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Re: [Xen-devel] [PATCH 6/6] xen/public: Obsolete HVM_PARAM_PAE_ENABLED
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Thu, 6 Feb 2020 12:25:58 +0000
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Wei Liu <wl@xxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Thu, 06 Feb 2020 12:26:13 +0000
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On 06/02/2020 11:37, Jan Beulich wrote:
> On 06.02.2020 12:32, Andrew Cooper wrote:
>> On 06/02/2020 09:28, Jan Beulich wrote:
>>> On 05.02.2020 17:50, Andrew Cooper wrote:
>>>> --- a/xen/include/public/hvm/params.h
>>>> +++ b/xen/include/public/hvm/params.h
>>>> @@ -86,7 +86,7 @@
>>>> #define HVM_PARAM_STORE_PFN 1
>>>> #define HVM_PARAM_STORE_EVTCHN 2
>>>>
>>>> -#define HVM_PARAM_PAE_ENABLED 4
>>>> +#define HVM_PARAM_PAE_ENABLED 4 /* Obsolete. Do not use. */
>>> I think this should be moved up in the deprecated section.
>> There isn't a deprecated section.
>>
>> The params are currently sorted numerically. Playing "which param is
>> this integer?" with an unsorted params.h is an experience I wish never
>> to repeat again.
> You'll find
>
> /* These parameters are deprecated and their meaning is undefined. */
>
> near the top of the file.
Urgh - I was looking at the 4.5 code.
What's currently in stating is a total mess, and we've got multiple
different ways of dealing with reserved values.
~Andrew
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