[Xen-devel] Re: [RFC, PATCH 10/24] i386 Vmi descriptor changes

[Chris Wright <chrisw@xxxxxxxxxxxx>]

* Zachary Amsden (zach@xxxxxxxxxx) wrote:
> Descriptor and trap table cleanups.  Add cleanly written accessors for
> IDT and GDT gates so the subarch may override them.  Note that this
> allows the hypervisor to transparently tweak the DPL of the descriptors
> as well as the RPL of segments in those descriptors, with no unnecessary
> kernel code modification.  It also allows the hypervisor implementation
> of the VMI to tweak the gates, allowing for custom exception frames or
> extra layers of indirection above the guest fault / IRQ handlers.

Nice cleanups, VMI or not.

thanks,
-chris

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