From: Jason Gunthorpe <jgg@ziepe.ca>
To: Alex Mastro <amastro@fb.com>
Cc: Alex Williamson <alex.williamson@redhat.com>,
peterx@redhat.com, kbusch@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] vfio/pci: print vfio-device name to fdinfo
Date: Tue, 24 Jun 2025 15:16:16 -0300 [thread overview]
Message-ID: <20250624181616.GE72557@ziepe.ca> (raw)
In-Reply-To: <20250624163559.2984626-1-amastro@fb.com>
On Tue, Jun 24, 2025 at 09:35:58AM -0700, Alex Mastro wrote:
> > The userspace can deduce more information, like the actual PCI BDF, by
> > mapping the name through sysfs.
>
> In the vfio cdev case, <pci sysfs path>/vfio-dev/X tells you the
> /dev/vfio/devices/X mapping, but is there a straightforward way to map in the
> opposite direction?
There will be a symlink under /sys/class/vfio-xx/XX pointing to the
<pci sysfs path>/vfio-dev/X directory
And another symlink under /sys/dev/char/XX:XX doing the same.
Jason
next prev parent reply other threads:[~2025-06-24 18:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-23 21:02 Alex Mastro
2025-06-23 21:50 ` Keith Busch
2025-06-23 22:18 ` Alex Williamson
2025-06-23 23:14 ` Alex Mastro
2025-06-24 0:56 ` Jason Gunthorpe
2025-06-24 16:23 ` Alex Williamson
2025-06-24 18:12 ` Jason Gunthorpe
2025-06-24 16:35 ` Alex Mastro
2025-06-24 18:16 ` Jason Gunthorpe [this message]
2025-06-24 18:53 ` Alex Mastro
2025-06-24 18:58 ` Jason Gunthorpe
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