On Wed, Apr 24, 2019 at 04:12:22PM +0300, Leon Romanovsky wrote: > On Wed, Apr 24, 2019 at 10:04:40AM -0300, Jason Gunthorpe wrote: > > On Sun, Mar 31, 2019 at 07:44:46PM +0300, Leon Romanovsky wrote: > > > From: Ariel Levkovich <lariel@xxxxxxxxxxxx> > > > > > > This patch adds support for allocating, deallocating and registering > > > a new device memory type, STEERING_SW_ICM. > > > This memory can be allocated and used by a privileged user for direct > > > rule insertion and management of the device's steering tables. > > > > > > The type is provided by the user via the dedicated attribute in > > > the alloc_dm ioctl command. > > > > > > Signed-off-by: Ariel Levkovich <lariel@xxxxxxxxxxxx> > > > Reviewed-by: Eli Cohen <eli@xxxxxxxxxxxx> > > > Reviewed-by: Mark Bloch <markb@xxxxxxxxxxxx> > > > Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx> > > > drivers/infiniband/hw/mlx5/Kconfig | 2 +- > > > drivers/infiniband/hw/mlx5/cmd.c | 127 +++++++++++++++++++- > > > drivers/infiniband/hw/mlx5/cmd.h | 6 +- > > > drivers/infiniband/hw/mlx5/main.c | 136 +++++++++++++++++++++- > > > drivers/infiniband/hw/mlx5/mlx5_ib.h | 17 +++ > > > drivers/infiniband/hw/mlx5/mr.c | 7 ++ > > > include/uapi/rdma/mlx5_user_ioctl_verbs.h | 2 + > > > 7 files changed, 291 insertions(+), 6 deletions(-) > > > > > > diff --git a/drivers/infiniband/hw/mlx5/Kconfig b/drivers/infiniband/hw/mlx5/Kconfig > > > index 8d651c05de62..347d457fcb2f 100644 > > > +++ b/drivers/infiniband/hw/mlx5/Kconfig > > > @@ -1,6 +1,6 @@ > > > config MLX5_INFINIBAND > > > tristate "Mellanox 5th generation network adapters (ConnectX series) support" > > > - depends on NETDEVICES && ETHERNET && PCI && MLX5_CORE > > > + depends on NETDEVICES && ETHERNET && PCI && MLX5_CORE && PHYS_ADDR_T_64BIT > > > > Why do we need this? > > We are using phys_addr_t type and not u64 as an input to FW to emphasize > the caller interface, but it is different between 32 and 64 bits systems. > Such PHYS_ADDR_T_64BIT will ensure that phys_addr_t will be always 64 bits. ??? PHYS_ADDR_T should only ever be used to store a bus address - and if you are passing a bus address to/from FW then you 0 extend it on 32 bit, and range check on 64 bit. This is not a reason to force PHYS_ADDR_T_64BIT from a driver Jason
