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Date:   Mon, 7 Jun 2021 08:44:53 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Boris Ostrovsky <boris.ostrovsky@oracle.com>
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Subject: Re: [RFC PATCH V3 09/11] HV/IOMMU: Enable swiotlb bounce buffer
 for Isolation VM
Message-ID: <20210607064453.GC24478@lst.de>
References: <20210530150628.2063957-1-ltykernel@gmail.com> <20210530150628.2063957-10-ltykernel@gmail.com> <9488c114-81ad-eb67-79c0-5ed319703d3e@oracle.com> <a023ee3f-ce85-b54f-79c3-146926bf3279@gmail.com> <d6714e8b-dcb6-798b-59a4-5bb68f789564@oracle.com> <1cdf4e6e-6499-e209-d499-7ab82992040b@gmail.com> <099f311b-9614-dac5-ce05-6dad988f8a62@oracle.com>
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Honestly, we really need to do away with the concept of hypervisor-
specific swiotlb allocations and just add a hypervisor hook to remap the
"main" buffer. That should remove a lot of code and confusion not just
for Xen but also any future addition like hyperv.