From: Jesper Dangaard Brouer <brouer@redhat.com>
To: intel-wired-lan@osuosl.org
Subject: [Intel-wired-lan] [net-next PATCH 00/27] Add support for DMA writable pages being writable by the network stack
Date: Wed, 26 Oct 2016 17:45:42 +0200 [thread overview]
Message-ID: <20161026174542.334798db@redhat.com> (raw)
In-Reply-To: <20161025153220.4815.61239.stgit@ahduyck-blue-test.jf.intel.com>
On Tue, 25 Oct 2016 11:36:48 -0400
Alexander Duyck <alexander.h.duyck@intel.com> wrote:
> The first 22 patches in the set add support for the DMA attribute
> DMA_ATTR_SKIP_CPU_SYNC on multiple platforms/architectures. This is needed
> so that we can flag the calls to dma_map/unmap_page so that we do not
> invalidate cache lines that do not currently belong to the device. Instead
> we have to take care of this in the driver via a call to
> sync_single_range_for_cpu prior to freeing the Rx page.
>
> Patch 23 adds support for dma_map_page_attrs and dma_unmap_page_attrs so
> that we can unmap and map a page using the DMA_ATTR_SKIP_CPU_SYNC
> attribute.
>
> Patch 24 adds support for freeing a page that has multiple references being
> held by a single caller. This way we can free page fragments that were
> allocated by a given driver.
>
> The last 3 patches use these updates in the igb driver to allow for us to
> reimpelement the use of build_skb.
>
> My hope is to get the series accepted into the net-next tree as I have a
> number of other Intel drivers I could then begin updating once these
> patches are accepted.
>
> v1: Split out changes DMA_ERROR_CODE fix for swiotlb-xen
> Minor fixes based on issues found by kernel build bot
> Few minor changes for issues found on code review
> Added Acked-by for patches that were acked and not changed
I really appreciate you are doing this work Alex, thanks! And I do
think it fits into my page pool plans. Thanks!
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
Author of http://www.iptv-analyzer.org
LinkedIn: http://www.linkedin.com/in/brouer
WARNING: multiple messages have this Message-ID (diff)
From: Jesper Dangaard Brouer <brouer@redhat.com>
To: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
davem@davemloft.net, brouer@redhat.com
Subject: Re: [net-next PATCH 00/27] Add support for DMA writable pages being writable by the network stack
Date: Wed, 26 Oct 2016 17:45:42 +0200 [thread overview]
Message-ID: <20161026174542.334798db@redhat.com> (raw)
In-Reply-To: <20161025153220.4815.61239.stgit@ahduyck-blue-test.jf.intel.com>
On Tue, 25 Oct 2016 11:36:48 -0400
Alexander Duyck <alexander.h.duyck@intel.com> wrote:
> The first 22 patches in the set add support for the DMA attribute
> DMA_ATTR_SKIP_CPU_SYNC on multiple platforms/architectures. This is needed
> so that we can flag the calls to dma_map/unmap_page so that we do not
> invalidate cache lines that do not currently belong to the device. Instead
> we have to take care of this in the driver via a call to
> sync_single_range_for_cpu prior to freeing the Rx page.
>
> Patch 23 adds support for dma_map_page_attrs and dma_unmap_page_attrs so
> that we can unmap and map a page using the DMA_ATTR_SKIP_CPU_SYNC
> attribute.
>
> Patch 24 adds support for freeing a page that has multiple references being
> held by a single caller. This way we can free page fragments that were
> allocated by a given driver.
>
> The last 3 patches use these updates in the igb driver to allow for us to
> reimpelement the use of build_skb.
>
> My hope is to get the series accepted into the net-next tree as I have a
> number of other Intel drivers I could then begin updating once these
> patches are accepted.
