For memcpy, the source pages are memset to zero only when --cycles is
used.  This leads to wildly different results with or without --cycles,
since all sources pages are likely to be mapped to the same zero page
without explicit writes.

Before this fix:

$ export cmd="./perf stat -e LLC-loads -- ./perf bench \
  mem memcpy -s 1024MB -l 100 -f default"
$ $cmd

         2,935,826      LLC-loads
       3.821677452 seconds time elapsed

$ $cmd --cycles

       217,533,436      LLC-loads
       8.616725985 seconds time elapsed

After this fix:

$ $cmd

       214,459,686      LLC-loads
       8.674301124 seconds time elapsed

$ $cmd --cycles

       214,758,651      LLC-loads
       8.644480006 seconds time elapsed

Fixes: 47b5757b ("perf bench mem: Move boilerplate memory allocation to the infrastructure")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel@axis.com
Link: http://lore.kernel.org/lkml/20200810133404.30829-1-vincent.whitchurch@axis.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Commit fbd705a0 ("sched: Introduce the 'trace_sched_waking'
tracepoint") added sched_waking tracepoint which should be preferred
over sched_wakeup when analyzing scheduling delays.

Update 'perf sched record' to collect sched_waking events if it exists
and fallback to sched_wakeup if it does not. Similarly, update timehist
command to skip sched_wakeup events if the session includes sched_waking
(ie., sched_waking is preferred over sched_wakeup).
Signed-off-by: David Ahern <dsahern@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lore.kernel.org/lkml/20200807164844.44870-1-dsahern@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

There are a couple of spelling mistakes in the text. Fix these.
Signed-off-by: Colin King <colin.king@canonical.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-janitors@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200812064647.200132-1-colin.king@canonical.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Standard benchmark names let users know the tests specifics.  For
example "2x1-bw-process" name tells that two processes one thread each
are run and the RAM bandwidth is measured.

Several benchmarks names do not correspond to their actual running
configuration. Fix that and also some whitespace and comment
inconsistencies.
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/6b6f2084f132ee8e9203dc7c32f9deb209b87a68.1597004831.git.agordeev@linux.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/d949f5f48e17fc816f3beecf8479f1b2480345e4.1597004831.git.agordeev@linux.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

To pick the changes in:

  3edd6839 ("KVM: x86: Add a capability for GUEST_MAXPHYADDR < HOST_MAXPHYADDR support")
  1aa561b1 ("kvm: x86: Add "last CPU" to some KVM_EXIT information")
  23a60f83 ("s390/kvm: diagnose 0x318 sync and reset")

That do not result in any change in tooling, as the additions are not
being used in any table generator.

This silences these perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Collin Walling <walling@linux.ibm.com>
Cc: Jim Mattson <jmattson@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mohammed Gamal <mgamal@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

To get the changes in:

  25abc060 ("vhost-vdpa: support IOTLB batching hints")

This doesn't result in any changes in tooling, no new ioctls to be
picked up by the id->string table generators, etc.

Silencing this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/vhost.h' differs from latest version at 'include/uapi/linux/vhost.h'
  diff -u tools/include/uapi/linux/vhost.h include/uapi/linux/vhost.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

To pick the changes in:

  23a60f83 ("s390/kvm: diagnose 0x318 sync and reset")

None of them trigger any changes in tooling, this time this is just to silence
these perf build warnings:

  Warning: Kernel ABI header at 'tools/arch/s390/include/uapi/asm/kvm.h' differs from latest version at 'arch/s390/include/uapi/asm/kvm.h'
  diff -u tools/arch/s390/include/uapi/asm/kvm.h arch/s390/include/uapi/asm/kvm.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Collin Walling <walling@linux.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

That helps us not to lose new protocol families when they are
introduced, replacing that hardcoded, dated family->string table.

To recap what this allows us to do:

  # perf trace -e syscalls:sys_enter_socket/max-stack=10/ --filter=family==INET --max-events=1
     0.000 fetchmail/41097 syscalls:sys_enter_socket(family: INET, type: DGRAM|CLOEXEC|NONBLOCK, protocol: IP)
                                       __GI___socket (inlined)
                                       reopen (/usr/lib64/libresolv-2.31.so)
                                       send_dg (/usr/lib64/libresolv-2.31.so)
                                       __res_context_send (/usr/lib64/libresolv-2.31.so)
                                       __GI___res_context_query (inlined)
                                       __GI___res_context_search (inlined)
                                       _nss_dns_gethostbyname4_r (/usr/lib64/libnss_dns-2.31.so)
                                       gaih_inet.constprop.0 (/usr/lib64/libc-2.31.so)
                                       __GI_getaddrinfo (inlined)
                                       [0x15cb2] (/usr/bin/fetchmail)
  #

More work is still needed to allow for the more natura strace-like
syscall name usage instead of the trace event name:

  # perf trace -e socket/max-stack=10,family==INET/ --max-events=1

I.e. to allow for modifiers to follow the syscall name and for logical
expressions to be accepted as filters to use with that syscall, be it as
trace event filters or BPF based ones.

