linux-kernel - RE: [PATCH v2 25/26] drm/xe/pf: Export helpers for VFIO

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Message-ID: <BN9PR11MB52766B1A0B19758171772F2F8CFDA@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Tue, 28 Oct 2025 03:28:58 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: "Winiarski, Michal" <michal.winiarski@...el.com>, Alex Williamson
	<alex.williamson@...hat.com>, "De Marchi, Lucas" <lucas.demarchi@...el.com>,
	Thomas Hellström <thomas.hellstrom@...ux.intel.com>,
	"Vivi, Rodrigo" <rodrigo.vivi@...el.com>, Jason Gunthorpe <jgg@...pe.ca>,
	Yishai Hadas <yishaih@...dia.com>, "intel-xe@...ts.freedesktop.org"
	<intel-xe@...ts.freedesktop.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"Brost, Matthew" <matthew.brost@...el.com>, "Wajdeczko, Michal"
	<Michal.Wajdeczko@...el.com>
CC: "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>, "Jani
 Nikula" <jani.nikula@...ux.intel.com>, Joonas Lahtinen
	<joonas.lahtinen@...ux.intel.com>, Tvrtko Ursulin <tursulin@...ulin.net>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, "Laguna,
 Lukasz" <lukasz.laguna@...el.com>
Subject: RE: [PATCH v2 25/26] drm/xe/pf: Export helpers for VFIO

> From: Winiarski, Michal <michal.winiarski@...el.com>
> Sent: Wednesday, October 22, 2025 6:42 AM
> +
> +bool xe_sriov_vfio_migration_supported(struct pci_dev *pdev);
> +int xe_sriov_vfio_wait_flr_done(struct pci_dev *pdev, unsigned int vfid);
> +int xe_sriov_vfio_stop(struct pci_dev *pdev, unsigned int vfid);
> +int xe_sriov_vfio_run(struct pci_dev *pdev, unsigned int vfid);
> +int xe_sriov_vfio_stop_copy_enter(struct pci_dev *pdev, unsigned int vfid);
> +int xe_sriov_vfio_stop_copy_exit(struct pci_dev *pdev, unsigned int vfid);
> +int xe_sriov_vfio_resume_enter(struct pci_dev *pdev, unsigned int vfid);
> +int xe_sriov_vfio_resume_exit(struct pci_dev *pdev, unsigned int vfid);
> +int xe_sriov_vfio_error(struct pci_dev *pdev, unsigned int vfid);
> +ssize_t xe_sriov_vfio_data_read(struct pci_dev *pdev, unsigned int vfid,
> +				char __user *buf, size_t len);
> +ssize_t xe_sriov_vfio_data_write(struct pci_dev *pdev, unsigned int vfid,
> +				 const char __user *buf, size_t len);
> +ssize_t xe_sriov_vfio_stop_copy_size(struct pci_dev *pdev, unsigned int
> vfid);
> +

none of those helpers ties to any vfio specific logic. so there is no need
to have 'vfio' explicitly in those function names.