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Date:   Wed, 27 Sep 2023 11:55:22 +0200
From:   Joerg Roedel <joro@8bytes.org>
To:     Niklas Schnelle <schnelle@linux.ibm.com>
Cc:     Jason Gunthorpe <jgg@ziepe.ca>,
        Matthew Rosato <mjrosato@linux.ibm.com>,
        Will Deacon <will@kernel.org>,
        Wenjia Zhang <wenjia@linux.ibm.com>,
        Robin Murphy <robin.murphy@arm.com>,
        Gerd Bayer <gbayer@linux.ibm.com>,
        Julian Ruess <julianr@linux.ibm.com>,
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        Alexandra Winter <wintera@linux.ibm.com>,
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        Vasily Gorbik <gor@linux.ibm.com>,
        Alexander Gordeev <agordeev@linux.ibm.com>,
        Christian Borntraeger <borntraeger@linux.ibm.com>,
        Sven Schnelle <svens@linux.ibm.com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
        Hector Martin <marcan@marcan.st>,
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Subject: Re: [PATCH v12 0/6] iommu/dma: s390 DMA API conversion and optimized
 IOTLB flushing
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Hi Niklas,

On Wed, Sep 27, 2023 at 10:55:23AM +0200, Niklas Schnelle wrote:
> The problem is that something seems to  be broken in the iommu/core
> branch. Regardless of whether I have my DMA API conversion on top or
> with the base iommu/core branch I can not use ConnectX-4 VFs.

Have you already tried to bisect the issue in the iommu/core branch?
The result might sched some light on the issue.

Regards,

	Joerg