Re: [Xen-devel] [PATCH v7] x86/altp2m: Added xc_altp2m_set_mem_access_multi()

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

On 10/20/2017 07:15 PM, Wei Liu wrote:
> On Mon, Oct 16, 2017 at 08:07:41PM +0300, Petre Pircalabu wrote:
>> From: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
>>
>> For the default EPT view we have xc_set_mem_access_multi(), which
>> is able to set an array of pages to an array of access rights with
>> a single hypercall. However, this functionality was lacking for the
>> altp2m subsystem, which could only set page restrictions for one
>> page at a time. This patch addresses the gap.
>>
>> HVMOP_altp2m_set_mem_access_multi has been added as a HVMOP (as opposed to a
>> DOMCTL) for consistency with its HVMOP_altp2m_set_mem_access counterpart (and
>> hence with the original altp2m design, where domains are allowed - with the
>> proper altp2m access rights - to alter these settings), in the absence of an
>> official position on the issue from the original altp2m designers.
>>
>> Signed-off-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
>> Signed-off-by: Petre Pircalabu <ppircalabu@xxxxxxxxxxxxxxx>
>>
> 
> The title is a bit misleading -- this patch actually contains changes to
> hypervisor as well.

Sorry, I have assumed that the hypervisor changes are implied. We're
happy to change it. Would "x86/altp2m: Added
xc_altp2m_set_mem_access_multi() and hypervisor support" be better?


Thanks,
Razvan

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