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Date:   Thu, 29 Jul 2021 09:30:59 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Jason Gunthorpe <jgg@nvidia.com>
Cc:     David Airlie <airlied@linux.ie>,
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Subject: Re: [PATCH v3 09/14] vfio/pci: Change vfio_pci_try_bus_reset() to
 use the dev_set
Message-ID: <20210729073059.GE31896@lst.de>
References: <0-v3-6c9e19cc7d44+15613-vfio_reflck_jgg@nvidia.com> <9-v3-6c9e19cc7d44+15613-vfio_reflck_jgg@nvidia.com>
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> +/*
> + * vfio-core considers a group to be viable and will create a vfio_device even
> + * if some devices are bound to drivers like pci-stub or pcieport.  Here we
> + * require all PCI devices to be inside our dev_set since that ensures they stay
> + * put and that every driver controlling the device can co-ordinate with the
> + * device reset.
> + */
> +static struct pci_dev *vfio_pci_find_reset_target(struct vfio_pci_device *vdev)
> +{
> +	struct vfio_device_set *dev_set = vdev->vdev.dev_set;
> +	struct vfio_pci_device *cur;
> +	bool needs_reset = false;
> +
> +	/* No VFIO device has an open device FD */

s/has an/can have/ ?

Or maybe:

	/* No device in the set can have an open device FD */

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>