From: Alex Williamson <alex@shazbot.org>
To: Omar Elghoul <oelghoul@linux.ibm.com>
Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, hca@linux.ibm.com, gor@linux.ibm.com,
agordeev@linux.ibm.com, borntraeger@linux.ibm.com,
svens@linux.ibm.com, schnelle@linux.ibm.com,
mjrosato@linux.ibm.com, alifm@linux.ibm.com,
farman@linux.ibm.com, gbayer@linux.ibm.com, pasic@linux.ibm.com,
frankja@linux.ibm.com, imbrenda@linux.ibm.com, alex@shazbot.org
Subject: Re: [PATCH v11 5/5] vfio-pci/zdev: Add VFIO FMB device features
Date: Fri, 30 Oct 2026 16:11:46 -0600 [thread overview]
Message-ID: <20261030161146.5af10847@shazbot.org> (raw)
In-Reply-To: <20261028154352.15108-6-oelghoul@linux.ibm.com>
On Wed, 28 Oct 2026 11:43:52 -0400
Omar Elghoul <oelghoul@linux.ibm.com> wrote:
> Introduce new VFIO features for zPCI devices to provide FMB passthrough to
> userspace.
>
> Allow the user to enable or disable the FMB using the SET-only feature
> VFIO_DEVICE_FEATURE_ZPCI_FMB_ENABLE. Likewise allow the user to read the
> latest FMB using the GET-only feature VFIO_DEVICE_FEATURE_ZPCI_FMB_READ
> in the case when the FMB is enabled.
>
> Signed-off-by: Omar Elghoul <oelghoul@linux.ibm.com>
> ---
> drivers/vfio/pci/vfio_pci_core.c | 4 ++
> drivers/vfio/pci/vfio_pci_priv.h | 18 +++++++++
> drivers/vfio/pci/vfio_pci_zdev.c | 64 ++++++++++++++++++++++++++++++++
> include/uapi/linux/vfio.h | 30 +++++++++++++++
> 4 files changed, 116 insertions(+)
I think the only thing we never closed on from the vfio side is the
merge plan. If this goes in via s390 I'd want a topic branch against
rc1 since there are a couple series floating around contesting for the
same feature numbers. Thanks,
Alex
prev parent reply other threads:[~2026-10-30 22:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-28 15:43 [PATCH v11 0/5] vfio-pci/zdev: Improved zPCI Function Measurement Support Omar Elghoul
2026-10-28 15:43 ` [PATCH v11 1/5] s390/pci: Hold fmb_lock when enabling or disabling PCI devices Omar Elghoul
2026-10-28 15:43 ` [PATCH v11 2/5] s390/pci: Improve function measurement state management Omar Elghoul
2026-10-28 21:05 ` Niklas Schnelle
2026-10-28 15:43 ` [PATCH v11 3/5] s390/pci: Reuse FMB buffer across enable and disable cycles Omar Elghoul
2026-10-28 15:43 ` [PATCH v11 4/5] s390/pci: Fence FMB enable/disable via debugfs for passthrough devices Omar Elghoul
2026-10-28 15:43 ` [PATCH v11 5/5] vfio-pci/zdev: Add VFIO FMB device features Omar Elghoul
2026-10-30 22:11 ` Alex Williamson [this message]
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