Re: [Xen-devel] [PATCH] 32on64 call gate support

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 26/1/07 9:38 am, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

> As was realized in the course of creating this patch, 64-bit gates don't work
> either, and will also need to be emulated if any environment intends to use
> them. The patch changes behavior here in that rather silently permitting the
> use of 64-bit gates (with possibly difficult to understand exceptions
> happening
> on the first instruction of the call/jump target) the call/jump itself will
> now fault,
> with the error code indicating the gate that was attempted to be used. I
> intend to complete the emulation to also cover 64-bit gates, but there is one
> issue that first needs to be addressed:

Do we know that anyone uses 64-bit call gates? I would have thought it
unlikely.

 -- Keir



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