linux-kernel - Re: [PATCH v1 9/9] dma-mapping: remove unused map

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Message-ID: <20251003161825.GH3360665@nvidia.com>
Date: Fri, 3 Oct 2025 13:18:25 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Leon Romanovsky <leon@...nel.org>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
	Leon Romanovsky <leonro@...dia.com>,
	Andreas Larsson <andreas@...sler.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"David S. Miller" <davem@...emloft.net>,
	Geoff Levand <geoff@...radead.org>, Helge Deller <deller@....de>,
	Ingo Molnar <mingo@...hat.com>, iommu@...ts.linux.dev,
	"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
	Jason Wang <jasowang@...hat.com>, Juergen Gross <jgross@...e.com>,
	linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Matt Turner <mattst88@...il.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Richard Henderson <richard.henderson@...aro.org>,
	sparclinux@...r.kernel.org,
	Stefano Stabellini <sstabellini@...nel.org>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	virtualization@...ts.linux.dev, x86@...nel.org,
	xen-devel@...ts.xenproject.org, Magnus Lindholm <linmag7@...il.com>
Subject: Re: [PATCH v1 9/9] dma-mapping: remove unused map_page callback

On Sun, Sep 28, 2025 at 06:02:29PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@...dia.com>
> 
> After conversion of arch code to use physical address mapping,
> there are no users of .map_page() and .unmap_page() callbacks,
> so let's remove them.
> 
> Signed-off-by: Leon Romanovsky <leonro@...dia.com>
> ---
>  include/linux/dma-map-ops.h |  7 -------
>  kernel/dma/mapping.c        | 12 ------------
>  kernel/dma/ops_helpers.c    |  8 +-------
>  3 files changed, 1 insertion(+), 26 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason