From: sashiko-bot@kernel.org
To: "Omar Elghoul" <oelghoul@linux.ibm.com>
Cc: linux-s390@vger.kernel.org,
"Christian Borntraeger" <borntraeger@linux.ibm.com>,
"Vasily Gorbik" <gor@linux.ibm.com>,
"Heiko Carstens" <hca@linux.ibm.com>,
"Alexander Gordeev" <agordeev@linux.ibm.com>,
kvm@vger.kernel.org
Subject: Re: [PATCH v7 3/4] s390/pci: Fence FMB enable/disable via debugfs for passthrough devices
Date: Tue, 22 Sep 2026 19:58:47 +0000 [thread overview]
Message-ID: <20260922195847.93AA41F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20260922195141.94548-4-oelghoul@linux.ibm.com>
> Introduce a fence over enabling or disabling FMB via debugfs when the zPCI
> device is associated with a KVM. This will prevent processes on the host
> from tampering with the FMB while the guest is still using it, which may
> cause partial counter resets and inconsistent reads which have no parallel
> in the architecture.
>
> For VFIO devices that are not associated with a KVM (i.e., for userspace
> drivers other than QEMU), this fence does not take effect.
>
> Signed-off-by: Omar Elghoul <oelghoul@linux.ibm.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260922195141.94548-1-oelghoul@linux.ibm.com?part=3
next prev parent reply other threads:[~2026-09-22 19:58 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-22 19:51 [PATCH v7 0/4] vfio-pci/zdev: Improved zPCI Function Measurement Support Omar Elghoul
2026-09-22 19:51 ` [PATCH v7 1/4] s390/pci: Hold fmb_lock when enabling or disabling PCI devices Omar Elghoul
2026-09-22 20:00 ` sashiko-bot
2026-09-22 19:51 ` [PATCH v7 2/4] s390/pci: Reuse FMB buffer and preserve state in device re-enablement Omar Elghoul
2026-09-22 20:02 ` sashiko-bot
2026-09-23 15:09 ` Gerd Bayer
2026-09-23 16:37 ` Omar Elghoul
2026-09-24 15:55 ` Gerd Bayer
2026-09-24 16:47 ` Omar Elghoul
2026-09-23 22:20 ` Matthew Rosato
2026-09-24 14:27 ` Omar Elghoul
2026-09-30 18:57 ` Alex Williamson
2026-09-30 19:36 ` Omar Elghoul
2026-09-22 19:51 ` [PATCH v7 3/4] s390/pci: Fence FMB enable/disable via debugfs for passthrough devices Omar Elghoul
2026-09-22 19:58 ` sashiko-bot [this message]
2026-09-22 19:51 ` [PATCH v7 4/4] vfio-pci/zdev: Add VFIO FMB device features Omar Elghoul
2026-09-22 19:59 ` sashiko-bot
2026-09-30 18:57 ` Alex Williamson
2026-09-30 19:17 ` Matthew Rosato
2026-09-30 19:40 ` Omar Elghoul
2026-09-30 20:03 ` Alex Williamson
2026-09-30 17:48 ` [PATCH v7 0/4] vfio-pci/zdev: Improved zPCI Function Measurement Support Omar Elghoul
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260922195847.93AA41F000FF@smtp.kernel.org \
--to=sashiko-bot@kernel.org \
--cc=agordeev@linux.ibm.com \
--cc=borntraeger@linux.ibm.com \
--cc=gor@linux.ibm.com \
--cc=hca@linux.ibm.com \
--cc=kvm@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=oelghoul@linux.ibm.com \
--cc=sashiko-reviews@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.