Re: [PATCH v5 2/3] virDomainVirtioSerialAddrAssign: Fix virtio console port auto assignment on vioserial bus

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On Thu, Jun 05, 2025 at 20:09:23 -0400, Aaron M. Brown wrote:
> This change fixes an issue with virtio console port assignment on vioserial buses.
> Currently, when trying to autoassign a virtio console device, the device cannot be
> assigned to a port greater than 0 on vioserial buses.
> You will receive the following error:
> 
> `virtio-serial-bus: A port already exists at id 0`
> 
> Therefore, the data needs to be passed back into info when allowZero is true
> 
> Fixes: 16db8d2ec540 ("Add functions to track virtio-serial addresses")
> Reviewed-by: Boris Fiuczynski <fiuczy@xxxxxxxxxxxxx>
> Signed-off-by: Aaron M. Brown <aaronmbr@xxxxxxxxxxxxx>
> ---
>  src/conf/domain_addr.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
> index 8dfa8feca0..76e11c0dde 100644
> --- a/src/conf/domain_addr.c
> +++ b/src/conf/domain_addr.c
> @@ -1737,6 +1737,13 @@ virDomainVirtioSerialAddrAssign(virDomainDef *def,
>          if (virDomainVirtioSerialAddrNextFromController(addrs,
>                                                          &ptr->addr.vioserial) < 0)
>              return -1;
> +
> +        if (ptr == &nfo) {
> +            /* pass the vioserial data back into info as info is used
> +             * later for port assignment */
> +            info->addr.vioserial = ptr->addr.vioserial;
> +        }
> +
>      } else {
>          if (virDomainVirtioSerialAddrNext(def, addrs, &ptr->addr.vioserial,
>                                            allowZero) < 0)

This looks good to me, but will require the appropriate hunks to make
the tests pass.



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