From: Jacob Pan <jacob.pan@linux.microsoft.com>
To: Yu Zhang <zhangyu1@linux.microsoft.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>,
linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org,
iommu@lists.linux.dev, linux-pci@vger.kernel.org,
linux-arch@vger.kernel.org, wei.liu@kernel.org,
kys@microsoft.com, haiyangz@microsoft.com, decui@microsoft.com,
longli@microsoft.com, joro@8bytes.org, will@kernel.org,
robin.murphy@arm.com, bhelgaas@google.com,
kwilczynski@kernel.org, lpieralisi@kernel.org, mani@kernel.org,
robh@kernel.org, arnd@arndb.de, mhklinux@outlook.com,
tgopinath@linux.microsoft.com,
easwar.hariharan@linux.microsoft.com,
jacob.pan@linux.microsoft.com
Subject: Re: [PATCH v1 3/4] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest
Date: Wed, 20 May 2026 11:27:08 -0700 [thread overview]
Message-ID: <20260520112708.00003640@linux.microsoft.com> (raw)
In-Reply-To: <yqhb6vxoovscvfafgv6i6zn7uydpfxeff7hqmvbn6z7c2tjqp6@jn2vvtxqgfef>
Hi Yu,
On Wed, 20 May 2026 23:25:43 +0800
Yu Zhang <zhangyu1@linux.microsoft.com> wrote:
> > > +static const struct iommu_domain_ops
> > > hv_iommu_identity_domain_ops = {
> > > + .attach_dev = hv_iommu_attach_dev,
> > > +};
> > > +
> > > +static const struct iommu_domain_ops
> > > hv_iommu_blocking_domain_ops = {
> > > + .attach_dev = hv_iommu_attach_dev,
> > > +};
> >
> > Usually I would expect these to have their own attach
> > functions. blocking in particular must have an attach op that cannot
> > fail. It is used to recover the device back to a known translation
> > in case of cascading other errors.
> >
>
> For blocking domain, the hypercall handler of such attach essentially
> disable the translation and IOPF for the device.
I think this should disable all faults, including unrecoverable fault
reporting. right?
next prev parent reply other threads:[~2026-05-20 18:27 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-11 16:24 [PATCH v1 0/4] Hyper-V: Add para-virtualized IOMMU support for Linux guests Yu Zhang
2026-05-11 16:24 ` [PATCH v1 1/4] iommu: Move Hyper-V IOMMU driver to its own subdirectory Yu Zhang
2026-05-15 22:19 ` Jason Gunthorpe
2026-05-20 6:37 ` Yu Zhang
2026-05-20 13:38 ` Jason Gunthorpe
2026-05-11 16:24 ` [PATCH v1 2/4] hyperv: Introduce new hypercall interfaces used by Hyper-V guest IOMMU Yu Zhang
2026-05-11 16:24 ` [PATCH v1 3/4] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest Yu Zhang
2026-05-13 18:39 ` Jacob Pan
2026-05-15 12:38 ` Yu Zhang
2026-05-14 18:13 ` Michael Kelley
2026-05-15 13:59 ` Yu Zhang
2026-05-15 14:51 ` Michael Kelley
2026-05-15 16:53 ` Yu Zhang
2026-05-15 17:36 ` Michael Kelley
2026-05-20 15:50 ` Yu Zhang
2026-05-16 0:11 ` Mukesh R
2026-05-18 9:38 ` Yu Zhang
2026-05-15 22:31 ` Jason Gunthorpe
2026-05-20 15:25 ` Yu Zhang
2026-05-20 18:27 ` Jacob Pan [this message]
2026-05-11 16:24 ` [PATCH v1 4/4] iommu/hyperv: Add page-selective IOTLB flush support Yu Zhang
2026-05-12 23:45 ` sashiko-bot
2026-05-14 18:14 ` Michael Kelley
2026-05-14 21:16 ` Michael Kelley
2026-05-15 16:23 ` Yu Zhang
2026-05-15 18:00 ` Michael Kelley
2026-05-15 23:33 ` Michael Kelley
2026-05-20 16:27 ` Yu Zhang
2026-05-15 22:35 ` Jason Gunthorpe
2026-05-20 17:15 ` Yu Zhang
2026-05-20 17:29 ` Jason Gunthorpe
2026-05-20 19:26 ` Michael Kelley
2026-05-20 20:40 ` Jacob Pan
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=20260520112708.00003640@linux.microsoft.com \
--to=jacob.pan@linux.microsoft.com \
--cc=arnd@arndb.de \
--cc=bhelgaas@google.com \
--cc=decui@microsoft.com \
--cc=easwar.hariharan@linux.microsoft.com \
--cc=haiyangz@microsoft.com \
--cc=iommu@lists.linux.dev \
--cc=jgg@ziepe.ca \
--cc=joro@8bytes.org \
--cc=kwilczynski@kernel.org \
--cc=kys@microsoft.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=longli@microsoft.com \
--cc=lpieralisi@kernel.org \
--cc=mani@kernel.org \
--cc=mhklinux@outlook.com \
--cc=robh@kernel.org \
--cc=robin.murphy@arm.com \
--cc=tgopinath@linux.microsoft.com \
--cc=wei.liu@kernel.org \
--cc=will@kernel.org \
--cc=zhangyu1@linux.microsoft.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