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Re: [Xen-devel] [PATCH V2 1/2] x86/altp2m: Add hypercall to set a range of sve bits
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>
- Date: Wed, 20 Nov 2019 08:29:47 +0000
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- Delivery-date: Wed, 20 Nov 2019 08:30:03 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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- Thread-topic: [Xen-devel] [PATCH V2 1/2] x86/altp2m: Add hypercall to set a range of sve bits
On 19.11.2019 11:23, Jan Beulich wrote:
> On 19.11.2019 10:05, Alexandru Stefan ISAILA wrote:
>> On 18.11.2019 16:09, Jan Beulich wrote:
>>> On 18.11.2019 14:39, Alexandru Stefan ISAILA wrote:
>>>> For this HVMOP_ALTP2M_INTERFACE_VERSION shout be increased. I will leave
>>>> it to Tamas to decide if we will need a different structure for
>>>> xen_hvm_altp2m_suppress_ve_multi to keep the compatibility.
>>>
>>> Wasn't is that due to the possible guest exposure it was decided
>>> that the interface version approach was not suitable here, and hence
>>> it shouldn't be bumped any further?
>>>
>>
>> That is correct but there was also requested to add the new opaque field
>> so I don't know how to have that an still keep the same version.
>
> New sub-op?
>
Wouldn't it be simpler to have a new structure to use for this,
something like "struct xen_hvm_altp2m_suppress_ve_multi" and then the
version will be unchanged
Alex
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