This patch adds functions to retry TID RDMA READ request. Since TID RDMA
READ request could be retried from any segment boundary, it requires
a number of tracking fields in various structures and those fields
should be reset properly. The qp->s_num_rd_atomic field is reset before
retry and therefore should be incremented for each new or retried
RDMA READ or atomic request.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit adds the TID RDMA READ pointers to the receiving opcode
handlers. It also adds TID RDMA READ header sizes to header size table.
A function to print the RHF EFLAGS errors is created so that it can be
shared by both IB and TID RDMA receiving functions.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This patch adds the functions to receive TID RDMA READ response. The TID
resource information in the KDETH packet header will direct the hardware
to deliver the packet payload to the user buffer automatically and the
software will handle the packet header for the last packet of a segment
as all other packet headers are suppressed by default. The TID entries
will be freed when all packets for a segment have been received. This
patch also adds the functions to handle KDETH eflag errors, including
flow sequence and generation errors, when a TID RDMA READ response
packet is received . The flow sequence error can be recovered by software
checking of the flow sequence and will disappear when the hardware flow
is programmed with a new generation number.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This patch adds the function to build TID RDMA READ response packet.
The previously received TID resource information will be used to
build the KDETH packet, which will direct the delivery of packet payload
by hardware.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This patch adds the functions to receive TID RDMA READ request. The TID
resource information will be stored and tracked. Duplicate request
will also be handled properly.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
All TID RDMA packets are in KDETH packet format and therefore the
PbcInsertHcrc must be set properly before sending the packet to
hardware. Otherwise, the packets will be dropped by the receiver.
By default, HCRC is not inserted for 9B packets without KDETH, and
this patch adds that back for TID RDMA packets.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This patch adds the helper functions to build the TID RDMA READ request
on the requester side. The key is to allocate TID resources (TID flow
and TID entries) and send the resource information to the responder side
along with the read request. Since the TID resources are limited, each
TID RDMA READ request has to be split into segments with a default
segment size of 256K. A software flow is allocated to track the data
transaction for each segment. The work request opcode, packet opcode, and
packet formats for TID RDMA READ protocol are also defined in this patch.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This patch adds the static trace for the flow and TID management
functions to help debugging in the filed.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This patch adds the counter n_tidwait to count the number of times the
TID resource allocator has to wait for TID resources.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
TID entries are used by hfi1 hardware to receive data payload from
incoming packets directly into a user buffer and thus avoid data copying
by software. This patch implements the functions for TID allocation,
freeing, and programming TID RcvArray entries in hardware for kernel
clients. TID entries are managed via lists of TID groups similar to PSM.
Furthermore, to track TID resource allocation for each request, software
flows are also allocated and freed as needed. Since software flows
consume large amount of memory for tracking TID allocation and freeing,
it is generally desirable to allocate them dynamically in the send queue
and only for TID RDMA requests, but pre-allocate them for receive queue
because the send queue could have thousands of entries while the receive
queue has only a limited number of entries.
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
The hfi1 hardware flow is a hardware flow-control mechanism for a KDETH
data packet that is received on a hfi1 port. It validates the packet by
checking both the generation and sequence. Each QP that uses the TID RDMA
mechanism will allocate a hardware flow from its receiving context for
any incoming KDETH data packets.
This patch implements:
(1) a function to allocate hardware flow
(2) a function to free hardware flow
(3) a function to initialize hardware flow generation for a receiving
context
(4) a wait mechanism if the hardware flow is not available
(4) a function to remove the qp from the wait queue for hardware flow
when the qp is reset or destroyed.
