From: Lu Baolu <baolu.lu@linux.intel.com>
To: "Tian, Kevin" <kevin.tian@intel.com>, Joerg Roedel <joro@8bytes.org>
Cc: "Raj, Ashok" <ashok.raj@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>
Subject: Re: [PATCH v2 0/7] iommu/vt-d: Add page request draining support
Date: Wed, 15 Apr 2020 16:25:56 +0800 [thread overview]
Message-ID: <86b04dae-ff11-fc4b-551a-17c0ce352843@linux.intel.com> (raw)
In-Reply-To: <AADFC41AFE54684AB9EE6CBC0274A5D19D820475@SHSMSX104.ccr.corp.intel.com>
Hi Kevin,
On 2020/4/15 15:57, Tian, Kevin wrote:
>> From: Lu Baolu<baolu.lu@linux.intel.com>
>> Sent: Wednesday, April 15, 2020 1:26 PM
>>
>> When a PASID is stopped or terminated, there can be pending PRQs
>> (requests that haven't received responses) in the software and
>> remapping hardware. The pending page requests must be drained
>> so that the pasid could be reused. The register level interface
>> for page request draining is defined in 7.11 of the VT-d spec.
>> This series adds the support for page requests draining.
> 7.11 doesn't include register-level interface. It just talks about
> the general requirements on system software, endpoint device
> and its driver.
>
I will replace this with "spec 7.10 specifies the software steps to
drain page requests and response".
Best regards,
baolu
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prev parent reply other threads:[~2020-04-15 8:26 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 5:25 [PATCH v2 0/7] iommu/vt-d: Add page request draining support Lu Baolu
2020-04-15 5:25 ` [PATCH v2 1/7] iommu/vt-d: Refactor parameters for qi_submit_sync() Lu Baolu
2020-04-15 8:02 ` Tian, Kevin
2020-04-15 8:33 ` Lu Baolu
2020-04-15 5:25 ` [PATCH v2 2/7] iommu/vt-d: Multiple descriptors per qi_submit_sync() Lu Baolu
2020-04-15 8:18 ` Tian, Kevin
2020-04-15 8:30 ` Lu Baolu
2020-04-15 8:51 ` Tian, Kevin
2020-04-15 5:25 ` [PATCH v2 3/7] iommu/vt-d: debugfs: Add support to show inv queue internals Lu Baolu
2020-04-15 5:25 ` [PATCH v2 4/7] iommu/vt-d: Refactor prq_event_thread() Lu Baolu
2020-04-15 9:15 ` Tian, Kevin
2020-04-16 1:33 ` Lu Baolu
2020-04-15 5:25 ` [PATCH v2 5/7] iommu/vt-d: Save prq descriptors in an internal list Lu Baolu
2020-04-15 9:30 ` Tian, Kevin
2020-04-16 1:46 ` Lu Baolu
2020-04-17 3:25 ` Lu Baolu
2020-04-15 5:25 ` [PATCH v2 6/7] iommu/vt-d: Add page request draining support Lu Baolu
2020-04-15 11:10 ` Tian, Kevin
2020-04-16 2:19 ` Lu Baolu
2020-04-16 8:38 ` Lu Baolu
2020-04-17 2:27 ` Tian, Kevin
2020-04-15 5:25 ` [PATCH v2 7/7] iommu/vt-d: Remove redundant IOTLB flush Lu Baolu
2020-04-15 7:57 ` [PATCH v2 0/7] iommu/vt-d: Add page request draining support Tian, Kevin
2020-04-15 8:25 ` Lu Baolu [this message]
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