>
> v1: Split out changes DMA_ERROR_CODE fix for swiotlb-xen
> Minor fixes based on issues found by kernel build bot
> Few minor changes for issues found on code review
> Added Acked-by for patches that were acked and not changed
I really appreciate you are doing this work Alex, thanks! And I do
think it fits into my page pool plans. Thanks!
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
Author of http://www.iptv-analyzer.org
LinkedIn: http://www.linkedin.com/in/brouer
--
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WARNING: multiple messages have this Message-ID (diff)
From: Jesper Dangaard Brouer <brouer@redhat.com>
To: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
davem@davemloft.net, brouer@redhat.com
Subject: Re: [net-next PATCH 00/27] Add support for DMA writable pages being writable by the network stack
Date: Wed, 26 Oct 2016 17:45:42 +0200 [thread overview]
Message-ID: <20161026174542.334798db@redhat.com> (raw)
In-Reply-To: <20161025153220.4815.61239.stgit@ahduyck-blue-test.jf.intel.com>
On Tue, 25 Oct 2016 11:36:48 -0400
Alexander Duyck <alexander.h.duyck@intel.com> wrote:
> The first 22 patches in the set add support for the DMA attribute
> DMA_ATTR_SKIP_CPU_SYNC on multiple platforms/architectures. This is needed
> so that we can flag the calls to dma_map/unmap_page so that we do not
> invalidate cache lines that do not currently belong to the device. Instead
> we have to take care of this in the driver via a call to
> sync_single_range_for_cpu prior to freeing the Rx page.
>
> Patch 23 adds support for dma_map_page_attrs and dma_unmap_page_attrs so
> that we can unmap and map a page using the DMA_ATTR_SKIP_CPU_SYNC
> attribute.
>
> Patch 24 adds support for freeing a page that has multiple references being
> held by a single caller. This way we can free page fragments that were
> allocated by a given driver.
>
> The last 3 patches use these updates in the igb driver to allow for us to
> reimpelement the use of build_skb.
>
> My hope is to get the series accepted into the net-next tree as I have a
> number of other Intel drivers I could then begin updating once these
> patches are accepted.
>
> v1: Split out changes DMA_ERROR_CODE fix for swiotlb-xen
> Minor fixes based on issues found by kernel build bot
> Few minor changes for issues found on code review
> Added Acked-by for patches that were acked and not changed
I really appreciate you are doing this work Alex, thanks! And I do
think it fits into my page pool plans. Thanks!
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
Author of http://www.iptv-analyzer.org
LinkedIn: http://www.linkedin.com/in/brouer
next prev parent reply other threads:[~2016-10-26 15:45 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-25 15:36 [Intel-wired-lan] [net-next PATCH 00/27] Add support for DMA writable pages being writable by the network stack Alexander Duyck
2016-10-25 15:36 ` Alexander Duyck
2016-10-25 15:36 ` Alexander Duyck
2016-10-25 15:36 ` [Intel-wired-lan] [net-next PATCH 01/27] swiotlb: Drop unused function swiotlb_map_sg Alexander Duyck
2016-10-25 15:36 ` Alexander Duyck
2016-10-25 15:36 ` Alexander Duyck
2016-10-25 15:36 ` [Intel-wired-lan] [net-next PATCH 02/27] swiotlb-xen: Enforce return of DMA_ERROR_CODE in mapping function Alexander Duyck
2016-10-25 15:36 ` Alexander Duyck
2016-10-25 15:36 ` Alexander Duyck
2016-10-28 17:35 ` [Intel-wired-lan] " Konrad Rzeszutek Wilk
2016-10-28 17:35 ` Konrad Rzeszutek Wilk
2016-10-28 17:35 ` Konrad Rzeszutek Wilk
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 03/27] swiotlb: Add support for DMA_ATTR_SKIP_CPU_SYNC Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-28 17:34 ` [Intel-wired-lan] " Konrad Rzeszutek Wilk
2016-10-28 17:34 ` Konrad Rzeszutek Wilk
2016-10-28 17:34 ` Konrad Rzeszutek Wilk
2016-10-28 18:09 ` [Intel-wired-lan] " Alexander Duyck
2016-10-28 18:09 ` Alexander Duyck
2016-10-28 18:09 ` Alexander Duyck