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This patch moves some RC helper functions into a header file so that
they can be called from both RC and TID RDMA functions. In addition,
a common function for rewinding a request is created in rdmavt so that
it can be shared between qib and hfi1 driver.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This patch adds the static trace to the OPFN code and moves tid related
static trace code into a new header file.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
OPFN parameter negotiation allows a pair of connected RC QPs to exchange
a set of parameters in succession. This negotiation does not commence
till the first ULP request. Because OPFN operations are operations
private to the driver, they do not generate user completions or put the
QP into error when they run out of retries. This patch integrates the
OPFN protocol into the transactions of an RC QP.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
The OPFN protocol uses the COMPARE_SWAP request to exchange data
between the requester and the responder and therefore needs to
be stored in the QP's s_ack_queue when the request is received
on the responder side. However, because the user does not know
anything about the OPFN protocol, this extra entry in the
queue cannot be advertised to the user. This patch adds an extra
entry in a QP's s_ack_queue.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
OPFN allows a pair of connected RC QPs to exchange a set of parameters
in succession. The parameter exchange itself is done using the IB compare
and swap request with a special virtual address. The request is triggered
using a reserved IB work request opcode. This patch implements the OPFN
interface to initialize, start, process, and reset the OPFN request.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This patch adds the OPFN helper functions to initialize, encode, decode,
and reset OPFN parameters for the TID RDMA feature.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
OPFN (Omni Path Feature Negotiation) support discovery allows a RC QP to
announce that it supports OPFN and also discover if OPFN is supported by
the peer QP. OPFN parameter negotiation is skipped unless OPFN support is
first discovered. OPFN support is announced by claiming what was
the reserved bit in dword 1 of OmniPath modified base transport header
in requests and responses.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Several locations for manipulating sges use an open coded sequence
that is covered by helper functions.
Use the appropriate helper functions.
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Sge sizing is done in several places using an open coded method.
This can cause maintenance issues. The open coded method is
encapsulated in a helper routine. The helper was introduced with
commit:
1198fcea8a ("IB/hfi1, rdmavt: Move SGE state helper routines into
rdmavt")
Update all call sites that have the open coded path with the helper
routine.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Yishai Hadas says:
Enable DEVX asynchronous query commands
This series enables querying a DEVX object in an asynchronous mode.
The userspace application won't block when calling the firmware and it will be
able to get the response back once that it will be ready.
To enable the above functionality:
- DEVX asynchronous command completion FD object was introduced.
- The applicable file operations were implemented to enable using it by
the user application.
- Query asynchronous method was added to the DEVX object, it will call the
firmware asynchronously and manages the response on the given input FD.
- Hot unplug support was added for the FD to work properly upon
unbind/disassociate.
- mlx5 core fence for asynchronous commands was implemented and used to
prevent racing upon unbind/disassociate.
This branch is based on mlx5-next & v5.0-rc2 due to dependencies, from
git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
* branch 'devx-async':
IB/mlx5: Implement DEVX hot unplug for async command FD
IB/mlx5: Implement the file ops of DEVX async command FD
IB/mlx5: Introduce async DEVX obj query API
IB/mlx5: Introduce MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The macro was just making things harder to follow, and audit, so remove
it and call debugfs_create_file() directly. Also, the macro did not
need to warn about the call failing as no one should ever care about any
debugfs functions failing.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Introduce and use rdma_device_to_ibdev() API for those drivers which are
registering one sysfs group and also use in ib_core.
In subsequent patch, device->provider_ibdev one-to-one mapping is no
longer holds true during accessing sysfs entries.
Therefore, introduce an API rdma_device_to_ibdev() that provides such
information.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Most provider routines are callback routines which ib core invokes.
_callback suffix doesn't convey information about when such callback is
invoked. Therefore, rename port_callback to init_port.
Additionally, store the init_port function pointer in ib_device_ops, so
that it can be accessed in subsequent patches when binding rdma device to
net namespace.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.
This change was generated with the following Coccinelle SmPL patch:
@ replace_dma_zalloc_coherent @
expression dev, size, data, handle, flags;
@@
-dma_zalloc_coherent(dev, size, handle, flags)
+dma_alloc_coherent(dev, size, handle, flags)
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
[hch: re-ran the script on the latest tree]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
of the user address range verification function since we got rid of the
old racy i386-only code to walk page tables by hand.
It existed because the original 80386 would not honor the write protect
bit when in kernel mode, so you had to do COW by hand before doing any
user access. But we haven't supported that in a long time, and these
days the 'type' argument is a purely historical artifact.
A discussion about extending 'user_access_begin()' to do the range
checking resulted this patch, because there is no way we're going to
move the old VERIFY_xyz interface to that model. And it's best done at
the end of the merge window when I've done most of my merges, so let's
just get this done once and for all.
This patch was mostly done with a sed-script, with manual fix-ups for
the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.
There were a couple of notable cases:
- csky still had the old "verify_area()" name as an alias.
- the iter_iov code had magical hardcoded knowledge of the actual
values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
really used it)
- microblaze used the type argument for a debug printout
but other than those oddities this should be a total no-op patch.
