similar to: [PATCH 0/8] Convert the intel iommu driver to the dma-iommu api

On Thu, 27 Aug 2020 at 22:36, Logan Gunthorpe <logang at deltatee.com> wrote: > > > > On 2020-08-23 6:04 p.m., Tom Murphy wrote: > > I have added a check for the sg_dma_len == 0 : > > """ > > } __sgt_iter(struct scatterlist *sgl, bool dma) { > > struct sgt_iter s = { .sgp = sgl }; > > > > + if (sgl &&

On Wed, 9 Sep 2020 at 13:56, Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com> wrote: > > > On 09/09/2020 10:16, Tvrtko Ursulin wrote: > > On 08/09/2020 23:43, Tom Murphy wrote: > >> On Tue, 8 Sep 2020 at 16:56, Tvrtko Ursulin > >> <tvrtko.ursulin at linux.intel.com> wrote: > >>> On 08/09/2020 16:44, Logan Gunthorpe wrote: >

On Tue, 8 Sep 2020 at 16:56, Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com> wrote: > > > On 08/09/2020 16:44, Logan Gunthorpe wrote: > > On 2020-09-08 9:28 a.m., Tvrtko Ursulin wrote: > >>> > >>> diff --git a/drivers/gpu/drm/i915/i915_scatterlist.h > >>> b/drivers/gpu/drm/i915/i915 > >>> index b7b59328cb76..9367ac801f0c

On Thu, 2013-08-29 at 16:49 +1000, Ben Skeggs wrote: > > Additionally the current code is broken in that the upper layer in > > vm/base.c doesn't increment "pte" by the right amount. > > > > Now, if those two assertions can be made always true: > > > > - Those two functions (map_sg and map_sg_table) never deal with the > > "big"

I am working on getting the CentOS 3/Red Hat Enterprise 3 buildbot going, but I have hit a problem with the latest SVN build. Running './configure' works without any errors, (but I do note that it takes a long time on the drivers directory Makefile). Here is a copy of the configuration summary: Configuration summary: enable SSL development code: yes enable IPv6 support: yes build CGI

On Sun, 2013-08-11 at 11:02 +0200, Maarten Lankhorst wrote: > > diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/nv40.c b/drivers/gpu/drm/nouveau/core/engine/fifo/nv40.c > > index 5c7433d..c314a5f 100644 > > --- a/drivers/gpu/drm/nouveau/core/engine/fifo/nv40.c > > +++ b/drivers/gpu/drm/nouveau/core/engine/fifo/nv40.c > > @@ -190,8 +190,8 @@

On Sun, 2013-08-11 at 17:06 +1000, Benjamin Herrenschmidt wrote: > I think I found at least two cases where "12" was used where it should > have been PAGE_SHIFT (basically ttm_mem_reg->num_pages). This > is only the tip of the iceberg, so this isn't a formal patch submission, > but I would appreciate your thought as to whether the below is correct > (and thus

From: Hank Janssen <hjanssen at microsoft.com> Fixed lockup problem with bounce_buffer scatter list which caused crashes in heavy loads. Signed-off-by:Hank Janssen <hjanssen at microsoft.com> Signed-off-by:Haiyang Zhang <haiyangz at microsoft.com> --- drivers/staging/hv/storvsc_drv.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git

From: Hank Janssen <hjanssen at microsoft.com> Fixed lockup problem with bounce_buffer scatter list which caused crashes in heavy loads. Signed-off-by:Hank Janssen <hjanssen at microsoft.com> Signed-off-by:Haiyang Zhang <haiyangz at microsoft.com> --- drivers/staging/hv/storvsc_drv.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git

After switching DMA attributes to unsigned long it is easier to just compare the bits. Signed-off-by: Krzysztof Kozlowski <k.kozlowski at samsung.com> --- Documentation/DMA-API.txt | 4 +-- arch/arc/mm/dma.c | 4 +-- arch/arm/mm/dma-mapping.c | 36 ++++++++++++-------------- arch/arm/xen/mm.c

Some of the alpha pci noop dma ops are identical to the common ones. Use them. Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com> --- arch/alpha/kernel/pci-noop.c | 46 ++++---------------------------------------- 1 file changed, 4 insertions(+), 42 deletions(-) diff --git a/arch/alpha/kernel/pci-noop.c b/arch/alpha/kernel/pci-noop.c index 2b1f4a1..8e735b5e 100644 ---

Some of the alpha pci noop dma ops are identical to the common ones. Use them. Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com> Reviewed-by: Joerg Roedel <jroedel at suse.de> --- arch/alpha/kernel/pci-noop.c | 46 ++++---------------------------------------- 1 file changed, 4 insertions(+), 42 deletions(-) diff --git a/arch/alpha/kernel/pci-noop.c

Andy, to make it obvious which version is the latest, here is a branch The following changes since commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861: Linux 4.3 (2015-11-01 16:05:25 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux.git dma for you to fetch changes up to fc7f9754db6ce0c12281da4055281f731d36bdee: s390/dma: Allow

Andy, to make it obvious which version is the latest, here is a branch The following changes since commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861: Linux 4.3 (2015-11-01 16:05:25 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux.git dma for you to fetch changes up to fc7f9754db6ce0c12281da4055281f731d36bdee: s390/dma: Allow

We are going to require dma_ops for several common drivers, even for systems that do have an identity mapping. Lets provide some minimal no-op dma_ops that can be used for that purpose. Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com> --- include/linux/dma-mapping.h | 2 ++ lib/Makefile | 1 + lib/dma-noop.c | 75

(Send from a linux machine, not routed through exchange) Fixed lockup problem with bounce_buffer scatter list which caused crashes in heavy loads. Signed-off-by:Hank Janssen <hjanssen at microsoft.com Signed-off-by:Haiyang Zhang <haiyangz at microsoft.com --- drivers/staging/hv/storvsc_drv.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git

(Send from a linux machine, not routed through exchange) Fixed lockup problem with bounce_buffer scatter list which caused crashes in heavy loads. Signed-off-by:Hank Janssen <hjanssen at microsoft.com Signed-off-by:Haiyang Zhang <haiyangz at microsoft.com --- drivers/staging/hv/storvsc_drv.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git

We are going to require dma_ops for several common drivers, even for systems that do have an identity mapping. Lets provide some minimal no-op dma_ops that can be used for that purpose. Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com> --- include/linux/dma-mapping.h | 2 ++ lib/Makefile | 2 +- lib/dma-noop.c | 77

We are going to require dma_ops for several common drivers, even for systems that do have an identity mapping. Lets provide some minimal no-op dma_ops that can be used for that purpose. Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com> Reviewed-by: Joerg Roedel <jroedel at suse.de> --- include/linux/dma-mapping.h | 2 ++ lib/Makefile | 1 +

Andy, this is the next and hopefully last version. Seems to work fine when replacing the previous patches in your tree. I have some reviews/acks for patch 2 and 3. patch 1 still needs one ack. Can you replace the patches in your tree and carry them along with your changes? old introduction: ----- There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use