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Re: [Xen-devel] Linux 3.11 and the future...

On Fri, Jun 07, 2013 at 04:43:52PM +0100, Jan Beulich wrote:
> >>> On 07.06.13 at 15:58, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> 
> >>> wrote:
> > On Thu, Jun 06, 2013 at 02:14:45PM +0100, Jan Beulich wrote:
> >> Imo this is not a viable option - we shouldn't start peeking into the
> >> second module (which Linux uses as initrd, but which other OSes
> >> may use for other purposes) - so far this is just a binary blob to the
> >> hypervisor.
> >> 
> > 
> > I was under the impression that the code you introduced for microcode 
> > loading
> > was doing that exactly. Granted it would only peek if told to. Perhaps that
> > code can be expanded to scan the blob for cpio image of microcode in 
> > whatever it was told to look at?
> No, this is a separate (usually third) grub module, containing just
> the raw microcode data (in the same format that otherwise would
> get passed down from Dom0 via hypercall).

Correct. What I was thinking would be beneficial is extend the code
such that if the user wishes - it could scan one of the grub modules
for a signature and if so, extract the relevant microcode from the
cpio image. Then apply it.

> Jan

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