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| author | Sagi Grimberg <sagig@mellanox.com> | 2014-12-11 16:04:16 +0100 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2014-12-16 03:13:35 +0100 |
| commit | 860f10a799c83e38a69d5a69d80da5312a4c4106 (patch) | |
| tree | 32bc827e3535988397e99b11f9db5c429c09511f /drivers/infiniband/Kconfig | |
| parent | IB/core: Add support for extended query device caps (diff) | |
| download | linux-860f10a799c83e38a69d5a69d80da5312a4c4106.tar.xz linux-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/Kconfig | 10 |
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 |