Re: [Xen-devel] [PATCH v2] vvmx: fix instruction decode segment limit check

[Tim Deegan <tim@xxxxxxx>]

At 08:48 +0100 on 25 Apr (1335343691), Jan Beulich wrote:
> - no limit check for 64-bit mode (and GS: is not special in any way)
> - limit check is needed in compatibility mode
> - canonical address check should instead be performed for 64-bit mode
> - the last accessed byte must be within limits, not the first byte past
>   the accessed range
> - segment base address should be ignored for 64-bit mode unless FS: or
>   GS: is in use
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Much clearer, thanks.

Acked-by: Tim Deegan <tim@xxxxxxx>


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