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Re: [XEN PATCH 6/7] xen/x86: remove stale comment
- To: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 4 Dec 2023 17:40:58 +0100
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- Cc: sstabellini@xxxxxxxxxx, michal.orzel@xxxxxxx, xenia.ragiadakou@xxxxxxx, ayan.kumar.halder@xxxxxxx, consulting@xxxxxxxxxxx, bertrand.marquis@xxxxxxx, julien@xxxxxxx, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 04 Dec 2023 16:41:09 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 04.12.2023 17:26, Nicola Vetrini wrote:
> On 2023-12-01 17:57, Nicola Vetrini wrote:
>> On 2023-11-30 17:41, Jan Beulich wrote:
>>> On 29.11.2023 16:24, Nicola Vetrini wrote:
>>>> The comment referred to the declaration for do_mca, which
>>>> now is part of hypercall-defs.h, therefore the comment is stale.
>>>
>>> If the comments were stale, the #include-s should also be able to
>>> disappear?
>
>>>> --- a/xen/arch/x86/include/asm/hypercall.h
>>>> +++ b/xen/arch/x86/include/asm/hypercall.h
>>>> @@ -12,7 +12,7 @@
>>>> #include <xen/types.h>
>>>> #include <public/physdev.h>
>>>> #include <public/event_channel.h>
>>>> -#include <public/arch-x86/xen-mca.h> /* for do_mca */
>>>> +#include <public/arch-x86/xen-mca.h>
>>>> #include <asm/paging.h>
>>>
>>> Here otoh I'm not even sure this public header (or the others) is
>>> (are)
>>> really needed.
>>>
>>
>> I confirm this. It build even without this header.
>
> It does appear to be needed after all. I did two differential pipeline
> runs, and some jobs fail to compile when I remove the header (e.g.,
> [1]). Looking trough the build log, it's not entirely clear what is the
> relationship, but it seems related to some use of this struct defined in
> xen-mca.h:
>
> typedef struct xen_mc xen_mc_t;
> DEFINE_XEN_GUEST_HANDLE(xen_mc_t);
That do_mca()'s parameter type, so in a way the comment is still correct
then.
Jan
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