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From: "Jürgen Groß" <jgross@suse.com>
To: Stefano Stabellini <sstabellini@kernel.org>,
	boris.ostrovsky@oracle.com, konrad.wilk@oracle.com
Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org,
	hch@infradead.org,
	Stefano Stabellini <stefano.stabellini@xilinx.com>
Subject: Re: [PATCH v3 10/11] xen/arm: introduce phys/dma translations in xen_dma_sync_for_*
Date: Tue, 4 Aug 2020 07:35:32 +0200	[thread overview]
Message-ID: <68f244b5-86e7-4c94-7a22-f9ca53311857@suse.com> (raw)
In-Reply-To: <20200710223427.6897-10-sstabellini@kernel.org>

On 11.07.20 00:34, Stefano Stabellini wrote:
> From: Stefano Stabellini <stefano.stabellini@xilinx.com>
> 
> xen_dma_sync_for_cpu, xen_dma_sync_for_device, xen_arch_need_swiotlb are
> getting called passing dma addresses. On some platforms dma addresses
> could be different from physical addresses. Before doing any operations
> on these addresses we need to convert them back to physical addresses
> using dma_to_phys.
> 
> Move the arch_sync_dma_for_cpu and arch_sync_dma_for_device calls from
> xen_dma_sync_for_cpu/device to swiotlb-xen.c, and add a call dma_to_phys
> to do address translations there.
> 
> dma_cache_maint is fixed by the next patch.
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
> Tested-by: Corey Minyard <cminyard@mvista.com>
> Tested-by: Roman Shaposhnik <roman@zededa.com>

Acked-by: Juergen Gross <jgross@suse.com>


Juergen

WARNING: multiple messages have this Message-ID (diff)
From: "Jürgen Groß" <jgross@suse.com>
To: Stefano Stabellini <sstabellini@kernel.org>,
	boris.ostrovsky@oracle.com, konrad.wilk@oracle.com
Cc: hch@infradead.org, xen-devel@lists.xenproject.org,
	Stefano Stabellini <stefano.stabellini@xilinx.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 10/11] xen/arm: introduce phys/dma translations in xen_dma_sync_for_*
Date: Tue, 4 Aug 2020 07:35:32 +0200	[thread overview]
Message-ID: <68f244b5-86e7-4c94-7a22-f9ca53311857@suse.com> (raw)
In-Reply-To: <20200710223427.6897-10-sstabellini@kernel.org>

On 11.07.20 00:34, Stefano Stabellini wrote:
> From: Stefano Stabellini <stefano.stabellini@xilinx.com>
> 
> xen_dma_sync_for_cpu, xen_dma_sync_for_device, xen_arch_need_swiotlb are
> getting called passing dma addresses. On some platforms dma addresses
> could be different from physical addresses. Before doing any operations
> on these addresses we need to convert them back to physical addresses
> using dma_to_phys.
> 
> Move the arch_sync_dma_for_cpu and arch_sync_dma_for_device calls from
> xen_dma_sync_for_cpu/device to swiotlb-xen.c, and add a call dma_to_phys
> to do address translations there.
> 
> dma_cache_maint is fixed by the next patch.
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
> Tested-by: Corey Minyard <cminyard@mvista.com>
> Tested-by: Roman Shaposhnik <roman@zededa.com>

Acked-by: Juergen Gross <jgross@suse.com>


Juergen


  reply	other threads:[~2020-08-04  5:35 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-10 22:34 [PATCH v3 00/11] fix swiotlb-xen for RPi4 Stefano Stabellini
2020-07-10 22:34 ` Stefano Stabellini
2020-07-10 22:34 ` [PATCH v3 01/11] swiotlb-xen: use vmalloc_to_page on vmalloc virt addresses Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-07-10 22:34 ` [PATCH v3 02/11] swiotlb-xen: remove start_dma_addr Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-07-10 22:34 ` [PATCH v3 03/11] swiotlb-xen: add struct device * parameter to xen_phys_to_bus Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-07-10 22:34 ` [PATCH v3 04/11] swiotlb-xen: add struct device * parameter to xen_bus_to_phys Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-07-10 22:34 ` [PATCH v3 05/11] swiotlb-xen: add struct device * parameter to xen_dma_sync_for_cpu Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-07-10 22:34 ` [PATCH v3 06/11] swiotlb-xen: add struct device * parameter to xen_dma_sync_for_device Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-07-10 22:34 ` [PATCH v3 07/11] swiotlb-xen: add struct device * parameter to is_xen_swiotlb_buffer Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-07-10 22:34 ` [PATCH v3 08/11] swiotlb-xen: remove XEN_PFN_PHYS Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-08-04  5:33   ` Jürgen Groß
2020-08-04  5:33     ` Jürgen Groß
2020-07-10 22:34 ` [PATCH v3 09/11] swiotlb-xen: introduce phys_to_dma/dma_to_phys translations Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-08-04  5:34   ` Jürgen Groß
2020-08-04  5:34     ` Jürgen Groß
2020-07-10 22:34 ` [PATCH v3 10/11] xen/arm: introduce phys/dma translations in xen_dma_sync_for_* Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-08-04  5:35   ` Jürgen Groß [this message]
2020-08-04  5:35     ` Jürgen Groß
2020-07-10 22:34 ` [PATCH v3 11/11] xen/arm: call dma_to_phys on the dma_addr_t parameter of dma_cache_maint Stefano Stabellini
2020-07-10 22:34   ` Stefano Stabellini
2020-08-04  5:56 ` [PATCH v3 00/11] fix swiotlb-xen for RPi4 Jürgen Groß
2020-08-04  5:56   ` Jürgen Groß
2020-08-04 15:52   ` Stefano Stabellini
2020-08-04 15:52     ` Stefano Stabellini

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