Using -v we can see how the trace event filter is built:

  # perf trace -v -e syscalls:sys_enter_socket/call-graph=dwarf/ --filter=family==INET --max-events=2
  <SNIP>
  New filter for syscalls:sys_enter_socket: (family==0x2) && (common_pid != 41384 && common_pid != 2836)
  <SNIP>

  $ tools/perf/trace/beauty/socket.sh | grep -w 2
	[2] = "INET",
  $

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

To use with 'perf trace', to convert the protocol families to strings,
e.g:

  $ tools/perf/trace/beauty/socket.sh
  static const char *socket_families[] = {
  	[0] = "UNSPEC",
  	[1] = "LOCAL",
  	[2] = "INET",
  	[3] = "AX25",
  	[4] = "IPX",
  	[5] = "APPLETALK",
  	[6] = "NETROM",
  	[7] = "BRIDGE",
  	[8] = "ATMPVC",
  	[9] = "X25",
  	[10] = "INET6",
  	[11] = "ROSE",
  	[12] = "DECnet",
  	[13] = "NETBEUI",
  	[14] = "SECURITY",
  	[15] = "KEY",
  	[16] = "NETLINK",
  	[17] = "PACKET",
  	[18] = "ASH",
  	[19] = "ECONET",
  	[20] = "ATMSVC",
  	[21] = "RDS",
  	[22] = "SNA",
  	[23] = "IRDA",
  	[24] = "PPPOX",
  	[25] = "WANPIPE",
  	[26] = "LLC",
  	[27] = "IB",
  	[28] = "MPLS",
  	[29] = "CAN",
  	[30] = "TIPC",
  	[31] = "BLUETOOTH",
  	[32] = "IUCV",
  	[33] = "RXRPC",
  	[34] = "ISDN",
  	[35] = "PHONET",
  	[36] = "IEEE802154",
  	[37] = "CAIF",
  	[38] = "ALG",
  	[39] = "NFC",
  	[40] = "VSOCK",
  	[41] = "KCM",
  	[42] = "QIPCRTR",
  	[43] = "SMC",
  	[44] = "XDP",
  };
  $

This uses a copy of include/linux/socket.h that is kept in a directory
to be used just for these table generation scripts and for checking if
the kernel has a new file that maybe gets something new for these
tables.

This allows us to:

- Avoid accessing files outside tools/, in the kernel sources, that may
  be changed in unexpected ways and thus break these scripts.

- Notice when those files change and thus check if the changes don't
  break those scripts, update them to automatically get the new
  definitions, a new socket family, for instance.

- Not add then to the tools/include/ where it may end up used while
  building the tools and end up requiring dragging yet more stuff from
  the kernel or plain break the build in some of the myriad environments
  where perf may be built.

This will replace the previous static array in tools/perf/ that was
dated and was already missing the AF_KCM, AF_QIPCRTR, AF_SMC and AF_XDP
families.

The next cset will wire this up to the perf build process.

At some point this must be made into a library to be used in places such
as libtraceevent, bpftrace, etc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Merge tag 'tag-chrome-platform-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome platform updates from Benson Leung:
 "cros_ec_typec:

   - Add support for switch control and alternate modes to the Chrome EC
     Type C port driver

   - Add basic suspend/resume support

  sensorhub:

   - Fix timestamp overflow issue

   - Fix legacy timestamp spreading on Nami systems

  cros_ec_proto:

   - After removing all users of, stop exporting cros_ec_cmd_xfer

   - Check for missing EC_CMD_HOST_EVENT_GET_WAKE_MASK and ignore
     wakeups on old ECs

  misc:

   - Documentation warning cleanup

   - Fix double unlock issue in ishtp"

