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

From: Christoph Hellwig <[email-masked]>
Date: Thu, 12 Aug 2021 14:27:41 +0200

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