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...include/linux/dma-mapping.h | 2 ++ lib/Makefile | 1 + lib/dma-noop.c | 75 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 78 insertions(+) create mode 100644 lib/dma-noop.c diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index ac07ff0..7912f54 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -66,6 +66,8 @@ struct dma_map_ops { int is_phys; }; +extern struct dma_map_ops dma_noop_ops; + #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) #define DMA_MASK_NONE 0x0ULL diff --gi...

...a-mapping.h | 2 ++ lib/Makefile | 2 +- lib/dma-noop.c | 77 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 80 insertions(+), 1 deletion(-) create mode 100644 lib/dma-noop.c diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index ac07ff0..7912f54 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -66,6 +66,8 @@ struct dma_map_ops { int is_phys; }; +extern struct dma_map_ops dma_noop_ops; + #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) #define DMA_MASK_NONE 0x0ULL diff --gi...

...include/linux/dma-mapping.h | 2 ++ lib/Makefile | 1 + lib/dma-noop.c | 75 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 78 insertions(+) create mode 100644 lib/dma-noop.c diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index ac07ff0..7912f54 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -66,6 +66,8 @@ struct dma_map_ops { int is_phys; }; +extern struct dma_map_ops dma_noop_ops; + #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) #define DMA_MASK_NONE 0x0ULL diff --gi...

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

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

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

here is the 2nd version of providing an DMA API for s390. There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use the dma API (Andy). At kernel summit we concluded that we want to use the same code on all platforms, whereever possible, so having a dummy dma_op might be the easiest solution to keep virtio-ccw as similar as possible to

here is the 2nd version of providing an DMA API for s390. There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use the dma API (Andy). At kernel summit we concluded that we want to use the same code on all platforms, whereever possible, so having a dummy dma_op might be the easiest solution to keep virtio-ccw as similar as possible to