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From: Christoph Hellwig <hch@lst.de>
To: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: linux-sh@vger.kernel.org, linux-pci@vger.kernel.org,
	linux-remoteproc@vger.kernel.org,
	Frank Rowand <frowand.list@gmail.com>,
	Christoph Hellwig <hch@lst.de>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	linux-acpi@vger.kernel.org, loic.pallardy.st.com@lst.de,
	Ohad Ben-Cohen <ohad@wizery.com>,
	devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
	Santosh Shilimkar <ssantosh@kernel.org>,
	Nathan Chancellor <natechancellor@gmail.com>,
	linux-arm-kernel@lists.infradead.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-usb@vger.kernel.org, arnaud.pouliquen@st.com,
	linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	Jim Quinlan <james.quinlan@broadcom.com>,
	Robin Murphy <robin.murphy@arm.com>
Subject: Re: [PATCH 6/6] dma-mapping: introduce DMA range map, supplanting dma_pfn_offset
Date: Wed, 16 Sep 2020 08:13:59 +0200	[thread overview]
Message-ID: <20200916061359.GA8424@lst.de> (raw)
In-Reply-To: <20200915195501.GA3666944@xps15>

On Tue, Sep 15, 2020 at 01:55:01PM -0600, Mathieu Poirier wrote:
> That did the trick - the stm32 platform driver's probe() function completes and
> the remote processor is operatinal. 
> 
> That being said the value returned by function dma_to_pfn()
> is 0x137fff in the original code and 0xfffff with your patches applied.

Yes, that is intentional.  The old code just applied the range and got
an out of range offset, the new one reports the max offset.
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  reply	other threads:[~2020-09-16  6:14 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-14  7:33 support range based offsets in dma-direct v2 Christoph Hellwig
2020-09-14  7:33 ` [PATCH 1/6] ARM/dma-mapping: remove a __arch_page_to_dma #error Christoph Hellwig
2020-09-14  7:33 ` [PATCH 2/6] ARM/dma-mapping: remove dma_to_virt Christoph Hellwig
2020-09-14  7:33 ` [PATCH 3/6] ARM/dma-mapping: move various helpers from dma-mapping.h to dma-direct.h Christoph Hellwig
2020-09-14  7:33 ` [PATCH 4/6] ARM/keystone: move the DMA offset handling under ifdef CONFIG_ARM_LPAE Christoph Hellwig
2020-09-14  7:33 ` [PATCH 5/6] usb: don't inherity DMA properties for USB devices Christoph Hellwig
2020-09-14  7:51   ` Greg Kroah-Hartman
2020-09-14  7:33 ` [PATCH 6/6] dma-mapping: introduce DMA range map, supplanting dma_pfn_offset Christoph Hellwig
2020-09-14 23:01   ` Mathieu Poirier
2020-09-15  5:41     ` Christoph Hellwig
2020-09-15 19:55       ` Mathieu Poirier
2020-09-16  6:13         ` Christoph Hellwig [this message]
2020-09-16  6:14 support range based offsets in dma-direct v3 Christoph Hellwig
2020-09-16  6:14 ` [PATCH 6/6] dma-mapping: introduce DMA range map, supplanting dma_pfn_offset Christoph Hellwig
2020-09-16 17:36   ` Mathieu Poirier
2020-10-26 15:33   ` Geert Uytterhoeven

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