From: Jacob Pan <jacob.pan@linux.microsoft.com>
To: Jason Gunthorpe <jgg@nvidia.com>, baolu.lu@linux.intel.com
Cc: Yu Zhang <zhangyu1@linux.microsoft.com>,
linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org,
iommu@lists.linux.dev, linux-pci@vger.kernel.org,
linux-arch@vger.kernel.org, x86@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, jgg@ziepe.ca,
mhklinux@outlook.com, tgopinath@linux.microsoft.com,
easwar.hariharan@linux.microsoft.com,
mrathor@linux.microsoft.com, suravee.suthikulpanit@amd.com,
vasant.hegde@amd.com, jacob.pan@linux.microsoft.com
Subject: Re: [PATCH v5 4/5] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest
Date: Tue, 29 Sep 2026 14:25:42 -0700 [thread overview]
Message-ID: <20260929142542.0000575e@linux.microsoft.com> (raw)
In-Reply-To: <179071228738.122959.14326374887826159868.b4-review@b4>
Hi Jason,
On Tue, 29 Sep 2026 17:04:47 -0300
Jason Gunthorpe <jgg@nvidia.com> wrote:
> > +config HYPERV_PVIOMMU
> > + bool "Microsoft Hyper-V para-virtualized IOMMU driver for
> > Linux guests"
> > + depends on X86_64 && HYPERV
> > + select IOMMU_API
> > + select GENERIC_PT
> > + select IOMMU_PT
> > + select IOMMU_PT_X86_64
> > + select IOMMU_IOVA
>
> Should this be IOMMU_DMA ?
I agree. I guess we should also delete "select IOMMU_API", since
IOMMU_DMA selects both.
Noticed vt-d driver has the same option, maybe it should also
be changed. Baolu, is that due to historical reasons?
config INTEL_IOMMU
bool "Support for Intel IOMMU using DMA Remapping Devices"
depends on PCI_MSI && ACPI && X86
select IOMMU_API
select GENERIC_PT
select IOMMU_PT
select IOMMU_PT_X86_64
select IOMMU_PT_VTDSS
select IOMMU_IOVA
next prev parent reply other threads:[~2026-09-29 21:25 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-04 7:55 [PATCH v5 0/5] Hyper-V: Add para-virtualized IOMMU support for Linux guests Yu Zhang
2026-09-04 7:55 ` [PATCH v5 1/5] hyperv: Introduce new hypercall interfaces used by Hyper-V guest IOMMU Yu Zhang
2026-09-04 7:55 ` [PATCH v5 2/5] Drivers: hv: Add logical device ID registry for vPCI devices Yu Zhang
2026-09-04 7:55 ` [PATCH v5 3/5] iommu/x86: Add architectural MSI reserved region helper Yu Zhang
2026-09-29 20:04 ` Jason Gunthorpe
2026-09-04 7:55 ` [PATCH v5 4/5] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest Yu Zhang
2026-09-05 2:15 ` Mukesh R
2026-09-07 8:41 ` Yu Zhang
2026-09-07 21:08 ` Mukesh R
2026-09-08 3:16 ` Yu Zhang
2026-09-08 23:44 ` Mukesh R
2026-09-29 20:04 ` Jason Gunthorpe
2026-09-29 21:25 ` Jacob Pan [this message]
2026-09-29 21:34 ` Easwar Hariharan
2026-09-30 7:17 ` Vasant Hegde
2026-09-04 7:55 ` [PATCH v5 5/5] iommu/hyperv: Add page-selective IOTLB flush support Yu Zhang
2026-09-04 14:53 ` Michael Kelley
2026-09-29 20:04 ` Jason Gunthorpe
2026-09-07 8:48 ` [PATCH v5 0/5] Hyper-V: Add para-virtualized IOMMU support for Linux guests Yu Zhang
2026-09-21 16:55 ` Yu Zhang
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