linux-kernel - Re: [PATCH v4 3/6] ARM: dma-mapping: Reduce struct page exposure in arch_sync

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Message-ID: <20250929173755.GD2942991@nvidia.com>
Date: Mon, 29 Sep 2025 14:37:55 -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>, iommu@...ts.linux.dev,
	Juergen Gross <jgross@...e.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Russell King <linux@...linux.org.uk>,
	Stefano Stabellini <sstabellini@...nel.org>,
	xen-devel@...ts.xenproject.org
Subject: Re: [PATCH v4 3/6] ARM: dma-mapping: Reduce struct page exposure in
 arch_sync_dma*()

On Thu, Sep 18, 2025 at 05:09:26PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@...dia.com>
> 
> As a preparation to changing from .map_page to use .map_phys DMA
> callbacks, convert arch_sync_dma*() functions to use physical addresses
> instead of struct page.
> 
> Signed-off-by: Leon Romanovsky <leonro@...dia.com>
> ---
>  arch/arm/mm/dma-mapping.c | 82 +++++++++++++++------------------------
>  1 file changed, 31 insertions(+), 51 deletions(-)

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

Jason