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[Xen-devel] Re: [RFC PATCH 17/35] Segment register changes for Xen

* Andi Kleen (ak@xxxxxxx) wrote:
> On Wednesday 22 March 2006 07:30, Chris Wright wrote:
> > +#define get_kernel_cs() \
> > +   (__KERNEL_CS + (xen_feature(XENFEAT_supervisor_mode_kernel) ? 0 : 1))
> Under what circumstances is that feature set?

When building hypervisor with that support.  It then builds a different
hypercall_page for the guest to use, and both co-exist in ring0.  It's
for running directly on native.


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