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Re: [PATCH v8 11/13] vpci: add initial support for virtual PCI bus topology
- To: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Fri, 21 Jul 2023 15:53:31 +0200
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Oleksandr Andrushchenko <Oleksandr_Andrushchenko@xxxxxxxx>
- Delivery-date: Fri, 21 Jul 2023 13:54:12 +0000
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On Thu, Jul 20, 2023 at 12:32:33AM +0000, Volodymyr Babchuk wrote:
> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
> diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
> index 80dd150bbf..478bd21f3e 100644
> --- a/xen/include/xen/sched.h
> +++ b/xen/include/xen/sched.h
> @@ -461,6 +461,14 @@ struct domain
> #ifdef CONFIG_HAS_PCI
> struct list_head pdev_list;
> rwlock_t pci_lock;
> +#ifdef CONFIG_HAS_VPCI_GUEST_SUPPORT
> + /*
> + * The bitmap which shows which device numbers are already used by the
> + * virtual PCI bus topology and is used to assign a unique SBDF to the
> + * next passed through virtual PCI device.
> + */
> + DECLARE_BITMAP(vpci_dev_assigned_map, VPCI_MAX_VIRT_DEV);
> +#endif
I think it would be helpful to state that vpci_dev_assigned_map is
protected by pci_lock (as I understand it's the intention).
Thanks, Roger.
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