Re: [Xen-devel] mmio_decode()

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 21/11/06 12:42, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

> Could anyone enlighten me why this function decodes arbitrary opcodes?
> I.e. 0x20...0x23 are all getting decoded, but only 0x00 (and not
> 0x01...0x03) and only 0x2B (and not 0x2A). I guess this is based on
> observed instructions used for mmio, but - this doesn't make sense! That
> way, we'll never get to a point where arbitrary OSes (or other
> environments) can get emulated.

Opcodes get faulted in as needed. Pretty stupid I agree.

 -- Keir


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