hmmm, ok, if someone wants to try the microcode idea - I will put the
latest Intel Microcode chunk (as a maintainer of P6 microcode update
driver for Linux I receive updates from Intel directly) on the web and
let you guys know.
(sorry, I need to write a simple userspace proggie first before I can
release the actual stuff - I delayed it for so long because I was too
busy with other stuff :)
Should be ready soon.
Regards,
Tigran
On Mon, 24 Apr 2000, Oliver Xymoron wrote:
> On Mon, 24 Apr 2000, Linus Torvalds wrote:
>
> > On Mon, 24 Apr 2000, Rogier Wolff wrote:
> > >
> > > And as, nowadays it is possible to upgrade the CPU in-circuit, even
> > > under Linux, wouldn't it be an idea to just require the microcode
> > > upgrade? This is EXACTLY what the microcode upgrade is for.
> >
> > This is not going to be microcode-upgradeable, I bet. Sure, certain
> > companies I could mention can change everything they do with a microcode
> > update, but on normal CPU's the kind of ordering issue between simple
> > operations is probably not fixable with a software upgrade (well, maybe
> > the cache replacement policy might be updated or something, but we're
> > talking simple operations like "mov to memory" here which are definitely
> > not handled by microcode.)
>
> The mov itself wouldn't be in microcode, as it surely maps to one uop, but
> most the instruction scheduler probably is (since it's probably
> table-driven). And its either the scheduling or the cache management
> protocol that'd have to be iffy to result in a problem.
>
> --
> "Love the dolphins," she advised him. "Write by W.A.S.T.E.."
>
>
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