linux-kernel - Re: [PATCH v1 03/16] dma-debug: refactor to use physical addresses for page mapping

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Message-ID: <20250806183831.GW402218@unreal>
Date: Wed, 6 Aug 2025 21:38:31 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Jason Gunthorpe <jgg@...dia.com>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
	Abdiel Janulgue <abdiel.janulgue@...il.com>,
	Alexander Potapenko <glider@...gle.com>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@....de>, Danilo Krummrich <dakr@...nel.org>,
	iommu@...ts.linux.dev, Jason Wang <jasowang@...hat.com>,
	Jens Axboe <axboe@...nel.dk>, Joerg Roedel <joro@...tes.org>,
	Jonathan Corbet <corbet@....net>, Juergen Gross <jgross@...e.com>,
	kasan-dev@...glegroups.com, Keith Busch <kbusch@...nel.org>,
	linux-block@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-nvme@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org,
	linux-trace-kernel@...r.kernel.org,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Robin Murphy <robin.murphy@....com>, rust-for-linux@...r.kernel.org,
	Sagi Grimberg <sagi@...mberg.me>,
	Stefano Stabellini <sstabellini@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	virtualization@...ts.linux.dev, Will Deacon <will@...nel.org>,
	xen-devel@...ts.xenproject.org
Subject: Re: [PATCH v1 03/16] dma-debug: refactor to use physical addresses
 for page mapping

On Wed, Aug 06, 2025 at 03:26:30PM -0300, Jason Gunthorpe wrote:
> On Mon, Aug 04, 2025 at 03:42:37PM +0300, Leon Romanovsky wrote:
> > +void debug_dma_map_phys(struct device *dev, phys_addr_t phys, size_t size,
> > +		int direction, dma_addr_t dma_addr, unsigned long attrs)
> >  {
> >  	struct dma_debug_entry *entry;
> 
> Should this patch should also absorb debug_dma_map_resource() into
> here as well and we can have the caller of dma_dma_map_resource() call
> debug_dma_map_page with ATTR_MMIO?

It is done in "[PATCH v1 11/16] dma-mapping: export new dma_*map_phys() interface".

Thanks

> 
> If not, this looks OK
> 
> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
> 
> Jason
>