* tag 'tag-chrome-platform-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: (21 commits)
  platform/chrome: cros_ec_proto: check for missing EC_CMD_HOST_EVENT_GET_WAKE_MASK
  platform/chrome: cros_ec_proto: ignore unnecessary wakeups on old ECs
  platform/chrome: cros_ec_sensorhub: Simplify legacy timestamp spreading
  platform/chrome: cros_ec_proto: Do not export cros_ec_cmd_xfer()
  platform/chrome: cros_ec_typec: Unregister partner on error
  platform/chrome: cros_ec_sensorhub: Fix EC timestamp overflow
  platform/chrome: cros_ec_typec: Add PM support
  platform/chrome: cros_ec_typec: Use workqueue for port update
  platform/chrome: cros_ec_typec: Add a dependency on USB_ROLE_SWITCH
  platform/chrome: cros_ec_ishtp: Fix a double-unlock issue
  platform/chrome: cros_ec_rpmsg: Document missing struct parameters
  platform/chrome: cros_ec_spi: Document missing function parameters
  platform/chrome: cros_ec_typec: Add TBT compat support
  platform/chrome: cros_ec: Add TBT pd_ctrl fields
  platform/chrome: cros_ec_typec: Make configure_mux static
  platform/chrome: cros_ec_typec: Support DP alt mode
  platform/chrome: cros_ec_typec: Add USB mux control
  platform/chrome: cros_ec_typec: Register PD CTRL cmd v2
  platform/chrome: cros_ec: Update mux state bits
  platform/chrome: cros_ec_typec: Register Type C switches
  ...

Pull orangefs updates from Mike Marshall:
 "A fix and a cleanup...

  The fix: Al Viro pointed out that I had broken some acl functionality
  with one of my previous patches.

  And the cleanup: Jing Xiangfeng found and removed a needless variable
  assignment"

* tag 'for-linus-5.9-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  orangefs: remove unnecessary assignment to variable ret
  orangefs: posix acl fix...

Pull zonefs update from Damien Le Moal:
 "A single change for this cycle adding support for zone capacities
  smaller than the zone size, from Johannes"

* tag 'zonefs-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
  zonefs: update documentation to reflect zone size vs capacity
  zonefs: add zone-capacity support

Pull arm64 fix from Catalin Marinas:
 "Fix recordmcount build failure on non-arm64 (caused by an arm64
  patch)"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  recordmcount: Fix build failure on non arm64

Pull virtio updates from Michael Tsirkin:

 - IRQ bypass support for vdpa and IFC

 - MLX5 vdpa driver

 - Endianness fixes for virtio drivers

 - Misc other fixes

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (71 commits)
  vdpa/mlx5: fix up endian-ness for mtu
  vdpa: Fix pointer math bug in vdpasim_get_config()
  vdpa/mlx5: Fix pointer math in mlx5_vdpa_get_config()
  vdpa/mlx5: fix memory allocation failure checks
  vdpa/mlx5: Fix uninitialised variable in core/mr.c
  vdpa_sim: init iommu lock
  virtio_config: fix up warnings on parisc
  vdpa/mlx5: Add VDPA driver for supported mlx5 devices
  vdpa/mlx5: Add shared memory registration code
  vdpa/mlx5: Add support library for mlx5 VDPA implementation
  vdpa/mlx5: Add hardware descriptive header file
  vdpa: Modify get_vq_state() to return error code
  net/vdpa: Use struct for set/get vq state
  vdpa: remove hard coded virtq num
  vdpasim: support batch updating
  vhost-vdpa: support IOTLB batching hints
  vhost-vdpa: support get/set backend features
  vhost: generialize backend features setting/getting
  vhost-vdpa: refine ioctl pre-processing
  vDPA: dont change vq irq after DRIVER_OK
  ...

Pull security subsystem updates from James Morris:
 "A couple of minor documentation updates only for this release"

* tag 'for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  LSM: drop duplicated words in header file comments
  Replace HTTP links with HTTPS ones: security

Pull iommu updates from Joerg Roedel:

 - Remove of the dev->archdata.iommu (or similar) pointers from most
   architectures. Only Sparc is left, but this is private to Sparc as
   their drivers don't use the IOMMU-API.

 - ARM-SMMU updates from Will Deacon:

     - Support for SMMU-500 implementation in Marvell Armada-AP806 SoC

     - Support for SMMU-500 implementation in NVIDIA Tegra194 SoC

     - DT compatible string updates

     - Remove unused IOMMU_SYS_CACHE_ONLY flag

     - Move ARM-SMMU drivers into their own subdirectory

 - Intel VT-d updates from Lu Baolu:

     - Misc tweaks and fixes for vSVA

     - Report/response page request events

     - Cleanups

 - Move the Kconfig and Makefile bits for the AMD and Intel drivers into
   their respective subdirectory.

