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Date:   Fri, 06 May 2022 13:06:14 +0100
Message-ID: <87pmkq7tmx.wl-maz@kernel.org>
From:   Marc Zyngier <maz@kernel.org>
To:     Linus Walleij <linus.walleij@linaro.org>,
        Christoph Hellwig <hch@lst.de>
Cc:     Russell King <linux@armlinux.org.uk>,
        Arnd Bergmann <arnd@kernel.org>,
        Andre Przywara <andre.przywara@arm.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Gregory Clement <gregory.clement@bootlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Alan Stern <stern@rowland.harvard.edu>,
        Laurentiu Tudor <laurentiu.tudor@nxp.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Robin Murphy <robin.murphy@arm.com>,
        iommu@lists.linux-foundation.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-usb@vger.kernel.org
Subject: Re: fully convert arm to use dma-direct
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On Fri, 22 Apr 2022 22:17:20 +0100,
Linus Walleij <linus.walleij@linaro.org> wrote:
> 
> On Thu, Apr 21, 2022 at 9:42 AM Christoph Hellwig <hch@lst.de> wrote:
> 
> > arm is the last platform not using the dma-direct code for directly
> > mapped DMA.  With the dmaboune removal from Arnd we can easily switch
> > arm to always use dma-direct now (it already does for LPAE configs
> > and nommu).  I'd love to merge this series through the dma-mapping tree
> > as it gives us the opportunity for additional core dma-mapping
> > improvements.
> (...)
> 
> >  b/arch/arm/mach-footbridge/Kconfig                   |    1
> >  b/arch/arm/mach-footbridge/common.c                  |   19
> >  b/arch/arm/mach-footbridge/include/mach/dma-direct.h |    8
> >  b/arch/arm/mach-footbridge/include/mach/memory.h     |    4
> 
> I think Marc Z has a Netwinder that he can test this on. Marc?
> I have one too, just not much in my office because of parental leave.

Finally found some time to hook the machine up and throw a new kernel
at it. Booted at its usual glacial speed, so FWIW:

Tested-by: Marc Zyngier <maz@kernel.org>

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.