Re: [Xen-devel] [PATCH v2 12/12] x86/altp2m: XSM hooks for altp2m HVM ops

[Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>]

On 06/22/2015 02:56 PM, Ed White wrote:
> From: Ravi Sahita <ravi.sahita@xxxxxxxxx>
>
> Signed-off-by: Ravi Sahita <ravi.sahita@xxxxxxxxx>
One comment, below.

[...]
> diff --git a/tools/flask/policy/policy/modules/xen/xen.if 
> b/tools/flask/policy/policy/modules/xen/xen.if
> index f4cde11..c95109f 100644
> --- a/tools/flask/policy/policy/modules/xen/xen.if
> +++ b/tools/flask/policy/policy/modules/xen/xen.if
> @@ -8,7 +8,7 @@
>   define(`declare_domain_common', `
>         allow $1 $2:grant { query setup };
>         allow $1 $2:mmu { adjust physmap map_read map_write stat pinpage 
> updatemp mmuext_op };
> -       allow $1 $2:hvm { getparam setparam };
> +       allow $1 $2:hvm { getparam setparam altp2mhvm altp2mhvm_op };
>         allow $1 $2:domain2 get_vnumainfo;
>   ')
This allows any domain to enable altp2m on itself; I think you meant to
only allow altp2mhvm_op here, requiring a privileged domain to first
enable the feature on a domain before anyone can use it.

Otherwise, this looks good, although if patch #10 is changed to expose
a single subop, the altp2mhvm_op XSM checks will need to be relocated.

--
Daniel De Graaf
National Security Agency

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