I tried to fix up all architectures, did fairly extensive grepping for
access_ok() uses, and the changes are trivial, but I may have missed
something. Any missed conversion should be trivially fixable, though.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge misc updates from Andrew Morton:
- large KASAN update to use arm's "software tag-based mode"
- a few misc things
- sh updates
- ocfs2 updates
- just about all of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (167 commits)
kernel/fork.c: mark 'stack_vm_area' with __maybe_unused
memcg, oom: notify on oom killer invocation from the charge path
mm, swap: fix swapoff with KSM pages
include/linux/gfp.h: fix typo
mm/hmm: fix memremap.h, move dev_page_fault_t callback to hmm
hugetlbfs: Use i_mmap_rwsem to fix page fault/truncate race
hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization
memory_hotplug: add missing newlines to debugging output
mm: remove __hugepage_set_anon_rmap()
include/linux/vmstat.h: remove unused page state adjustment macro
mm/page_alloc.c: allow error injection
mm: migrate: drop unused argument of migrate_page_move_mapping()
blkdev: avoid migration stalls for blkdev pages
mm: migrate: provide buffer_migrate_page_norefs()
mm: migrate: move migrate_page_lock_buffers()
mm: migrate: lock buffers before migrate_page_move_mapping()
mm: migration: factor out code to compute expected number of page references
mm, page_alloc: enable pcpu_drain with zone capability
kmemleak: add config to select auto scan
mm/page_alloc.c: don't call kasan_free_pages() at deferred mem init
...
This has been a fairly typical cycle, with the usual sorts of driver
updates. Several series continue to come through which improve and
modernize various parts of the core code, and we finally are starting to
get the uAPI command interface cleaned up.
- Various driver fixes for bnxt_re, cxgb3/4, hfi1, hns, i40iw, mlx4, mlx5,
qib, rxe, usnic
- Rework the entire syscall flow for uverbs to be able to run over
ioctl(). Finally getting past the historic bad choice to use write()
for command execution
- More functional coverage with the mlx5 'devx' user API
- Start of the HFI1 series for 'TID RDMA'
- SRQ support in the hns driver
- Support for new IBTA defined 2x lane widths
- A big series to consolidate all the driver function pointers into
a big struct and have drivers provide a 'static const' version of the
struct instead of open coding initialization
- New 'advise_mr' uAPI to control device caching/loading of page tables
- Support for inline data in SRPT
- Modernize how umad uses the driver core and creates cdev's and sysfs
files
- First steps toward removing 'uobject' from the view of the drivers
-----BEGIN PGP SIGNATURE-----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=T0p1
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"This has been a fairly typical cycle, with the usual sorts of driver
updates. Several series continue to come through which improve and
modernize various parts of the core code, and we finally are starting
to get the uAPI command interface cleaned up.
- Various driver fixes for bnxt_re, cxgb3/4, hfi1, hns, i40iw, mlx4,
mlx5, qib, rxe, usnic
- Rework the entire syscall flow for uverbs to be able to run over
ioctl(). Finally getting past the historic bad choice to use
write() for command execution
- More functional coverage with the mlx5 'devx' user API
- Start of the HFI1 series for 'TID RDMA'
- SRQ support in the hns driver
- Support for new IBTA defined 2x lane widths
- A big series to consolidate all the driver function pointers into a
big struct and have drivers provide a 'static const' version of the
struct instead of open coding initialization
- New 'advise_mr' uAPI to control device caching/loading of page
tables
- Support for inline data in SRPT
- Modernize how umad uses the driver core and creates cdev's and
sysfs files
- First steps toward removing 'uobject' from the view of the drivers"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (193 commits)
RDMA/srpt: Use kmem_cache_free() instead of kfree()
RDMA/mlx5: Signedness bug in UVERBS_HANDLER()
IB/uverbs: Signedness bug in UVERBS_HANDLER()
IB/mlx5: Allocate the per-port Q counter shared when DEVX is supported
IB/umad: Start using dev_groups of class
IB/umad: Use class_groups and let core create class file
IB/umad: Refactor code to use cdev_device_add()
IB/umad: Avoid destroying device while it is accessed
IB/umad: Simplify and avoid dynamic allocation of class
IB/mlx5: Fix wrong error unwind
IB/mlx4: Remove set but not used variable 'pd'
RDMA/iwcm: Don't copy past the end of dev_name() string
IB/mlx5: Fix long EEH recover time with NVMe offloads
IB/mlx5: Simplify netdev unbinding
IB/core: Move query port to ioctl
RDMA/nldev: Expose port_cap_flags2
IB/core: uverbs copy to struct or zero helper
IB/rxe: Reuse code which sets port state
IB/rxe: Make counters thread safe
IB/mlx5: Use the correct commands for UMEM and UCTX allocation
...
