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Re: [PATCH v11 05/17] vpci: add hooks for PCI device assign/de-assign
- To: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 22 Dec 2023 09:52:24 +0100
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- Cc: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>, Oleksandr Andrushchenko <Oleksandr_Andrushchenko@xxxxxxxx>, Paul Durrant <paul@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Fri, 22 Dec 2023 08:52:32 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 02.12.2023 02:27, Volodymyr Babchuk wrote:
> @@ -886,6 +890,10 @@ static int deassign_device(struct domain *d, uint16_t
> seg, uint8_t bus,
>
> pdev->fault.count = 0;
>
> + write_lock(&target->pci_lock);
> + ret = vpci_assign_device(pdev);
> + write_unlock(&target->pci_lock);
> +
> out:
> if ( ret )
> printk(XENLOG_G_ERR "%pd: deassign (%pp) failed (%d)\n",
Considering the function we're in, I think this "assign" deserves a comment.
It's necessary for hwdom only aiui, i.e. particularly not for the more
typical case of putting the device in quarantine?
Jan
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