Hi John,

On 22/08/18 14:44, John Garry wrote:

On 21/09/2017 09:59, Ganapatrao Kulkarni wrote:

quoted

Adding numa aware memory allocations used for iommu dma allocation and
memory allocated for SMMU stream tables, page walk tables and command 
queues.

With this patch, iperf testing on ThunderX2, with 40G NIC card on
NODE 1 PCI shown same performance(around 30% improvement) as NODE 0.

Ganapatrao Kulkarni (4):
? mm: move function alloc_pages_exact_nid out of __meminit
? numa, iommu/io-pgtable-arm: Use NUMA aware memory allocation for smmu
??? translation tables
? iommu/arm-smmu-v3: Use NUMA memory allocations for stream tables and
??? comamnd queues
? iommu/dma, numa: Use NUMA aware memory allocations in
??? __iommu_dma_alloc_pages

?drivers/iommu/arm-smmu-v3.c??? | 57 
+++++++++++++++++++++++++++++++++++++-----
?drivers/iommu/dma-iommu.c????? | 17 +++++++------
?drivers/iommu/io-pgtable-arm.c |? 4 ++-
?include/linux/gfp.h??????????? |? 2 +-
?mm/page_alloc.c??????????????? |? 3 ++-
?5 files changed, 67 insertions(+), 16 deletions(-)

Hi Ganapatrao,

Have you any plans for further work on this patchset? I have not seen 
anything since this v1 was posted+discussed.

Looks like I ended up doing the version of the io-pgtable change that I 
suggested here, which was merged recently (4b123757eeaa). Patch #3 
should also be effectively obsolete now since the SWIOTLB/dma-direct 
rework (21f237e4d085). Apparently I also started reworking patch #4 in 
my tree at some point but sidelined it - I think that was at least 
partly due to another thread[1] which made it seem less clear-cut 
whether this is always the right thing to do.

Robin.

[1] 
https://www.mail-archive.com/linux-kernel at vger.kernel.org/msg1693026.html