Re: [Xen-devel] [RFC][PATCH][1/4] Intel(R) Trusted Execution Technology support: xen

Keir Fraser
Thu, 30 Aug 2007 17:59:30 -0000

On 30/8/07 17:17, "Cihula, Joseph" <joseph.cihula@intel.com>
wrote:

>>> Changes to Xen for Intel(R
<<txt-xen-0828_01-xen.patch>> ) TXT
>>> support.
>>
>> Is there any documentation for the processor changes for TXT support
>> (e.g., the additions to IA32_FEATURE_CONTROL_MSR, among others)?
> Googling
>> for TXT is not very helpful. :-)

Okay, current situation on the Xen path is that it''s all checked in
except:
 * the changes to shutdown.c and smp.c
 * the bits that actually interface with sboot (that''s most of the bits
inside CONFIG_TXT).

For the former, I''d like it to be a separate cleanup patch, with some
explanation of why it''s required. For example, whay is the code
movement in
smp.c required at all?

For the latter, I would like Xen to have its own asm-x86/sboot.h, even
though this causes a small amount of code duplication outside of th esboot
module itself. It is supposed to become a stable interface after all. The
bit syou need from uuid.h can also be included in Xen''s sboot.h. All
the
names you create in Xen''s sboot.h should have a suitable common prefix
on
them. I guess mle_ might do the trick, although I don''t actually know
what
MLE stands for?!

That''s all for now. The sboot module itself is scary big. :-/

Oh, you can find the current tip to re-merge against at