Re: kernel/microcode.c error from new 64bit code

[Pavel Machek]

Hi!

> > On Sat, 21 Feb 2004, Pavel Machek wrote:
> > >
> > > I'm just afraid that someone will mail you a patch replacing that with
> > > >> 32 and you'll overlook it.
> > 
> > Well, the good news is that ">> 32" should cause gcc to complain with a 
> > big warning (exactly because it's undefined brhaviour on a 32-bit 
> > architecture), so I don't think it's easy to overlook.
> 
> What is wrong with the original?
> 
> -       wrmsr(MSR_IA32_UCODE_WRITE, (unsigned int)(uci->mc->bits), 0);
> 
> I don't see how anything else could be correct.
> 
> Either we have high bits we need to worry about in 32bit mode, in which
> case the 32bit variant is wrong.  Or we don't have high bits to worry
> about in which case attempting to set them is wrong.

I believe that driver is now shared between i386 and x86-64.

								Pavel
-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
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