Patch series "mmu notifier contextual informations", v2.
This patchset adds contextual information, why an invalidation is
happening, to mmu notifier callback. This is necessary for user of mmu
notifier that wish to maintains their own data structure without having to
add new fields to struct vm_area_struct (vma).
For instance device can have they own page table that mirror the process
address space. When a vma is unmap (munmap() syscall) the device driver
can free the device page table for the range.
Today we do not have any information on why a mmu notifier call back is
happening and thus device driver have to assume that it is always an
munmap(). This is inefficient at it means that it needs to re-allocate
device page table on next page fault and rebuild the whole device driver
data structure for the range.
Other use case beside munmap() also exist, for instance it is pointless
for device driver to invalidate the device page table when the
invalidation is for the soft dirtyness tracking. Or device driver can
optimize away mprotect() that change the page table permission access for
the range.
This patchset enables all this optimizations for device drivers. I do not
include any of those in this series but another patchset I am posting will
leverage this.
The patchset is pretty simple from a code point of view. The first two
patches consolidate all mmu notifier arguments into a struct so that it is
easier to add/change arguments. The last patch adds the contextual
information (munmap, protection, soft dirty, clear, ...).
This patch (of 3):
To avoid having to change many callback definition everytime we want to
add a parameter use a structure to group all parameters for the
mmu_notifier invalidate_range_start/end callback. No functional changes
with this patch.
[akpm@linux-foundation.org: fix drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c kerneldoc]
Link: http://lkml.kernel.org/r/20181205053628.3210-2-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Jason Gunthorpe <jgg@mellanox.com> [infiniband]
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Ross Zwisler <zwisler@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krcmar <rkrcmar@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Christian Koenig <christian.koenig@amd.com>
Cc: Felix Kuehling <felix.kuehling@amd.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Introduce a 'flags' field to create address handle callback and add a flag
that marks whether the callback is executed in an atomic context or not.
This will allow drivers to wait for completion instead of polling for it
when it is allowed.
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Initialize ib_device_ops with the supported operations using
ib_set_device_ops().
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Commit 4e045572e2 ("IB/hfi1: Add unique txwait_lock for txreq events")
laid the ground work to support per resource waiting locking.
This patch adds that with a lock unique to each sdma engine and pio
sendcontext and makes necessary changes for verbs, PSM, and vnic to use
the new locks.
This is particularly beneficial for smaller messages that will exhaust
resources at a faster rate.
Fixes: 7724105686 ("IB/hfi1: add driver files")
Reviewed-by: Gary Leshner <Gary.S.Leshner@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The call to sdma_progress() is called outside the wait lock.
In this case, there is a race condition where sdma_progress() can return
false and the sdma_engine can idle. If that happens, there will be no
more sdma interrupts to cause the wakeup and the vnic_sdma xmit will hang.
Fix by moving the lock to enclose the sdma_progress() call.
Also, delete the tx_retry. The need for this was removed by:
commit bcad29137a ("IB/hfi1: Serve the most starved iowait entry first")
Fixes: 64551ede6c ("IB/hfi1: VNIC SDMA support")
Reviewed-by: Gary Leshner <Gary.S.Leshner@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This patch adds an interface to allow the driver to initialize the QP priv
struct when the QP is created and after the qpn has been assigned. A
field is added to the QP priv struct to reference the rcd and two new
files are added to contain the function to initialize the rcd field so
that more TID RDMA related code can be added here later.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The OPFN and TID RDMA capability bits are added to allow users to control
which feature is enabled and disabled.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Currently, When a reserved operation is completed, its entry in the send
queue will not be unreserved, which leads to the miscalculation of
qp->s_avail and thus the triggering of a WARN_ON call trace. This patch
fixes the problem by unreserving the reserved operation when it is
completed.
Fixes: 856cc4c237 ("IB/hfi1: Add the capability for reserved operations")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Ingress packet check for 16B/bypass packets should consider the port
LMC. Not doing this will result in packets sent to the LMC LIDs getting
dropped. The check is implemented in HW for 9B packets.