 - MT6779 IOMMU Support

 - Support for new chipsets in the Renesas IOMMU driver

 - Other misc cleanups and fixes (e.g. to improve compile test coverage)

* tag 'iommu-updates-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (77 commits)
  iommu/amd: Move Kconfig and Makefile bits down into amd directory
  iommu/vt-d: Move Kconfig and Makefile bits down into intel directory
  iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectory
  iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu
  iommu: Add gfp parameter to io_pgtable_ops->map()
  iommu: Mark __iommu_map_sg() as static
  iommu/vt-d: Rename intel-pasid.h to pasid.h
  iommu/vt-d: Add page response ops support
  iommu/vt-d: Report page request faults for guest SVA
  iommu/vt-d: Add a helper to get svm and sdev for pasid
  iommu/vt-d: Refactor device_to_iommu() helper
  iommu/vt-d: Disable multiple GPASID-dev bind
  iommu/vt-d: Warn on out-of-range invalidation address
  iommu/vt-d: Fix devTLB flush for vSVA
  iommu/vt-d: Handle non-page aligned address
  iommu/vt-d: Fix PASID devTLB invalidation
  iommu/vt-d: Remove global page support in devTLB flush
  iommu/vt-d: Enforce PASID devTLB field mask
  iommu: Make some functions static
  iommu/amd: Remove double zero check
  ...

Pull backlight updates from Lee Jones:
 "Core Framework:
   - Trivial: Code refactoring
   - New API backlight_is_blank()
   - New API backlight_get_brightness()
   - Additional/reworked documentation
   - Remove 'extern' labels from prototypes
   - Drop backlight_put()
   - Staticify of_find_backlight()

  Driver Removal:
   - Removal of unused OT200 driver
   - Removal of unused Generic Backlight driver

  Fix-ups
   - Bunch of W=1 warning fixes
   - Convert to GPIO descriptors; sky81452
   - Move platform data handling into driver; sky81452
   - Remove superfluous code; lms501kf03
   - Many instances of using new APIs"

* tag 'backlight-next-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: (34 commits)
  video: backlight: cr_bllcd: Remove unused variable 'intensity'
  backlight: backlight: Make of_find_backlight static
  backlight: backlight: Drop backlight_put()
  backlight: Use backlight_get_brightness() throughout
  backlight: jornada720_bl: Introduce backlight_is_blank()
  backlight: gpio_backlight: Simplify update_status()
  backlight: cr_bllcd: Introduce gpio-backlight semantics
  backlight: as3711_bl: Simplify update_status
  backlight: backlight: Introduce backlight_get_brightness()
  doc-rst: Wire-up Backlight kernel-doc documentation
  backlight: backlight: Add overview and update existing doc
  backlight: backlight: Drop extern from prototypes
  backlight: generic_bl: Remove this driver as it is unused
  backlight: backlight: Document enums in backlight.h
  backlight: backlight: Document inline functions in backlight.h
  backlight: backlight: Improve backlight_device documentation
  backlight: backlight: Improve backlight_properties documentation
  backlight: backlight: Improve backlight_ops documentation
  backlight: backlight: Add backlight_is_blank()
  backlight: backlight: Refactor fb_notifier_callback()
  ...

Pull hwspinlock updates from Bjorn Andersson:
 "This introduces a new DT binding format to describe the Qualcomm
  hardware mutex block and deprecates the old, invalid, one.

  It also cleans up the Kconfig slightly"

* tag 'hwlock-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
  dt-bindings: hwlock: qcom: Remove invalid binding
  hwspinlock: qcom: Allow mmio usage in addition to syscon
  dt-bindings: hwlock: qcom: Allow device on mmio bus
  dt-bindings: hwlock: qcom: Migrate binding to YAML
  hwspinlock: Simplify Kconfig

Pull remoteproc updates from Bjorn Andersson:
 "This introduces a new "detached" state for remote processors that are
  deemed to be running at the time Linux boots and the infrastructure
  for "attaching" to these. It then introduces the support for
  performing this operation for the STM32 platform.

  The coredump functionality is moved out from the core file and gains
  support for an optional mode where the recovery phase awaits the
  notification from devcoredump that the dump should be released. This
  allows userspace to grab the coredump in scenarios where vmalloc space
  is too low for creating a complete copy of the coredump before handing
  this to devcoredump.

