From: Jason Gunthorpe <jgg@nvidia.com>
To: Mukesh R <mrathor@linux.microsoft.com>
Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
iommu@lists.linux.dev, linux-arch@vger.kernel.org,
jacob.pan@linux.microsoft.com, kys@microsoft.com,
haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
tglx@kernel.org, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
joro@8bytes.org, will@kernel.org, robin.murphy@arm.com,
arnd@arndb.de
Subject: Re: [PATCH V1 3/3] x86/hyperv: Implement root VM IOMMU kernel only driver
Date: Mon, 28 Sep 2026 20:36:30 -0300 [thread overview]
Message-ID: <20260928233630.GF1616761@nvidia.com> (raw)
In-Reply-To: <28ef0634-24ed-2cc7-89c8-48c8615a9691@linux.microsoft.com>
On Mon, Sep 28, 2026 at 04:33:35PM -0700, Mukesh R wrote:
> > > +static void hv_iommu_get_resv_regions(struct device *dev,
> > > + struct list_head *head)
> > > +{
> > > + struct iommu_resv_region *reg;
> > > +
> > > + /* reserve the entire LAPIC region */
> > > + reg = iommu_alloc_resv_region(0xfee00000, SZ_1M, 0, IOMMU_RESV_MSI,
> > > + GFP_KERNEL);
> >
> > There was some discussion to make a helper for this, I don't see it
> > merged yet..
>
> we are both waiting on each other, whoever goes first will leave
> the follower to address it i guess. i cannot test without this and
> i am not sure if that series will merge first or this.
Maybe include those patches in this series too?
I think this is fine it should be able to go after you repost it with
the minor changes and the clarification on the unmap behavior
Jason
prev parent reply other threads:[~2026-09-28 23:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-24 2:02 [PATCH V1 0/3] Hyper-V: root VM iommu " Mukesh R
2026-09-24 2:02 ` [PATCH V1 1/3] PCI: hv: Export hv_build_devid_type_pci() and change return type Mukesh R
2026-09-24 2:02 ` [PATCH V1 2/3] mshv: Import data structs around device domains from hyperv headers Mukesh R
2026-09-24 17:48 ` Easwar Hariharan
2026-09-24 2:02 ` [PATCH V1 3/3] x86/hyperv: Implement root VM IOMMU kernel only driver Mukesh R
2026-09-24 13:35 ` Jörg Rödel
2026-09-25 0:14 ` Mukesh R
2026-09-25 7:13 ` Jörg Rödel
2026-09-28 22:33 ` Mukesh R
2026-09-28 13:38 ` Jason Gunthorpe
2026-09-28 16:35 ` Easwar Hariharan
2026-09-28 23:33 ` Mukesh R
2026-09-28 23:36 ` Jason Gunthorpe [this message]
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