IOMMU pools for better scalability

This patch series follows up on the suggestion in
http://www.spinics.net/lists/sparclinux/msg13230.html

Patch 1 of the series adds the infra-structure functions for range alloc/free into (new file) lib/iomm-common.c

Patch 2 of the series makes sparc64 use this via changes to pci_sun4v.c

Sowmini Varadhan (2):
Break up monolithic iommu table/lock into finer graularity pools and
lock
Make sparc64 use scalable lib/iommu-common.c functions

 arch/sparc/kernel/pci_impl.h  |    7 ++-
 arch/sparc/kernel/pci_sun4v.c |  201 +++++++++++++++++++----------------------
 include/linux/iommu-common.h  |   70 ++++++++++++++
 lib/Makefile                  |    2 +-
 lib/iommu-common.c            |  200 ++++++++++++++++++++++++++++++++++++++++
 5 files changed, 370 insertions(+), 110 deletions(-)
 create mode 100644 include/linux/iommu-common.h
 create mode 100644 lib/iommu-common.c

Hello,

Any preliminary comments on this patch? Do I need to improve/supply something else?

--Sowmini

From: Sowmini Varadhan <[email protected]>
Date: Thu, 8 Jan 2015 14:43:27 -0500

You need to do one thing, which is be patient :-)

I've been travelling and combine that with the fact that sparc work takes a strong second seat to my networking maintainence responsibilities, the result is that sparc stuff won't get looked at for a while.