  A new character device based interface is introduced to allow tying
  the stoppage of a remote processor to the termination of a user space
  process. This is useful in situations when such process provides
  crucial resources/operations for the firmware running on the remote
  processor.

  The Texas Instrument K3 driver gains support for the C66x and C71x
  DSPs.

  Qualcomm remoteprocs gains support for stashing relocation information
  in IMEM, to aid post mortem debugging and the crash notification
  mechanism is generalized to be reusable in cases where loosely coupled
  drivers needs to know about the status of a remote processor. One such
  example is the IPA hardware block, which is jointly owned with the
  modem and migrated to this improved interface.

  It also introduces a number of bug fixes and debug improvements for
  the Qualcomm modem remoteproc driver.

  And it cleans up the inconsistent interface for remoteproc drivers to
  implement power management"

* tag 'rproc-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc: (56 commits)
  remoteproc: core: Register the character device interface
  remoteproc: Add remoteproc character device interface
  remoteproc: kill IPA notify code
  net: ipa: new notification infrastructure
  remoteproc: k3-dsp: Add support for C71x DSPs
  dt-bindings: remoteproc: k3-dsp: Update bindings for C71x DSPs
  remoteproc: k3-dsp: Add support for L2RAM loading on C66x DSPs
  remoteproc: k3-dsp: Add a remoteproc driver of K3 C66x DSPs
  dt-bindings: remoteproc: Add bindings for C66x DSPs on TI K3 SoCs
  remoteproc: k3: Add TI-SCI processor control helper functions
  remoteproc: Introduce rproc_of_parse_firmware() helper
  dt-bindings: arm: keystone: Add common TI SCI bindings
  remoteproc: qcom_q6v5_mss: Remove redundant running state
  remoteproc: qcom: q6v5: Update running state before requesting stop
  remoteproc: qcom_q6v5_mss: Add modem debug policy support
  remoteproc: qcom_q6v5_mss: Validate modem blob firmware size before load
  remoteproc: qcom_q6v5_mss: Validate MBA firmware size before load
  rpmsg: update documentation
  remoteproc: qcom_q6v5_mss: Add MBA log extraction support
  remoteproc: Add coredump debugfs entry
  ...

Pull rpmsg update from Bjorn Andersson:
 "This ensures that rpmsg uses little-endian, per the VirtIO 1.0
  specification"

* tag 'rpmsg-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
  rpmsg: virtio: add endianness conversions

Pull libnvdimm updayes from Vishal Verma:
 "You'd normally receive this pull request from Dan Williams, but he's
  busy watching a newborn (Congrats Dan!), so I'm watching libnvdimm
  this cycle.

  This adds a new feature in libnvdimm - 'Runtime Firmware Activation',
  and a few small cleanups and fixes in libnvdimm and DAX. I'd
  originally intended to make separate topic-based pull requests - one
  for libnvdimm, and one for DAX, but some of the DAX material fell out
  since it wasn't quite ready.

  Summary:

   - add 'Runtime Firmware Activation' support for NVDIMMs that
     advertise the relevant capability

   - misc libnvdimm and DAX cleanups"

* tag 'libnvdimm-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm/security: ensure sysfs poll thread woke up and fetch updated attr
  libnvdimm/security: the 'security' attr never show 'overwrite' state
  libnvdimm/security: fix a typo
  ACPI: NFIT: Fix ARS zero-sized allocation
  dax: Fix incorrect argument passed to xas_set_err()
  ACPI: NFIT: Add runtime firmware activate support
  PM, libnvdimm: Add runtime firmware activation support
  libnvdimm: Convert to DEVICE_ATTR_ADMIN_RO()
  drivers/dax: Expand lock scope to cover the use of addresses
  fs/dax: Remove unused size parameter
  dax: print error message by pr_info() in __generic_fsdax_supported()
  driver-core: Introduce DEVICE_ATTR_ADMIN_{RO,RW}
  tools/testing/nvdimm: Emulate firmware activation commands
  tools/testing/nvdimm: Prepare nfit_ctl_test() for ND_CMD_CALL emulation
  tools/testing/nvdimm: Add command debug messages
  tools/testing/nvdimm: Cleanup dimm index passing
  ACPI: NFIT: Define runtime firmware activation commands
  ACPI: NFIT: Move bus_dsm_mask out of generic nvdimm_bus_descriptor
  libnvdimm: Validate command family indices

Update the zonefs documentation to reflect the difference between a zone's
size and it's capacity.

