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From: Leon Romanovsky <leon@kernel.org>
To: Lu Baolu <baolu.lu@linux.intel.com>
Cc: tglx@linutronix.de, ashok.raj@intel.com, kevin.tian@intel.com,
	dave.jiang@intel.com, megha.dey@intel.com, dwmw2@infradead.org,
	alex.williamson@redhat.com, bhelgaas@google.com,
	dan.j.williams@intel.com, will@kernel.org, joro@8bytes.org,
	dmaengine@vger.kernel.org, eric.auger@redhat.com,
	jacob.jun.pan@intel.com, jgg@mellanox.com, kvm@vger.kernel.org,
	kwankhede@nvidia.com, linux-kernel@vger.kernel.org,
	linux-pci@vger.kernel.org, iommu@lists.linux-foundation.org,
	maz@kernel.org, mona.hossain@intel.com, netanelg@mellanox.com,
	parav@mellanox.com, pbonzini@redhat.com, rafael@kernel.org,
	samuel.ortiz@intel.com, sanjay.k.kumar@intel.com,
	shahafs@mellanox.com, tony.luck@intel.com, vkoul@kernel.org,
	yan.y.zhao@linux.intel.com, yi.l.liu@intel.com
Subject: Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU
Date: Fri, 15 Jan 2021 08:31:08 +0200	[thread overview]
Message-ID: <20210115063108.GI944463@unreal> (raw)
In-Reply-To: <b0c8b260-8e23-a5bd-d2da-ca1d67cdfa8a@linux.intel.com>

On Fri, Jan 15, 2021 at 07:49:47AM +0800, Lu Baolu wrote:
> Hi Leon,
>
> On 1/14/21 9:26 PM, Leon Romanovsky wrote:
> > On Thu, Jan 14, 2021 at 09:30:02AM +0800, Lu Baolu wrote:
> > > Some vendor IOMMU drivers are able to declare that it is running in a VM
> > > context. This is very valuable for the features that only want to be
> > > supported on bare metal. Add a capability bit so that it could be used.
> >
> > And how is it used? Who and how will set it?
>
> Use the existing iommu_capable(). I should add more descriptions about
> who and how to use it.

I want to see the code that sets this capability.

Thanks

WARNING: multiple messages have this Message-ID (diff)
From: Leon Romanovsky <leon@kernel.org>
To: Lu Baolu <baolu.lu@linux.intel.com>
Cc: kvm@vger.kernel.org, rafael@kernel.org,
	linux-pci@vger.kernel.org, sanjay.k.kumar@intel.com,
	mona.hossain@intel.com, samuel.ortiz@intel.com,
	kwankhede@nvidia.com, will@kernel.org, dan.j.williams@intel.com,
	dave.jiang@intel.com, ashok.raj@intel.com, netanelg@mellanox.com,
	maz@kernel.org, vkoul@kernel.org, jgg@mellanox.com,
	yan.y.zhao@linux.intel.com, shahafs@mellanox.com,
	kevin.tian@intel.com, parav@mellanox.com,
	alex.williamson@redhat.com, bhelgaas@google.com,
	tglx@linutronix.de, megha.dey@intel.com, tony.luck@intel.com,
	linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	jacob.jun.pan@intel.com, dmaengine@vger.kernel.org,
	pbonzini@redhat.com, dwmw2@infradead.org
Subject: Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU
Date: Fri, 15 Jan 2021 08:31:08 +0200	[thread overview]
Message-ID: <20210115063108.GI944463@unreal> (raw)
In-Reply-To: <b0c8b260-8e23-a5bd-d2da-ca1d67cdfa8a@linux.intel.com>

On Fri, Jan 15, 2021 at 07:49:47AM +0800, Lu Baolu wrote:
> Hi Leon,
>
> On 1/14/21 9:26 PM, Leon Romanovsky wrote:
> > On Thu, Jan 14, 2021 at 09:30:02AM +0800, Lu Baolu wrote:
> > > Some vendor IOMMU drivers are able to declare that it is running in a VM
> > > context. This is very valuable for the features that only want to be
> > > supported on bare metal. Add a capability bit so that it could be used.
> >
> > And how is it used? Who and how will set it?
>
> Use the existing iommu_capable(). I should add more descriptions about
> who and how to use it.

I want to see the code that sets this capability.

Thanks
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

  reply	other threads:[~2021-01-15  6:32 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-14  1:30 [RFC PATCH v3 0/2] Add platform check for subdevice irq domain Lu Baolu
2021-01-14  1:30 ` Lu Baolu
2021-01-14  1:30 ` [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU Lu Baolu
2021-01-14  1:30   ` Lu Baolu
2021-01-14 13:26   ` Leon Romanovsky
2021-01-14 13:26     ` Leon Romanovsky
2021-01-14 23:49     ` Lu Baolu
2021-01-14 23:49       ` Lu Baolu
2021-01-15  6:31       ` Leon Romanovsky [this message]
2021-01-15  6:31         ` Leon Romanovsky
2021-01-16  1:20         ` Lu Baolu
2021-01-16  1:20           ` Lu Baolu
2021-01-16  8:39           ` Leon Romanovsky
2021-01-16  8:39             ` Leon Romanovsky
2021-01-16  8:47             ` Lu Baolu
2021-01-16  8:47               ` Lu Baolu
2021-01-17  5:30               ` Leon Romanovsky
2021-01-17  5:30                 ` Leon Romanovsky
2021-01-15  4:46   ` Jason Wang
2021-01-15  4:46     ` Jason Wang
2021-01-14  1:30 ` [RFC PATCH v3 2/2] platform-msi: Add platform check for subdevice irq domain Lu Baolu
2021-01-14  1:30   ` Lu Baolu
2021-01-14  3:03   ` Tian, Kevin
2021-01-14  3:03     ` Tian, Kevin

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