From: sashiko-bot@kernel.org
To: "Alex Williamson" <alex.williamson@nvidia.com>
Cc: kvm@vger.kernel.org, linux-pci@vger.kernel.org
Subject: Re: [RFC PATCH 2/5] PCI: Add pci_reset_bus_cond() for a caller-gated slot or bus reset
Date: Wed, 12 Aug 2026 05:00:55 +0000 [thread overview]
Message-ID: <20260812050056.3CE6C1F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260812045325.2733631-3-alex.williamson@nvidia.com>
> pci_reset_bus() locks every device affected by a slot or bus reset,
> performs the reset, and unlocks the devices, all internally. A caller
> has no way to evaluate what the reset would actually touch.
>
> Add pci_reset_bus_cond(), which takes a callback invoked on each
> affected device once they are all locked. A nonzero return value from
> the callback aborts the reset and the value is returned to the caller.
> This allows, for instance, the caller to validate that SR-IOV is not
> enabled on any affected device under device_lock, where the value is
> known stable across the reset.
>
> Assisted-by: Claude:claude-opus-4-8
> Signed-off-by: Alex Williamson <alex.williamson@nvidia.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260812045325.2733631-1-alex.williamson@nvidia.com?part=2
next prev parent reply other threads:[~2026-08-12 5:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-12 4:53 [RFC PATCH 0/5] PCI/vfio-pci: Guard resets against active SR-IOV VFs Alex Williamson
2026-08-12 4:53 ` [RFC PATCH 1/5] PCI: Refuse function reset of an SR-IOV PF with enabled VFs Alex Williamson
2026-08-12 5:01 ` sashiko-bot
2026-08-12 4:53 ` [RFC PATCH 2/5] PCI: Add pci_reset_bus_cond() for a caller-gated slot or bus reset Alex Williamson
2026-08-12 5:00 ` sashiko-bot [this message]
2026-08-12 4:53 ` [RFC PATCH 3/5] vfio/pci: Refuse to reset an SR-IOV PF with enabled VFs Alex Williamson
2026-08-12 5:02 ` sashiko-bot
2026-08-12 4:53 ` [RFC PATCH 4/5] PCI: Export pci_reset_supported() Alex Williamson
2026-08-12 4:59 ` sashiko-bot
2026-08-12 4:53 ` [RFC PATCH 5/5] vfio/pci: Use pci_reset_supported() in place of reset_works Alex Williamson
2026-08-12 4:59 ` sashiko-bot
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