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From: Lu Baolu <baolu.lu@linux.intel.com>
To: Jon Derrick <jonathan.derrick@intel.com>,
	linux-pci@vger.kernel.org, Bjorn Helgaas <helgaas@kernel.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: iommu@lists.linux-foundation.org, Keith Busch <kbusch@kernel.org>,
	David Woodhouse <dwmw2@infradead.org>,
	Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v5 4/7] iommu/vt-d: Use pci_real_dma_dev() for mapping
Date: Wed, 22 Jan 2020 12:37:32 +0800	[thread overview]
Message-ID: <f9eb8cc8-e0d8-60db-78c0-55366daaa434@linux.intel.com> (raw)
In-Reply-To: <1579613871-301529-5-git-send-email-jonathan.derrick@intel.com>

On 1/21/20 9:37 PM, Jon Derrick wrote:
> The PCI device may have a DMA requester on another bus, such as VMD
> subdevices needing to use the VMD endpoint. This case requires the real
> DMA device when mapping to IOMMU.
> 
> Signed-off-by: Jon Derrick<jonathan.derrick@intel.com>

Acked-by: Lu Baolu <baolu.lu@linux.intel.com>

Thanks,
baolu
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WARNING: multiple messages have this Message-ID (diff)
From: Lu Baolu <baolu.lu@linux.intel.com>
To: Jon Derrick <jonathan.derrick@intel.com>,
	linux-pci@vger.kernel.org, Bjorn Helgaas <helgaas@kernel.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: baolu.lu@linux.intel.com, iommu@lists.linux-foundation.org,
	Christoph Hellwig <hch@lst.de>, Keith Busch <kbusch@kernel.org>,
	Joerg Roedel <joro@8bytes.org>,
	David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH v5 4/7] iommu/vt-d: Use pci_real_dma_dev() for mapping
Date: Wed, 22 Jan 2020 12:37:32 +0800	[thread overview]
Message-ID: <f9eb8cc8-e0d8-60db-78c0-55366daaa434@linux.intel.com> (raw)
In-Reply-To: <1579613871-301529-5-git-send-email-jonathan.derrick@intel.com>

On 1/21/20 9:37 PM, Jon Derrick wrote:
> The PCI device may have a DMA requester on another bus, such as VMD
> subdevices needing to use the VMD endpoint. This case requires the real
> DMA device when mapping to IOMMU.
> 
> Signed-off-by: Jon Derrick<jonathan.derrick@intel.com>

Acked-by: Lu Baolu <baolu.lu@linux.intel.com>

Thanks,
baolu

  reply	other threads:[~2020-01-22  4:39 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-21 13:37 [PATCH v5 0/7] Clean up VMD DMA Map Ops Jon Derrick
2020-01-21 13:37 ` Jon Derrick
2020-01-21 13:37 ` [PATCH v5 1/7] x86/PCI: Add a to_pci_sysdata helper Jon Derrick
2020-01-21 13:37   ` Jon Derrick
2020-01-21 13:37 ` [PATCH v5 2/7] x86/PCI: Expose VMD's PCI Device in pci_sysdata Jon Derrick
2020-01-21 13:37   ` Jon Derrick
2020-01-21 13:37 ` [PATCH v5 3/7] PCI: Introduce pci_real_dma_dev() Jon Derrick
2020-01-21 13:37   ` Jon Derrick
2020-01-22 21:12   ` Bjorn Helgaas
2020-01-22 21:12     ` Bjorn Helgaas
2020-01-23 16:08     ` Lorenzo Pieralisi
2020-01-23 16:08       ` Lorenzo Pieralisi
2020-01-21 13:37 ` [PATCH v5 4/7] iommu/vt-d: Use pci_real_dma_dev() for mapping Jon Derrick
2020-01-21 13:37   ` Jon Derrick
2020-01-22  4:37   ` Lu Baolu [this message]
2020-01-22  4:37     ` Lu Baolu
2020-01-21 13:37 ` [PATCH v5 5/7] iommu/vt-d: Remove VMD child device sanity check Jon Derrick
2020-01-21 13:37   ` Jon Derrick
2020-01-22  4:37   ` Lu Baolu
2020-01-22  4:37     ` Lu Baolu
2020-01-21 13:37 ` [PATCH v5 6/7] PCI: vmd: Stop overriding dma_map_ops Jon Derrick
2020-01-21 13:37   ` Jon Derrick
2020-01-22 16:56   ` Keith Busch
2020-01-22 16:56     ` Keith Busch
2020-01-21 13:37 ` [PATCH v5 7/7] x86/PCI: Remove X86_DEV_DMA_OPS Jon Derrick
2020-01-21 13:37   ` Jon Derrick
2020-01-24 21:02 ` [PATCH v5 0/7] Clean up VMD DMA Map Ops Bjorn Helgaas
2020-01-24 21:02   ` Bjorn Helgaas

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