From: David Woodhouse <dwmw2@infradead.org>
To: Jason Andryuk <jandryuk@gmail.com>, josef@oderland.se
Cc: boris.ostrovsky@oracle.com, helgaas@kernel.org, jgross@suse.com,
linux-pci@vger.kernel.org, maz@kernel.org, tglx@linutronix.de,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH] PCI/MSI: Fix masking MSI/MSI-X on Xen PV
Date: Mon, 25 Oct 2021 08:44:52 +0100 [thread overview]
Message-ID: <eb38c1d2707d03bf675d7b15f014cbe741de0998.camel@infradead.org> (raw)
In-Reply-To: <20211025012503.33172-1-jandryuk@gmail.com>
[-- Attachment #1: Type: text/plain, Size: 891 bytes --]
On Sun, 2021-10-24 at 21:25 -0400, Jason Andryuk wrote:
> commit fcacdfbef5a1 ("PCI/MSI: Provide a new set of mask and unmask
> functions") introduce functions pci_msi_update_mask() and
> pci_msix_write_vector_ctrl() that is missing checks for
> pci_msi_ignore_mask that exists in commit 446a98b19fd6 ("PCI/MSI: Use
> new mask/unmask functions"). The checks are in place at the high level
> __pci_msi_mask_desc()/__pci_msi_unmask_desc(), but some functions call
> directly to the helpers.
>
> Push the pci_msi_ignore_mask check down to the functions that make
> the actual writes. This keeps the logic local to the writes that need
> to be bypassed.
>
> With Xen PV, the hypervisor is responsible for masking and unmasking the
> interrupts, which pci_msi_ignore_mask is used to indicate.
This isn't just for Xen PV; Xen HVM guests let Xen unmask the MSI for
them too.
[-- Attachment #2: smime.p7s --]
[-- Type: application/pkcs7-signature, Size: 5174 bytes --]
next prev parent reply other threads:[~2021-10-25 7:45 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-18 6:22 [PATCH] PCI/MSI: Re-add checks for skip masking MSI-X on Xen PV Josef Johansson
2021-10-19 19:57 ` Bjorn Helgaas
2021-10-19 20:15 ` Josef Johansson
2021-10-19 20:29 ` Bjorn Helgaas
2021-10-19 21:48 ` [PATCH v2] " Josef Johansson
2021-10-20 12:51 ` Marc Zyngier
2021-10-20 14:03 ` Jason Andryuk
2021-10-21 8:25 ` Josef Johansson
2021-10-24 18:55 ` Josef Johansson
2021-10-25 1:25 ` [PATCH] PCI/MSI: Fix masking MSI/MSI-X " Jason Andryuk
2021-10-25 7:44 ` David Woodhouse [this message]
2021-10-25 11:43 ` Roger Pau Monné
2021-10-25 11:53 ` David Woodhouse
2021-10-25 12:58 ` Roger Pau Monné
2021-10-25 13:02 ` David Woodhouse
2021-10-25 14:12 ` Roger Pau Monné
2021-10-25 12:31 ` Jason Andryuk
2021-10-25 12:27 ` Jason Andryuk
2021-10-25 16:46 ` Josef Johansson
2021-10-26 21:17 ` Josef Johansson
2021-10-27 8:45 ` Thomas Gleixner
2021-10-27 9:50 ` [PATCH] PCI/MSI: Move non-mask check back into low level accessors Thomas Gleixner
2021-10-27 9:54 ` Josef Johansson
2021-10-27 12:01 ` Josef Johansson
2021-10-27 15:29 ` Josef Johansson
2021-11-03 23:26 ` Thomas Gleixner
2021-11-03 23:27 ` [PATCH v2] " Thomas Gleixner
2021-11-09 14:53 ` Thomas Gleixner
2021-11-10 13:31 ` Josef Johansson
2021-11-10 16:05 ` Josef Johansson
2021-11-03 23:45 ` [PATCH] " Thomas Gleixner
2021-11-04 9:00 ` Josef Johansson
2021-11-04 17:12 ` Peter Zijlstra
2021-11-04 17:31 ` Vincent Guittot
2021-11-10 20:30 ` Josef Johansson
2021-11-10 23:13 ` Josef Johansson
2021-10-27 9:57 ` David Woodhouse
2021-10-25 1:25 ` [PATCH v2] PCI/MSI: Re-add checks for skip masking MSI-X on Xen PV Jason Andryuk
2021-10-25 19:21 ` Josef Johansson
2021-10-27 6:24 ` David Woodhouse
2021-10-27 8:13 ` Josef Johansson
2021-10-27 8:26 ` David Woodhouse
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=eb38c1d2707d03bf675d7b15f014cbe741de0998.camel@infradead.org \
--to=dwmw2@infradead.org \
--cc=boris.ostrovsky@oracle.com \
--cc=helgaas@kernel.org \
--cc=jandryuk@gmail.com \
--cc=jgross@suse.com \
--cc=josef@oderland.se \
--cc=linux-pci@vger.kernel.org \
--cc=maz@kernel.org \
--cc=tglx@linutronix.de \
--cc=xen-devel@lists.xenproject.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).