linux-kernel - Re: [PATCH V3 10/13] x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM

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Message-ID: <20210812122741.GC19050@lst.de>
Date:   Thu, 12 Aug 2021 14:27:41 +0200
From:   Christoph Hellwig <hch@....de>
To:     Tianyu Lan <ltykernel@...il.com>
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Subject: Re: [PATCH V3 10/13] x86/Swiotlb: Add Swiotlb bounce buffer remap
 function for HV IVM

This is still broken.  You need to make sure the actual DMA allocations
do have struct page backing.