From: Lu Baolu <baolu.lu@linux.intel.com>
To: Jon Derrick <jonathan.derrick@intel.com>,
iommu@lists.linux-foundation.org
Cc: baolu.lu@linux.intel.com, linux-pci@vger.kernel.org,
Joerg Roedel <joro@8bytes.org>,
Jacob Pan <jacob.jun.pan@linux.intel.com>,
Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>,
Ashok Raj <ashok.raj@intel.com>
Subject: Re: [PATCH v1 2/3] iommu/vt-d: Allocate domain info for real DMA sub-devices
Date: Thu, 28 May 2020 15:14:55 +0800 [thread overview]
Message-ID: <39342c83-8484-5a42-f16e-fe3cda67c809@linux.intel.com> (raw)
In-Reply-To: <fd4b5313-efd0-90bf-5841-80a97ce5f652@linux.intel.com>
On 2020/5/28 15:01, Lu Baolu wrote:
> On 2020/5/28 0:56, Jon Derrick wrote:
>> Sub-devices of a real DMA device might exist on a separate segment than
>> the real DMA device and its IOMMU. These devices should still have a
>> valid device_domain_info, but the current dma alias model won't
>> allocate info for the subdevice.
>>
>> This patch adds a segment member to struct device_domain_info and uses
>> the sub-device's BDF so that these sub-devices won't alias to other
>> devices.
>>
>> Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
>
> Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
And a fix tag, so that it could be picked up for v5.6+ stable kernel.
Fixes: 2b0140c69637e ("iommu/vt-d: Use pci_real_dma_dev() for mapping")
Best regards,
baolu
next prev parent reply other threads:[~2020-05-28 7:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-27 16:56 [PATCH v1 0/3] iommu/vt-d: real DMA sub-device info allocation Jon Derrick
2020-05-27 16:56 ` [PATCH v1 1/3] iommu/vt-d: Only clear real DMA device's context entries Jon Derrick
2020-05-28 6:59 ` Lu Baolu
2020-05-27 16:56 ` [PATCH v1 2/3] iommu/vt-d: Allocate domain info for real DMA sub-devices Jon Derrick
2020-05-28 7:01 ` Lu Baolu
2020-05-28 7:14 ` Lu Baolu [this message]
2020-05-27 16:56 ` [PATCH v1 3/3] iommu/vt-d: Remove real DMA lookup in find_domain Jon Derrick
2020-05-28 7:02 ` Lu Baolu
2020-05-29 13:12 ` [PATCH v1 0/3] iommu/vt-d: real DMA sub-device info allocation Joerg Roedel
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