Reviewed-by: Mike Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
An incorrect sge sizing in the HFI PIO path will cause an OOPs similar to
this:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [] hfi1_verbs_send_pio+0x3d8/0x530 [hfi1]
PGD 0
Oops: 0000 1 SMP
Call Trace:
? hfi1_verbs_send_dma+0xad0/0xad0 [hfi1]
hfi1_verbs_send+0xdf/0x250 [hfi1]
? make_rc_ack+0xa80/0xa80 [hfi1]
hfi1_do_send+0x192/0x430 [hfi1]
hfi1_do_send_from_rvt+0x10/0x20 [hfi1]
rvt_post_send+0x369/0x820 [rdmavt]
ib_uverbs_post_send+0x317/0x570 [ib_uverbs]
ib_uverbs_write+0x26f/0x420 [ib_uverbs]
? security_file_permission+0x21/0xa0
vfs_write+0xbd/0x1e0
? mntput+0x24/0x40
SyS_write+0x7f/0xe0
system_call_fastpath+0x16/0x1b
Fix by adding the missing sizing check to correctly determine the sge
length.
Fixes: 7724105686 ("IB/hfi1: add driver files")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
VNIC assumes that all SDMA engines have been configured for use. This is
not necessarily true (i.e. if the count was constrained by the module
parameter).
Update VNICs usage to use the configured count, rather than the hardware
count.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Gary Leshner <gary.s.leshner@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
A CA is supposed to ignore FECN bits in multicast, ACK, and CNP
packets. This patch corrects the behavior of the HFI1 driver in this
regard by ignoring FECNs in those packet types.
While fixing the above behavior, fix the extraction of the FECN and BECN
bits from the packet headers for both 9B and 16B packets.
Furthermore, this patch corrects the driver's response to a FECN in RDMA
READ RESPONSE packets. Instead of sending an "empty" ACK, the driver now
sends a CNP packet. While editing that code path, add the missing trace
for CNP packets.
Fixes: 88733e3b84 ("IB/hfi1: Add 16B UD support")
Fixes: f59fb9e051 ("IB/hfi1: Fix handling of FECN marked multicast packet")
Reviewed-by: Kaike Wan <kaike.wan@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
When it is requested to change its physical state back to Offline while in
the process to go up, DC8051 will set the ERROR field in the
DC8051_DBG_ERR_INFO_SET_BY_8051 register. This ERROR field will remain
until the next time when DC8051 transitions from Offline to Polling.
Subsequently, when the host requests DC8051 to change its physical state
to Polling again, it may receive a DC8051 interrupt with the stale ERROR
field still in DC8051_DBG_ERR_INFO_SET_BY_8051. If the host link state has
been changed to Polling, this stale ERROR will force the host to
transition to Offline state, resulting in a vicious cycle of Polling
->Offline->Polling->Offline. On the other hand, if the host link state is
still Offline when the stale ERROR is received, the stale ERROR will be
ignored, and the link will come up correctly. This patch implements the
correct behavior by changing host link state to Polling only after DC8051
changes its physical state to Polling.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Krzysztof Goreczny <krzysztof.goreczny@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This patch dumps the pio info for non-user send contexts to assist
debugging in the field.
Reviewed-by: Mike Marciniczyn <mike.marciniszyn@intel.com>
Reviewed-by: Mike Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
A recent performance enhancement introduced a latency issue in the
HFI message path. The new algorithm removed a forced call send for
PIO messages and added a forced schedule event for messages larger
than the MTU.
For PIO, the schedule path can introduce thrashing that can
significantly impact the throughput for small messages.
If a message size is within the PIO threshold, always take the send
path.
Fixes: 0b79b27748 ("IB/{hfi1, qib, rdmavt}: Schedule multi RC/UC packets instead of posting")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Revert 5ff7091f5a ("mm, mmu_notifier: annotate mmu notifiers with
blockable invalidate callbacks").
MMU_INVALIDATE_DOES_NOT_BLOCK flags was the only one used and it is no
longer needed since 93065ac753 ("mm, oom: distinguish blockable mode for
mmu notifiers"). We now have a full support for per range !blocking
behavior so we can drop the stop gap workaround which the per notifier
flag was used for.
Link: http://lkml.kernel.org/r/20180827112623.8992-4-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This has been a smaller cycle with many of the commits being smallish code
fixes and improvements across the drivers.
