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Re: [PATCH v7 2/7] xen/arm: add pci-domain for disabled devices
- To: Oleksandr Andrushchenko <andr2000@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Julien Grall <julien@xxxxxxx>
- Date: Wed, 8 Dec 2021 17:24:13 +0000
- Cc: sstabellini@xxxxxxxxxx, oleksandr_tyshchenko@xxxxxxxx, volodymyr_babchuk@xxxxxxxx, Artem_Mygaiev@xxxxxxxx, roger.pau@xxxxxxxxxx, jbeulich@xxxxxxxx, andrew.cooper3@xxxxxxxxxx, george.dunlap@xxxxxxxxxx, paul@xxxxxxx, bertrand.marquis@xxxxxxx, rahul.singh@xxxxxxx, Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
- Delivery-date: Wed, 08 Dec 2021 17:24:25 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi Oleksandr,
On 24/11/2021 07:59, Oleksandr Andrushchenko wrote:
From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
If a PCI host bridge device is present in the device tree, but is
disabled, then its PCI host bridge driver was not instantiated.
This results in the failure of the pci_get_host_bridge_segment()
and the following panic during Xen start:
(XEN) Device tree generation failed (-22).
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) Could not set up DOM0 guest OS
(XEN) ****************************************
Fix this by adding "linux,pci-domain" property for all device tree nodes
which have "pci" device type, so we know which segments will be used by
the guest for which bridges.
Fixes: 4cfab4425d39 ("xen/arm: Add linux,pci-domain property for hwdom if not
available.")
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
Cheers,
--
Julien Grall
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