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Re: [PATCH v6 4/7] xen/arm: configure dom0less domain for enabling xenstore after boot
- To: Stefano Stabellini <sstabellini@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 5 May 2022 09:26:05 +0200
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- Cc: jgross@xxxxxxxx, Bertrand.Marquis@xxxxxxx, julien@xxxxxxx, Volodymyr_Babchuk@xxxxxxxx, Luca Miccio <lucmiccio@xxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 05 May 2022 07:26:21 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 05.05.2022 02:16, Stefano Stabellini wrote:
> From: Luca Miccio <lucmiccio@xxxxxxxxx>
>
> Export evtchn_alloc_unbound and make it __must_check.
>
> If "xen,enhanced" is enabled, then add to dom0less domains:
>
> - the hypervisor node in device tree
> - the xenstore event channel
>
> The xenstore event channel is also used for the first notification to
> let the guest know that xenstore has become available.
>
> Signed-off-by: Luca Miccio <lucmiccio@xxxxxxxxx>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
> Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
> CC: Julien Grall <julien@xxxxxxx>
> CC: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
> CC: Bertrand Marquis <bertrand.marquis@xxxxxxx>
> CC: jbeulich@xxxxxxxx
Somehow my ack given for v5 was lost?
> ---
> Changes in v5:
> - merge with "xen: export evtchn_alloc_unbound"
> - __must_check
>
> Changes in v3:
> - use evtchn_alloc_unbound
>
> Changes in v2:
> - set HVM_PARAM_STORE_PFN to ~0ULL at domain creation
> - in alloc_xenstore_evtchn do not call _evtchn_alloc_unbound
>
> xen: export evtchn_alloc_unbound
>
> It will be used during dom0less domains construction.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
This is somewhat confusing to find in a post-commit-message remark.
Jan
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