The maximum file size in zonefs is the zones capacity, for ZBC and ZAC
based devices, which do not have a separate zone capacity, the zone
capacity is equal to the zone size.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>

In the zoned storage model, the sectors within a zone are typically all
writeable. With the introduction of the Zoned Namespace (ZNS) Command
Set in the NVM Express organization, the model was extended to have a
specific writeable capacity.

This zone capacity can be less than the overall zone size for a NVMe ZNS
device or null_blk in zoned-mode. For other ZBC/ZAC devices the zone
capacity is always equal to the zone size.

Use the zone capacity field instead from blk_zone for determining the
maximum inode size and inode blocks in zonefs.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>

Pull perf tools updates from Arnaldo Carvalho de Melo:
 "New features:

   - Introduce controlling how 'perf stat' and 'perf record' works via a
     control file descriptor, allowing starting with events configured
     but disabled until commands are received via the control file
     descriptor. This allows, for instance for tools such as Intel VTune
     to make further use of perf as its Linux platform driver.

   - Improve 'perf record' to to register in a perf.data file header the
     clockid used to help later correlate things like syslog files and
     perf events recorded.

   - Add basic syscall and find_next_bit benchmarks to 'perf bench'.

   - Allow using computed metrics in calculating other metrics. For
     instance:

	  {
	    .metric_expr    = "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit",
	    .metric_name    = "DCache_L2_All_Hits",
	  },
	  {
	    .metric_expr    = "max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + l2_rqsts.pf_miss + l2_rqsts.rfo_miss",
	    .metric_name    = "DCache_L2_All_Miss",
	  },
	  {
	     .metric_expr    = "dcache_l2_all_hits + dcache_l2_all_miss",
	     .metric_name    = "DCache_L2_All",
	  }

   - Add suport for 'd_ratio', '>' and '<' operators to the expression
     resolver used in calculating metrics in 'perf stat'.

  Support for new kernel features:

   - Support TEXT_POKE and KSYMBOL_TYPE_OOL perf metadata events to cope
     with things like ftrace, trampolines, i.e. changes in the kernel
     text that gets in the way of properly decoding Intel PT hardware
     traces, for instance.

  Intel PT:

   - Add various knobs to reduce the volume of Intel PT traces by
     reducing the level of details such as decoding just some types of
     packets (e.g., FUP/TIP, PSB+), also filtering by time range.

   - Add new itrace options (log flags to the 'd' option, error flags to
     the 'e' one, etc), controlling how Intel PT is transformed into
     perf events, document some missing options (e.g., how to synthesize
     callchains).

  BPF:

   - Properly report BPF errors when parsing events.

   - Do not setup side-band events if LIBBPF is not linked, fixing a
     segfault.

  Libraries:

   - Improvements to the libtraceevent plugin mechanism.

   - Improve libtracevent support for KVM trace events SVM exit reasons.

   - Add a libtracevent plugins for decoding syscalls/sys_enter_futex
     and for tlb_flush.

   - Ensure sample_period is set libpfm4 events in 'perf test'.

   - Fixup libperf namespacing, to make sure what is in libperf has the
     perf_ namespace while what is now only in tools/perf/ doesn't use
     that prefix.

  Arch specific:

   - Improve the testing of vendor events and metrics in 'perf test'.

   - Allow no ARM CoreSight hardware tracer sink to be specified on
     command line.

   - Fix arm_spe_x recording when mixed with other perf events.

   - Add s390 idle functions 'psw_idle' and 'psw_idle_exit' to list of
     idle symbols.

   - List kernel supplied event aliases for arm64 in 'perf list'.

   - Add support for extended register capability in PowerPC 9 and 10.

   - Added nest IMC power9 metric events.

  Miscellaneous:

   - No need to setup sample_regs_intr/sample_regs_user for dummy
     events.

   - Update various copies of kernel headers, some causing perf to
     handle new syscalls, MSRs, etc.

   - Improve usage of flex and yacc, enabling warnings and addressing
     the fallout.

   - Add missing '--output' option to 'perf kmem' so that it can pass it
     along to 'perf record'.

   - 'perf probe' fixes related to adding multiple probes on the same
     address for the same event.

   - Make 'perf probe' warn if the target function is a GNU indirect
     function.

