.herman@xxxxxxxxxxxx> wrote:
On 07-12-07 18:19, Alan Cox wrote:
On Fri, 7 Dec 2007 17:31:16 +0100Isn't 8 generally a bit overly long? I believe the norm is 1?
Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:
Pick a sane worst case and go with it at boot. We don't have to beYou don't need to. Port 0x80 historically is about 8uS so just udelay(8)How would you make it conservative enough handling let's say a 6Ghz CPU
and make sure the initial default delay is conservative enough before the
that can execute multiple jumps per cycle?
accurate before we tune udelay - over long in uSecs isnt going to hurt,
and most post boot _p's can be replaced by udelay(8) now
8uS is an ISA bus transaction.