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From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: rjw@rjwysocki.net, lenb@kernel.org, joro@8bytes.org,
	will@kernel.org, linux-acpi@vger.kernel.org,
	iommu@lists.linux-foundation.org,
	virtualization@lists.linux-foundation.org, eric.auger@redhat.com,
	sebastien.boeuf@intel.com, robin.murphy@arm.com,
	kevin.tian@intel.com, lorenzo.pieralisi@arm.com
Subject: Re: [PATCH 3/3] iommu/virtio: Enable x86 support
Date: Thu, 15 Apr 2021 17:15:18 +0200
Message-ID: <YHhYhoDn3zQ9MaGB@myrica> (raw)
In-Reply-To: <20210318142709-mutt-send-email-mst@kernel.org>

On Thu, Mar 18, 2021 at 02:28:02PM -0400, Michael S. Tsirkin wrote:
> On Tue, Mar 16, 2021 at 08:16:54PM +0100, Jean-Philippe Brucker wrote:
> > With the VIOT support in place, x86 platforms can now use the
> > virtio-iommu.
> > 
> > The arm64 Kconfig selects IOMMU_DMA, while x86 IOMMU drivers select it
> > themselves.
> > 
> > Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
> 
> Acked-by: Michael S. Tsirkin <mst@redhat.com>
> 
> > ---
> >  drivers/iommu/Kconfig | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
> > index 2819b5c8ec30..ccca83ef2f06 100644
> > --- a/drivers/iommu/Kconfig
> > +++ b/drivers/iommu/Kconfig
> > @@ -400,8 +400,9 @@ config HYPERV_IOMMU
> >  config VIRTIO_IOMMU
> >  	tristate "Virtio IOMMU driver"
> >  	depends on VIRTIO
> > -	depends on ARM64
> > +	depends on (ARM64 || X86)
> >  	select IOMMU_API
> > +	select IOMMU_DMA if X86
> 
> Would it hurt to just select unconditionally? Seems a bit cleaner
> ...

Yes I think I'll do this for the moment

Thanks,
Jean

> 
> >  	select INTERVAL_TREE
> >  	select ACPI_VIOT if ACPI
> >  	help
> > -- 
> > 2.30.2
> 

  reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-16 19:16 [PATCH 0/3] Add support for ACPI VIOT Jean-Philippe Brucker
2021-03-16 19:16 ` [PATCH 1/3] ACPICA: iASL: Add definitions for the VIOT table Jean-Philippe Brucker
2021-03-18 17:52   ` Auger Eric
2021-04-15 14:36     ` Jean-Philippe Brucker
2021-03-16 19:16 ` [PATCH 2/3] ACPI: Add driver " Jean-Philippe Brucker
2021-03-18 19:36   ` Robin Murphy
2021-04-15 14:31     ` Jean-Philippe Brucker
2021-03-19 10:44   ` Auger Eric
2021-04-15 14:46     ` Jean-Philippe Brucker
2021-03-16 19:16 ` [PATCH 3/3] iommu/virtio: Enable x86 support Jean-Philippe Brucker
2021-03-18 10:44   ` Joerg Roedel
2021-03-18 11:43   ` Robin Murphy
2021-04-15 15:14     ` Jean-Philippe Brucker
2021-03-18 18:28   ` Michael S. Tsirkin
2021-04-15 15:15     ` Jean-Philippe Brucker [this message]
2021-03-19 10:58 ` [PATCH 0/3] Add support for ACPI VIOT Auger Eric
2021-03-19 11:16   ` Jean-Philippe Brucker

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