- Driver updates for bnxt_re, cxgb4, hfi1, hns, mlx5, nes, qedr, and rxe
- Memory window support in hns
- mlx5 user API 'flow mutate/steering' allows accessing the full packet
mangling and matching machinery from user space
- Support inter-working with verbs API calls in the 'devx' mlx5 user API, and
provide options to use devx with less privilege
- Modernize the use of syfs and the device interface to use attribute groups
and cdev properly for uverbs, and clean up some of the core code's device list
management
- More progress on net namespaces for RDMA devices
- Consolidate driver BAR mmapping support into core code helpers and rework
how RDMA holds poitners to mm_struct for get_user_pages cases
- First pass to use 'dev_name' instead of ib_device->name
- Device renaming for RDMA devices
-----BEGIN PGP SIGNATURE-----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=pacJ
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"This has been a smaller cycle with many of the commits being smallish
code fixes and improvements across the drivers.
- Driver updates for bnxt_re, cxgb4, hfi1, hns, mlx5, nes, qedr, and
rxe
- Memory window support in hns
- mlx5 user API 'flow mutate/steering' allows accessing the full
packet mangling and matching machinery from user space
- Support inter-working with verbs API calls in the 'devx' mlx5 user
API, and provide options to use devx with less privilege
- Modernize the use of syfs and the device interface to use attribute
groups and cdev properly for uverbs, and clean up some of the core
code's device list management
- More progress on net namespaces for RDMA devices
- Consolidate driver BAR mmapping support into core code helpers and
rework how RDMA holds poitners to mm_struct for get_user_pages
cases
- First pass to use 'dev_name' instead of ib_device->name
- Device renaming for RDMA devices"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (242 commits)
IB/mlx5: Add support for extended atomic operations
RDMA/core: Fix comment for hw stats init for port == 0
RDMA/core: Refactor ib_register_device() function
RDMA/core: Fix unwinding flow in case of error to register device
ib_srp: Remove WARN_ON in srp_terminate_io()
IB/mlx5: Allow scatter to CQE without global signaled WRs
IB/mlx5: Verify that driver supports user flags
IB/mlx5: Support scatter to CQE for DC transport type
RDMA/drivers: Use core provided API for registering device attributes
RDMA/core: Allow existing drivers to set one sysfs group per device
IB/rxe: Remove unnecessary enum values
RDMA/umad: Use kernel API to allocate umad indexes
RDMA/uverbs: Use kernel API to allocate uverbs indexes
RDMA/core: Increase total number of RDMA ports across all devices
IB/mlx4: Add port and TID to MAD debug print
IB/mlx4: Enable debug print of SMPs
RDMA/core: Rename ports_parent to ports_kobj
RDMA/core: Do not expose unsupported counters
IB/mlx4: Refer to the device kobject instead of ports_parent
RDMA/nldev: Allow IB device rename through RDMA netlink
...
-----BEGIN PGP SIGNATURE-----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=58I4
-----END PGP SIGNATURE-----
Merge tag 'pci-v4.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- Fix ASPM link_state teardown on removal (Lukas Wunner)
- Fix misleading _OSC ASPM message (Sinan Kaya)
- Make _OSC optional for PCI (Sinan Kaya)
- Don't initialize ASPM link state when ACPI_FADT_NO_ASPM is set
(Patrick Talbert)
- Remove x86 and arm64 node-local allocation for host bridge structures
(Punit Agrawal)
- Pay attention to device-specific _PXM node values (Jonathan Cameron)
- Support new Immediate Readiness bit (Felipe Balbi)
- Differentiate between pciehp surprise and safe removal (Lukas Wunner)
- Remove unnecessary pciehp includes (Lukas Wunner)
- Drop pciehp hotplug_slot_ops wrappers (Lukas Wunner)
- Tolerate PCIe Slot Presence Detect being hardwired to zero to
workaround broken hardware, e.g., the Wilocity switch/wireless device
(Lukas Wunner)
- Unify pciehp controller & slot structs (Lukas Wunner)
- Constify hotplug_slot_ops (Lukas Wunner)
- Drop hotplug_slot_info (Lukas Wunner)
- Embed hotplug_slot struct into users instead of allocating it
separately (Lukas Wunner)
