Re: [Xen-devel] [PATCH] non-flat protected mode HVM support

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 29/11/06 15:19, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

> Indeed, I didn't look outside the hvm directories. But it's not just the
> instruction
> fetching there, there are other segment based operations in there, too. Hence
> I think adding a callback to obtain the base address would be cleaner;
> hvm_get_segment_base() could be used in the hvm case, and a simple function
> should be put in place for pv guest handling (for those, assuming a zero base
> address seems reasonably safe at this point, since the behavior of them is
> known, and if ever page table updates get done through segments with non-
> zero base addresses this would need to be revisited.
> 
> I'll try to take care of this unless you beat me.

I have a big patch outstanding on the x86_emulate code to simplify the
interface and properly support page-straddling data operands and non-zero
segment bases.

 -- Keir


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