   - Remove //anon mmap events from 'perf inject jit' to fix supporting
     both using ELF files for generated functions and the perf-PID.map
     approaches"

* tag 'perf-tools-2020-08-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (144 commits)
  perf record: Skip side-band event setup if HAVE_LIBBPF_SUPPORT is not set
  perf tools powerpc: Add support for extended regs in power10
  perf tools powerpc: Add support for extended register capability
  tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
  tools arch x86: Sync asm/cpufeatures.h with the kernel sources
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  tools headers UAPI: update linux/in.h copy
  tools headers API: Update close_range affected files
  perf script: Add 'tod' field to display time of day
  perf script: Change the 'enum perf_output_field' enumerators to be 64 bits
  perf data: Add support to store time of day in CTF data conversion
  perf tools: Move clockid_res_ns under clock struct
  perf header: Store clock references for -k/--clockid option
  perf tools: Add clockid_name function
  perf clockid: Move parse_clockid() to new clockid object
  tools lib traceevent: Handle possible strdup() error in tep_add_plugin_path() API
  libtraceevent: Fixed description of tep_add_plugin_path() API
  libtraceevent: Fixed type in PRINT_FMT_STING
  libtraceevent: Fixed broken indentation in parse_ip4_print_args()
  libtraceevent: Improve error handling of tep_plugin_add_option() API
  ...

Pull ktest updates from Steven Rostedt:

 - Have config-bisect save the good/bad configs at each step.

 - Show log file location even on success

 - Add PRE_TEST_DIE to kill test if the PRE_TEST fails

 - Add a NOT operator for conditionals in config file

 - Add the log output of the last test when emailing on failure.

 - Other minor clean ups and small fixes.

* tag 'ktest-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest.pl: Fix spelling mistake "Cant" -> "Can't"
  ktest.pl: Change the logic to control the size of the log file emailed
  ktest.pl: Add MAIL_MAX_SIZE to limit the amount of log emailed
  ktest.pl: Add the log of last test in email on failure
  ktest.pl: Turn off buffering to the log file
  ktest.pl: Just open up the log file once
  ktest.pl: Add a NOT operator
  ktest.pl: Define PRE_TEST_DIE to kill the test if the PRE_TEST fails
  ktest.pl: Always show log file location if defined even on success
  ktest.pl: Have config-bisect save each config used in the bisect

Pull locking updates from Thomas Gleixner:
 "A set of locking fixes and updates:

   - Untangle the header spaghetti which causes build failures in
     various situations caused by the lockdep additions to seqcount to
     validate that the write side critical sections are non-preemptible.

   - The seqcount associated lock debug addons which were blocked by the
     above fallout.

     seqcount writers contrary to seqlock writers must be externally
     serialized, which usually happens via locking - except for strict
     per CPU seqcounts. As the lock is not part of the seqcount, lockdep
     cannot validate that the lock is held.

     This new debug mechanism adds the concept of associated locks.
     sequence count has now lock type variants and corresponding
     initializers which take a pointer to the associated lock used for
     writer serialization. If lockdep is enabled the pointer is stored
     and write_seqcount_begin() has a lockdep assertion to validate that
     the lock is held.

     Aside of the type and the initializer no other code changes are
     required at the seqcount usage sites. The rest of the seqcount API
     is unchanged and determines the type at compile time with the help
     of _Generic which is possible now that the minimal GCC version has
     been moved up.

     Adding this lockdep coverage unearthed a handful of seqcount bugs
     which have been addressed already independent of this.

     While generally useful this comes with a Trojan Horse twist: On RT
     kernels the write side critical section can become preemtible if
     the writers are serialized by an associated lock, which leads to
     the well known reader preempts writer livelock. RT prevents this by
     storing the associated lock pointer independent of lockdep in the
     seqcount and changing the reader side to block on the lock when a
     reader detects that a writer is in the write side critical section.

   - Conversion of seqcount usage sites to associated types and
     initializers"

* tag 'locking-urgent-2020-08-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
  locking/seqlock, headers: Untangle the spaghetti monster
  locking, arch/ia64: Reduce <asm/smp.h> header dependencies by moving XTP bits into the new <asm/xtp.h> header
  x86/headers: Remove APIC headers from <asm/smp.h>
  seqcount: More consistent seqprop names
  seqcount: Compress SEQCNT_LOCKNAME_ZERO()
  seqlock: Fold seqcount_LOCKNAME_init() definition
  seqlock: Fold seqcount_LOCKNAME_t definition
  seqlock: s/__SEQ_LOCKDEP/__SEQ_LOCK/g
  hrtimer: Use sequence counter with associated raw spinlock
  kvm/eventfd: Use sequence counter with associated spinlock
  userfaultfd: Use sequence counter with associated spinlock
  NFSv4: Use sequence counter with associated spinlock
  iocost: Use sequence counter with associated spinlock
  raid5: Use sequence counter with associated spinlock
  vfs: Use sequence counter with associated spinlock
  timekeeping: Use sequence counter with associated raw spinlock
  xfrm: policy: Use sequence counters with associated lock
  netfilter: nft_set_rbtree: Use sequence counter with associated rwlock
  netfilter: conntrack: Use sequence counter with associated spinlock
  sched: tasks: Use sequence counter with associated spinlock
  ...