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 04/27] arch/arc: Add option to skip sync on DMA mapping Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 22:00 ` [Intel-wired-lan] " Vineet Gupta
2016-10-25 22:00 ` Vineet Gupta
2016-10-25 22:00 ` Vineet Gupta
2016-10-25 22:00 ` Vineet Gupta
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 05/27] arch/arm: Add option to skip sync on DMA map and unmap Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 06/27] arch/avr32: Add option to skip sync on DMA map Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 07/27] arch/blackfin: " Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 08/27] arch/c6x: Add option to skip sync on DMA map and unmap Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 09/27] arch/frv: Add option to skip sync on DMA map Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 10/27] arch/hexagon: Add option to skip DMA sync as a part of mapping Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 11/27] arch/m68k: " Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 12/27] arch/metag: Add option to skip DMA sync as a part of map and unmap Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` [Intel-wired-lan] [net-next PATCH 13/27] arch/microblaze: " Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:37 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 14/27] arch/mips: " Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 15/27] arch/nios2: " Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 16/27] arch/openrisc: Add option to skip DMA sync as a part of mapping Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 17/27] arch/parisc: Add option to skip DMA sync as a part of map and unmap Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 18/27] arch/powerpc: Add option to skip DMA sync as a part of mapping Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 19/27] arch/sh: " Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 20/27] arch/sparc: Add option to skip DMA sync as a part of map and unmap Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 21/27] arch/tile: " Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 22/27] arch/xtensa: Add option to skip DMA sync as a part of mapping Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 23/27] dma: Add calls for dma_map_page_attrs and dma_unmap_page_attrs Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` [Intel-wired-lan] [net-next PATCH 24/27] mm: Add support for releasing multiple instances of a page Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:38 ` Alexander Duyck
2016-10-25 15:39 ` [Intel-wired-lan] [net-next PATCH 25/27] igb: Update driver to make use of DMA_ATTR_SKIP_CPU_SYNC Alexander Duyck
2016-10-25 15:39 ` Alexander Duyck
2016-10-25 15:39 ` Alexander Duyck
2016-10-26 17:21 ` [Intel-wired-lan] " Jeff Kirsher
2016-10-26 17:21 ` Jeff Kirsher
2016-10-25 15:39 ` [Intel-wired-lan] [net-next PATCH 26/27] igb: Update code to better handle incrementing page count Alexander Duyck
2016-10-25 15:39 ` Alexander Duyck
2016-10-25 15:39 ` Alexander Duyck
2016-10-26 17:21 ` [Intel-wired-lan] " Jeff Kirsher
2016-10-26 17:21 ` Jeff Kirsher
2016-10-25 15:39 ` [Intel-wired-lan] [net-next PATCH 27/27] igb: Revert "igb: Revert support for build_skb in igb" Alexander Duyck
2016-10-25 15:39 ` Alexander Duyck
2016-10-25 15:39 ` Alexander Duyck
2016-10-26 17:22 ` [Intel-wired-lan] " Jeff Kirsher
2016-10-26 17:22 ` Jeff Kirsher
2016-10-26 15:45 ` Jesper Dangaard Brouer [this message]
2016-10-26 15:45 ` [net-next PATCH 00/27] Add support for DMA writable pages being writable by the network stack Jesper Dangaard Brouer
2016-10-26 15:45 ` Jesper Dangaard Brouer
2016-10-28 15:48 ` [Intel-wired-lan] " Alexander Duyck
2016-10-28 15:48 ` Alexander Duyck
2016-10-28 15:48 ` Alexander Duyck
2016-10-28 17:06 ` [Intel-wired-lan] " David Miller
2016-10-28 17:06 ` David Miller
2016-10-28 17:06 ` David Miller
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