From: Niklas Schnelle <schnelle@linux.ibm.com>
To: Farhan Ali <alifm@linux.ibm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org
Cc: helgaas@kernel.org, lukas@wunner.de, alex@shazbot.org,
clg@redhat.com, stable@vger.kernel.org, mjrosato@linux.ibm.com
Subject: Re: [PATCH v7 3/9] PCI: Avoid saving config space state if inaccessible
Date: Tue, 20 Jan 2026 23:12:45 +0100 [thread overview]
Message-ID: <439f40a5997311fc9d750f666dcfb4a32c654a75.camel@linux.ibm.com> (raw)
In-Reply-To: <20260107183217.1365-4-alifm@linux.ibm.com>
On Wed, 2026-01-07 at 10:32 -0800, Farhan Ali wrote:
> The current reset process saves the device's config space state before reset
> and restores it afterward. However errors may occur unexpectedly and it may
> then be impossible to save config space because the device may be inaccessible
> (e.g. DPC) or config space may be corrupted. This results in saving corrupted
> values that get written back to the device during state restoration.
>
> With a reset we want to recover/restore the device into a functional
> state. So avoid saving the state of the config space when the device config
> space is inaccessible.
>
> Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
> ---
Running checkpatch.pl with "--strict" on the series it pointed out that
this commit description has lines over 75 characters.
Thanks,
Niklas
next prev parent reply other threads:[~2026-01-20 22:13 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-07 18:32 [PATCH v7 0/9] Error recovery for vfio-pci devices on s390x Farhan Ali
2026-01-07 18:32 ` [PATCH v7 1/9] PCI: Allow per function PCI slots Farhan Ali
2026-01-07 18:32 ` [PATCH v7 2/9] s390/pci: Add architecture specific resource/bus address translation Farhan Ali
2026-01-20 22:15 ` Niklas Schnelle
2026-01-07 18:32 ` [PATCH v7 3/9] PCI: Avoid saving config space state if inaccessible Farhan Ali
2026-01-19 21:23 ` Niklas Schnelle
2026-01-20 19:50 ` Farhan Ali
2026-01-20 22:12 ` Niklas Schnelle [this message]
2026-01-07 18:32 ` [PATCH v7 4/9] PCI: Add additional checks for flr reset Farhan Ali
2026-01-19 21:34 ` Niklas Schnelle
2026-01-07 18:32 ` [PATCH v7 5/9] s390/pci: Update the logic for detecting passthrough device Farhan Ali
2026-01-07 18:32 ` [PATCH v7 6/9] s390/pci: Store PCI error information for passthrough devices Farhan Ali
2026-01-20 22:34 ` Niklas Schnelle
2026-01-07 18:32 ` [PATCH v7 7/9] vfio-pci/zdev: Add a device feature for error information Farhan Ali
2026-01-19 16:24 ` Julian Ruess
2026-01-20 18:54 ` Farhan Ali
2026-01-07 18:32 ` [PATCH v7 8/9] vfio: Add a reset_done callback for vfio-pci driver Farhan Ali
2026-01-19 16:41 ` Julian Ruess
2026-01-07 18:32 ` [PATCH v7 9/9] vfio: Remove the pcie check for VFIO_PCI_ERR_IRQ_INDEX Farhan Ali
2026-01-19 16:56 ` Julian Ruess
2026-01-20 18:56 ` Farhan Ali
2026-01-15 18:28 ` [PATCH v7 0/9] Error recovery for vfio-pci devices on s390x Farhan Ali
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