From: Logan Gunthorpe <logang@deltatee.com>
To: Matt Evans <mattev@meta.com>, Bjorn Helgaas <bhelgaas@google.com>,
Ankit Agrawal <ankita@nvidia.com>,
Leon Romanovsky <leon@kernel.org>,
Alex Williamson <alex@shazbot.org>,
Niklas Schnelle <schnelle@linux.ibm.com>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] PCI/P2PDMA: Avoid returning a provider for non_mappable_bars
Date: Tue, 21 Apr 2026 12:14:57 -0600 [thread overview]
Message-ID: <35163ccd-a282-417c-865e-9cc111b70fa5@deltatee.com> (raw)
In-Reply-To: <20260421174351.3897842-1-mattev@meta.com>
On 2026-04-21 11:43, Matt Evans wrote:
> Extend pcim_p2pdma_provider()'s checks to exclude functions that have
> pdev->non_mappable_bars set.
>
> Consumers such as VFIO were previously able to map these for access by
> the CPU or P2P. Update the comment on non_mappable_bars to show it
> refers to any access, not just userspace CPU access.
>
> Fixes: 372d6d1b8ae3c ("PCI/P2PDMA: Refactor to separate core P2P functionality from memory allocation")
> Signed-off-by: Matt Evans <mattev@meta.com>
This makes sense to me, thanks.
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
next prev parent reply other threads:[~2026-04-21 18:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-21 17:43 [PATCH] PCI/P2PDMA: Avoid returning a provider for non_mappable_bars Matt Evans
2026-04-21 18:14 ` Logan Gunthorpe [this message]
2026-04-21 19:49 ` Leon Romanovsky
2026-04-22 9:19 ` Niklas Schnelle
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=35163ccd-a282-417c-865e-9cc111b70fa5@deltatee.com \
--to=logang@deltatee.com \
--cc=alex@shazbot.org \
--cc=ankita@nvidia.com \
--cc=bhelgaas@google.com \
--cc=leon@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=mattev@meta.com \
--cc=schnelle@linux.ibm.com \
/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