Re: [PATCH intel_iommu 0/7] FLTS for VT-d

[CLEMENT MATHIEU--DRIF <clement.mathieu--drif@eviden.com>]

On 02/06/2024 16:10, Michael S. Tsirkin wrote:
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> On Mon, Apr 22, 2024 at 03:52:52PM +0000, CLEMENT MATHIEU--DRIF wrote:
>> This series is the first of a list that add support for SVM in the Intel IOMMU.
>>
>> Here, we implement support for first-stage translation in VT-d.
>> The PASID-based IOTLB invalidation is also added in this series as it is a
>> requirement of FLTS.
>>
>> The last patch introduces the 'flts' option to enable the feature from
>> the command line.
>> Once enabled, several drivers of the Linux kernel use this feature.
>>
>> This work is based on the VT-d specification version 4.1 (March 2023)
>>
>> Here is a link to a GitHub repository where you can find the following elements :
>>      - Qemu with all the patches for SVM
>>          - ATS
>>          - PRI
>>          - PASID based IOTLB invalidation
>>          - Device IOTLB invalidations
>>          - First-stage translations
>>          - Requests with already translated addresses
>>      - A demo device
>>      - A simple driver for the demo device
>>      - A userspace program (for testing and demonstration purposes)
>>
>> https://github.com/BullSequana/Qemu-in-guest-SVM-demo
> Pls post v2 addressing minor comments so far.

Hi Michael,

The comments have been addressed and I rebased my work for SVM support
on Zhenzhong's FLTS implementation (who cherry picked patches from this
series)

You can see all the changes in my series called 'ATS support for VT-d'
(posted on May 21st). I also posted the PRI series on May 30th.

I'm going to post a new version of ATS today to address Philippe's
comment on patch called 'make types match'

Tell me if you want me to change something

 >cmd

>
>> Clément Mathieu--Drif (7):
>>    intel_iommu: fix FRCD construction macro.
>>    intel_iommu: rename slpte to pte before adding FLTS
>>    intel_iommu: make types match
>>    intel_iommu: add support for first-stage translation
>>    intel_iommu: extract device IOTLB invalidation logic
>>    intel_iommu: add PASID-based IOTLB invalidation
>>    intel_iommu: add a CLI option to enable FLTS
>>
>>   hw/i386/intel_iommu.c          | 655 ++++++++++++++++++++++++++-------
>>   hw/i386/intel_iommu_internal.h | 114 ++++--
>>   include/hw/i386/intel_iommu.h  |   3 +-
>>   3 files changed, 609 insertions(+), 163 deletions(-)
>>
>> --
>> 2.44.0