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xen-devel
[Xen-devel] Re: [patch 3/8] Allow a kernel to not be in ring 0.
Chuck Ebbert wrote:
In-Reply-To: <20060803002518.190834642@xxxxxxxxxxxxx>
On Wed, 02 Aug 2006 17:25:13 -0700, Jeremy Fitzhardinge wrote:
We allow for the fact that the guest kernel may not run in ring 0.
This requires some abstraction in a few places when setting %cs or
checking privilege level (user vs kernel).
I made some changes:
a. Added some comments about the SEGMENT_IS_*_CODE() macros.
b. Added a USER_RPL macro. (You were comparing a value to a mask
in some places and to the magic number 3 in other places.)
c. Changed the entry.S tests for LDT stack segment to use the macros.
These changes look great. Ack-ed. I had some similar ones before that
never made it from my tree, as I got carried away and tried to unify the
user descriptor conversion functions... someday I'll get to it again.
Zach
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