Re: [Xen-devel] [PATCH 01/18] arm/altp2m: Add cmd-line support for altp2m on ARM.

[Sergej Proskurin <proskurin@xxxxxxxxxxxxx>]

On 07/04/2016 07:56 PM, Tamas K Lengyel wrote:
> On Mon, Jul 4, 2016 at 11:42 AM, Julien Grall <julien.grall@xxxxxxx> wrote:
>>
>>
>> On 04/07/16 12:45, Sergej Proskurin wrote:
>>>
>>> The Xen altp2m subsystem is currently supported only on x86-64 based
>>> architectures. By utilizing ARM's virtualization extensions, we intend
>>> to implement altp2m support for ARM architectures and thus further
>>> extend current Virtual Machine Introspection (VMI) capabilities on ARM.
>>>
>>> With this commit, Xen is now able to activate altp2m support on ARM by
>>> means of the command-line argument 'altp2m' (bool).
>>
>>
>> Thinking a bit more about this patch. Why do we need an option to enable
>> altp2m? All the code could be gated by the value of HVM_PARAM_ALTP2M.
>>
> 
> I think the reasoning for having the altp2m boot parameter when it was
> introduced for x86 was that altp2m is considered experimental. IMHO it
> is stable enough so that we can forgo the boot param altogether.
> 
> Tamas
> 

That would definitely remove the need for the altp2m initcall mechanism.

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