Re: [Xen-devel] [PATCH 2/2] x86/microcode: enable boot time (pre-Dom0) loading

[Konrad Rzeszutek Wilk <konrad@xxxxxxxxxx>]

On Thu, Dec 01, 2011 at 11:38:08AM +0100, Borislav Petkov wrote:
> On Thu, Dec 01, 2011 at 10:02:10AM +0000, Jan Beulich wrote:
> > >>> On 01.12.11 at 10:55, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> > > On Thu, 2011-12-01 at 08:04 +0000, Jan Beulich wrote:
> > >> 
> > >> > I got the impression they wanted some new .pack format or so?
> > >> > Or is the format that they were talking about exactly what you
> > >> picked?
> > >> 
> > >> I merely picked the binary formats that are already in use; I see no
> > >> reason to invent another one. 
> > > 
> > > Adding a header/magic number so you can detect which of the blobs is
> > > microcode?
> > 
> > This is precisely what I did *not* want to do.
> 
> Well, AFAICR, we talked about using the setup_data linked list in
> the user-mode kernel header and since parse_setup_data() looks at
> data->type, then probably something should state the type of the ucode
> image, but I'm not sure on the details.
> 
> FWIW, hpa mentioned at KS he already has some code doing early ucode
> loading so I'll let him chime in here. He's away this week though so it
> could take a while.

ping?

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