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authorSagi Grimberg <sagig@mellanox.com>2014-12-11 17:04:16 +0200
committerRoland Dreier <roland@purestorage.com>2014-12-15 18:13:35 -0800
commit860f10a799c83e38a69d5a69d80da5312a4c4106 (patch)
tree32bc827e3535988397e99b11f9db5c429c09511f /drivers/infiniband/Kconfig
parentIB/core: Add support for extended query device caps (diff)
downloadlinux-dev-860f10a799c83e38a69d5a69d80da5312a4c4106.tar.xz
linux-dev-860f10a799c83e38a69d5a69d80da5312a4c4106.zip
IB/core: Add flags for on demand paging support
* Add a configuration option for enable on-demand paging support in the infiniband subsystem (CONFIG_INFINIBAND_ON_DEMAND_PAGING). In a later patch, this configuration option will select the MMU_NOTIFIER configuration option to enable mmu notifiers. * Add a flag for on demand paging (ODP) support in the IB device capabilities. * Add a flag to request ODP MR in the access flags to reg_mr. * Fail registrations done with the ODP flag when the low-level driver doesn't support this. * Change the conditions in which an MR will be writable to explicitly specify the access flags. This is to avoid making an MR writable just because it is an ODP MR. * Add a ODP capabilities to the extended query device verb. Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Shachar Raindel <raindel@mellanox.com> Signed-off-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/Kconfig')
-rw-r--r--drivers/infiniband/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig
index 77089399359b..089a2c2af329 100644
--- a/drivers/infiniband/Kconfig
+++ b/drivers/infiniband/Kconfig
@@ -38,6 +38,16 @@ config INFINIBAND_USER_MEM
depends on INFINIBAND_USER_ACCESS != n
default y
+config INFINIBAND_ON_DEMAND_PAGING
+ bool "InfiniBand on-demand paging support"
+ depends on INFINIBAND_USER_MEM
+ default y
+ ---help---
+ On demand paging support for the InfiniBand subsystem.
+ Together with driver support this allows registration of
+ memory regions without pinning their pages, fetching the
+ pages on demand instead.
+
config INFINIBAND_ADDR_TRANS
bool
depends on INFINIBAND