- Initialize PCIe port service drivers directly instead of relying on
initcall ordering (Keith Busch)
- Restore PCI config state after a slot reset (Keith Busch)
- Save/restore DPC config state along with other PCI config state
(Keith Busch)
- Reference count devices during AER handling to avoid race issue with
concurrent hot removal (Keith Busch)
- If an Upstream Port reports ERR_FATAL, don't try to read the Port's
config space because it is probably unreachable (Keith Busch)
- During error handling, use slot-specific reset instead of secondary
bus reset to avoid link up/down issues on hotplug ports (Keith Busch)
- Restore previous AER/DPC handling that does not remove and
re-enumerate devices on ERR_FATAL (Keith Busch)
- Notify all drivers that may be affected by error recovery resets
(Keith Busch)
- Always generate error recovery uevents, even if a driver doesn't have
error callbacks (Keith Busch)
- Make PCIe link active reporting detection generic (Keith Busch)
- Support D3cold in PCIe hierarchies during system sleep and runtime,
including hotplug and Thunderbolt ports (Mika Westerberg)
- Handle hpmemsize/hpiosize kernel parameters uniformly, whether slots
are empty or occupied (Jon Derrick)
- Remove duplicated include from pci/pcie/err.c and unused variable
from cpqphp (YueHaibing)
- Remove driver pci_cleanup_aer_uncorrect_error_status() calls (Oza
Pawandeep)
- Uninline PCI bus accessors for better ftracing (Keith Busch)
- Remove unused AER Root Port .error_resume method (Keith Busch)
- Use kfifo in AER instead of a local version (Keith Busch)
- Use threaded IRQ in AER bottom half (Keith Busch)
- Use managed resources in AER core (Keith Busch)
- Reuse pcie_port_find_device() for AER injection (Keith Busch)
- Abstract AER interrupt handling to disconnect error injection (Keith
Busch)
- Refactor AER injection callbacks to simplify future improvments
(Keith Busch)
- Remove unused Netronome NFP32xx Device IDs (Jakub Kicinski)
- Use bitmap_zalloc() for dma_alias_mask (Andy Shevchenko)
- Add switch fall-through annotations (Gustavo A. R. Silva)
- Remove unused Switchtec quirk variable (Joshua Abraham)
- Fix pci.c kernel-doc warning (Randy Dunlap)
- Remove trivial PCI wrappers for DMA APIs (Christoph Hellwig)
- Add Intel GPU device IDs to spurious interrupt quirk (Bin Meng)
- Run Switchtec DMA aliasing quirk only on NTB endpoints to avoid
useless dmesg errors (Logan Gunthorpe)
- Update Switchtec NTB documentation (Wesley Yung)
- Remove redundant "default n" from Kconfig (Bartlomiej Zolnierkiewicz)
- Avoid panic when drivers enable MSI/MSI-X twice (Tonghao Zhang)
- Add PCI support for peer-to-peer DMA (Logan Gunthorpe)
- Add sysfs group for PCI peer-to-peer memory statistics (Logan
Gunthorpe)
- Add PCI peer-to-peer DMA scatterlist mapping interface (Logan
Gunthorpe)
- Add PCI configfs/sysfs helpers for use by peer-to-peer users (Logan
Gunthorpe)
- Add PCI peer-to-peer DMA driver writer's documentation (Logan
Gunthorpe)
- Add block layer flag to indicate driver support for PCI peer-to-peer
DMA (Logan Gunthorpe)
- Map Infiniband scatterlists for peer-to-peer DMA if they contain P2P
memory (Logan Gunthorpe)
- Register nvme-pci CMB buffer as PCI peer-to-peer memory (Logan
Gunthorpe)
- Add nvme-pci support for PCI peer-to-peer memory in requests (Logan
Gunthorpe)
- Use PCI peer-to-peer memory in nvme (Stephen Bates, Steve Wise,
Christoph Hellwig, Logan Gunthorpe)
- Cache VF config space size to optimize enumeration of many VFs
(KarimAllah Ahmed)
- Remove unnecessary <linux/pci-ats.h> include (Bjorn Helgaas)
- Fix VMD AERSID quirk Device ID matching (Jon Derrick)
- Fix Cadence PHY handling during probe (Alan Douglas)
- Signal Cadence Endpoint interrupts via AXI region 0 instead of last
region (Alan Douglas)
- Write Cadence Endpoint MSI interrupts with 32 bits of data (Alan
Douglas)
- Remove redundant controller tests for "device_type == pci" (Rob
Herring)
- Document R-Car E3 (R8A77990) bindings (Tho Vu)
- Add device tree support for R-Car r8a7744 (Biju Das)
- Drop unused mvebu PCIe capability code (Thomas Petazzoni)
- Add shared PCI bridge emulation code (Thomas Petazzoni)
- Convert mvebu to use shared PCI bridge emulation (Thomas Petazzoni)
