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Re: [PATCH v4 15/16] block-dma: properly take MMIO path
- To: Leon Romanovsky <leon@xxxxxxxxxx>
- From: Keith Busch <kbusch@xxxxxxxxxx>
- Date: Tue, 19 Aug 2025 12:24:42 -0600
- Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>, Leon Romanovsky <leonro@xxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxxxx>, Abdiel Janulgue <abdiel.janulgue@xxxxxxxxx>, Alexander Potapenko <glider@xxxxxxxxxx>, Alex Gaynor <alex.gaynor@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Danilo Krummrich <dakr@xxxxxxxxxx>, iommu@xxxxxxxxxxxxxxx, Jason Wang <jasowang@xxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, kasan-dev@xxxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-nvme@xxxxxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-trace-kernel@xxxxxxxxxxxxxxx, Madhavan Srinivasan <maddy@xxxxxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, Miguel Ojeda <ojeda@xxxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, rust-for-linux@xxxxxxxxxxxxxxx, Sagi Grimberg <sagi@xxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, virtualization@xxxxxxxxxxxxxxx, Will Deacon <will@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 19 Aug 2025 18:24:50 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Tue, Aug 19, 2025 at 08:36:59PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@xxxxxxxxxx>
>
> Make sure that CPU is not synced and IOMMU is configured to take
> MMIO path by providing newly introduced DMA_ATTR_MMIO attribute.
We may have a minor patch conflict here with my unmerged dma metadata
series, but not a big deal.
Looks good.
Reviewed-by: Keith Busch <kbusch@xxxxxxxxxx>
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