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

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Message-ID: <20250928152030.GA136019@ravnborg.org>
Date: Sun, 28 Sep 2025 17:20:30 +0200
From: Sam Ravnborg <sam@...nborg.org>
To: Leon Romanovsky <leon@...nel.org>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
	Leon Romanovsky <leonro@...dia.com>,
	Jason Gunthorpe <jgg@...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

Hi Leon.

On Sun, Sep 28, 2025 at 05:17:25PM +0200, Sam Ravnborg wrote:
> Hi Leon.
> 
> 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(-)
> 
> It looks like you missed a few sparc32 bits:

They were included, but the patch is named sparc64,
which is why I missed it.

If you could rename the patch that would be nice.

	Sam