- Add aardvark Root Port emulation (Thomas Petazzoni)
- Support 100MHz/200MHz refclocks for i.MX6 (Lucas Stach)
- Add initial power management for i.MX7 (Leonard Crestez)
- Add PME_Turn_Off support for i.MX7 (Leonard Crestez)
- Fix qcom runtime power management error handling (Bjorn Andersson)
- Update TI dra7xx unaligned access errata workaround for host mode as
well as endpoint mode (Vignesh R)
- Fix kirin section mismatch warning (Nathan Chancellor)
- Remove iproc PAXC slot check to allow VF support (Jitendra Bhivare)
- Quirk Keystone K2G to limit MRRS to 256 (Kishon Vijay Abraham I)
- Update Keystone to use MRRS quirk for host bridge instead of open
coding (Kishon Vijay Abraham I)
- Refactor Keystone link establishment (Kishon Vijay Abraham I)
- Simplify and speed up Keystone link training (Kishon Vijay Abraham I)
- Remove unused Keystone host_init argument (Kishon Vijay Abraham I)
- Merge Keystone driver files into one (Kishon Vijay Abraham I)
- Remove redundant Keystone platform_set_drvdata() (Kishon Vijay
Abraham I)
- Rename Keystone functions for uniformity (Kishon Vijay Abraham I)
- Add Keystone device control module DT binding (Kishon Vijay Abraham
I)
- Use SYSCON API to get Keystone control module device IDs (Kishon
Vijay Abraham I)
- Clean up Keystone PHY handling (Kishon Vijay Abraham I)
- Use runtime PM APIs to enable Keystone clock (Kishon Vijay Abraham I)
- Clean up Keystone config space access checks (Kishon Vijay Abraham I)
- Get Keystone outbound window count from DT (Kishon Vijay Abraham I)
- Clean up Keystone outbound window configuration (Kishon Vijay Abraham
I)
- Clean up Keystone DBI setup (Kishon Vijay Abraham I)
- Clean up Keystone ks_pcie_link_up() (Kishon Vijay Abraham I)
- Fix Keystone IRQ status checking (Kishon Vijay Abraham I)
- Add debug messages for all Keystone errors (Kishon Vijay Abraham I)
- Clean up Keystone includes and macros (Kishon Vijay Abraham I)
- Fix Mediatek unchecked return value from devm_pci_remap_iospace()
(Gustavo A. R. Silva)
- Fix Mediatek endpoint/port matching logic (Honghui Zhang)
- Change Mediatek Root Port Class Code to PCI_CLASS_BRIDGE_PCI (Honghui
Zhang)
- Remove redundant Mediatek PM domain check (Honghui Zhang)
- Convert Mediatek to pci_host_probe() (Honghui Zhang)
- Fix Mediatek MSI enablement (Honghui Zhang)
- Add Mediatek system PM support for MT2712 and MT7622 (Honghui Zhang)
- Add Mediatek loadable module support (Honghui Zhang)
- Detach VMD resources after stopping root bus to prevent orphan
resources (Jon Derrick)
- Convert pcitest build process to that used by other tools (iio, perf,
etc) (Gustavo Pimentel)
* tag 'pci-v4.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
PCI/AER: Refactor error injection fallbacks
PCI/AER: Abstract AER interrupt handling
PCI/AER: Reuse existing pcie_port_find_device() interface
PCI/AER: Use managed resource allocations
PCI: pcie: Remove redundant 'default n' from Kconfig
PCI: aardvark: Implement emulated root PCI bridge config space
PCI: mvebu: Convert to PCI emulated bridge config space
PCI: mvebu: Drop unused PCI express capability code
PCI: Introduce PCI bridge emulated config space common logic
PCI: vmd: Detach resources after stopping root bus
nvmet: Optionally use PCI P2P memory
nvmet: Introduce helper functions to allocate and free request SGLs
nvme-pci: Add support for P2P memory in requests
nvme-pci: Use PCI p2pmem subsystem to manage the CMB
IB/core: Ensure we map P2P memory correctly in rdma_rw_ctx_[init|destroy]()
block: Add PCI P2P flag for request queue
PCI/P2PDMA: Add P2P DMA driver writer's documentation
docs-rst: Add a new directory for PCI documentation
PCI/P2PDMA: Introduce configfs/sysfs enable attribute helpers
PCI/P2PDMA: Add PCI p2pmem DMA mappings to adjust the bus offset
...
Use rdma_set_device_sysfs_group() to register device attributes and
simplify the driver.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
From git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git
This is required to resolve dependencies of the next series of RDMA
patches.
The code motion conflicts in drivers/infiniband/core/cache.c were
resolved.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
