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Date:   Fri, 2 Dec 2022 11:24:48 -0400
From:   Jason Gunthorpe <jgg@nvidia.com>
To:     Niklas Schnelle <schnelle@linux.ibm.com>
Cc:     Robin Murphy <robin.murphy@arm.com>,
        Matthew Rosato <mjrosato@linux.ibm.com>,
        Gerd Bayer <gbayer@linux.ibm.com>, iommu@lists.linux.dev,
        Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
        Wenjia Zhang <wenjia@linux.ibm.com>,
        Pierre Morel <pmorel@linux.ibm.com>,
        linux-s390@vger.kernel.org, borntraeger@linux.ibm.com,
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        svens@linux.ibm.com, linux-kernel@vger.kernel.org,
        Julian Ruess <julianr@linux.ibm.com>
Subject: Re: [PATCH v2 7/7] iommu/s390: flush queued IOVAs on RPCIT out of
 resource indication
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On Fri, Dec 02, 2022 at 04:12:50PM +0100, Niklas Schnelle wrote:

> https://git.kernel.org/pub/scm/linux/kernel/git/niks/linux.git/commit/?h=dma_iommu_v3&id=a2aecd821fe3c5e2549946a68d8b07e05b288a9b

This patch makes sense to me, if the sync-map is optimally a
hypervisor call and the hypervisor is allowed to fail it, then
propagating the failure seems necessary.

Jason