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Re: [PATCH v2] xen/console: introduce domain_console struct
- To: dmkhn@xxxxxxxxx
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 17 Jun 2025 11:52:54 +0200
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- Cc: andrew.cooper3@xxxxxxxxxx, anthony.perard@xxxxxxxxxx, julien@xxxxxxx, michal.orzel@xxxxxxx, roger.pau@xxxxxxxxxx, sstabellini@xxxxxxxxxx, teddy.astie@xxxxxxxxxx, dmukhin@xxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 17 Jun 2025 09:53:08 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 17.06.2025 11:48, Jan Beulich wrote:
> On 17.06.2025 03:27, dmkhn@xxxxxxxxx wrote:
>> From: Denis Mukhin <dmukhin@xxxxxxxx>
>>
>> Introduce domain_console for grouping data structures used for integrating
>> domain's diagnostic console with Xen's console driver.
>>
>> Group all pbuf-related data structures under domain_console. Rename the moved
>> fields to plain .buf, .idx and .lock names, since all uses of the fields are
>> touched.
>>
>> Bump the domain console buffer size to the closest power of 2 (256) and
>> rename the symbol to DOMAIN_CONSOLE_BUF_SIZE.
>>
>> Move d->console->buf management under CONFIG_VERBOSE_DEBUG when the
>> HYPERCALL_console_io handler is enabled.
>
> This, if at all, needs to be a separate change (with its own justification).
> I for one don't think VERBOSE_DEBUG is intended to control any kind of guest
> output.
Hmm, the option's help text indeed says it mixes two unrelated things. Maybe
this wants untangling. With a behavioral change like the one you suggest, that
help text would need updating in any event, though.
Jan
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