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Re: [PATCH v2 20/35] xen/console: introduce console_owner_domid()
- To: Jason Andryuk <jason.andryuk@xxxxxxx>, dmukhin@xxxxxxxx
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 11 Dec 2024 08:33:53 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 11 Dec 2024 07:34:09 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 10.12.2024 23:11, Jason Andryuk wrote:
> On 2024-12-05 23:41, Denis Mukhin via B4 Relay wrote:
>> From: Denis Mukhin <dmukhin@xxxxxxxx>
>>
>> console_owner_domid() is introduced to obtain the "console owner" domain ID.
>>
>> The call is used in NS8250 emulator to identify the case when physical xen
>> console focus is owned by the domain w/ NS8250 emulator, in which case,
>> messages from guest OS are formatted w/o '(XEN)' prefix.
>>
>> Signed-off-by: Denis Mukhin <dmukhin@xxxxxxxx>
>
> Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
>
> I expected this to be used immediately by patch 21, but it is not. You
> might want to re-order it directly before its first use is introduced.
> I haven't gotten far enough to know when that is.
Plus, no matter how far in the future it is, there'll be a window where the
Misra rule of not having unreachable code in the project is violated. New
functions now really need introducing when their first caller appears.
Jan
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