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've added two small interfaces: (a) GC_URGENT_LOW
  mode for performance and (b) F2FS_IOC_SEC_TRIM_FILE ioctl for
  security.

  The new GC mode allows Android to run some lower priority GCs in
  background, while new ioctl discards user information without race
  condition when the account is removed.

  In addition, some patches were merged to address latency-related
  issues. We've fixed some compression-related bug fixes as well as edge
  race conditions.

  Enhancements:
   - add GC_URGENT_LOW mode in gc_urgent
   - introduce F2FS_IOC_SEC_TRIM_FILE ioctl
   - bypass racy readahead to improve read latencies
   - shrink node_write lock coverage to avoid long latency

  Bug fixes:
   - fix missing compression flag control, i_size, and mount option
   - fix deadlock between quota writes and checkpoint
   - remove inode eviction path in synchronous path to avoid deadlock
   - fix to wait GCed compressed page writeback
   - fix a kernel panic in f2fs_is_compressed_page
   - check page dirty status before writeback
   - wait page writeback before update in node page write flow
   - fix a race condition between f2fs_write_end_io and f2fs_del_fsync_node_entry

  We've added some minor sanity checks and refactored trivial code
  blocks for better readability and debugging information"

* tag 'f2fs-for-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (52 commits)
  f2fs: prepare a waiter before entering io_schedule
  f2fs: update_sit_entry: Make the judgment condition of f2fs_bug_on more intuitive
  f2fs: replace test_and_set/clear_bit() with set/clear_bit()
  f2fs: make file immutable even if releasing zero compression block
  f2fs: compress: disable compression mount option if compression is off
  f2fs: compress: add sanity check during compressed cluster read
  f2fs: use macro instead of f2fs verity version
  f2fs: fix deadlock between quota writes and checkpoint
  f2fs: correct comment of f2fs_exist_written_data
  f2fs: compress: delay temp page allocation
  f2fs: compress: fix to update isize when overwriting compressed file
  f2fs: space related cleanup
  f2fs: fix use-after-free issue
  f2fs: Change the type of f2fs_flush_inline_data() to void
  f2fs: add F2FS_IOC_SEC_TRIM_FILE ioctl
  f2fs: should avoid inode eviction in synchronous path
  f2fs: segment.h: delete a duplicated word
  f2fs: compress: fix to avoid memory leak on cc->cpages
  f2fs: use generic names for generic ioctls
  f2fs: don't keep meta inode pages used for compressed block migration
  ...

Pull gfs2 updates from Andreas Gruenbacher:

 - Make sure transactions won't be started recursively in
   gfs2_block_zero_range (bug introduced in 5.4 when switching to
   iomap_zero_range)

 - Fix a glock holder refcount leak introduced in the iopen glock
   locking scheme rework merged in 5.8.

 - A few other small improvements (debugging, stack usage, comment
   fixes).

* tag 'gfs2-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: When gfs2_dirty_inode gets a glock error, dump the glock
  gfs2: Never call gfs2_block_zero_range with an open transaction
  gfs2: print details on transactions that aren't properly ended
  gfs2: Fix inaccurate comment
  fs: Fix typo in comment
  gfs2: Fix refcount leak in gfs2_glock_poke
  gfs2: Pass glock holder to gfs2_file_direct_{read,write}
  gfs2: Add some flags missing from glock output

Pull JFFS2, UBI and UBIFS updates from Richard Weinberger:
 "JFFS2:
   - Fix for a corner case while mounting
   - Fix for an use-after-free issue

  UBI:
   - Fix for a memory load while attaching
   - Don't produce an anchor PEB with fastmap being disabled

  UBIFS:
   - Fix for orphan inode logic
   - Spelling fixes
   - New mount option to specify filesystem version"

* tag 'for-linus-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
  jffs2: fix UAF problem
  jffs2: fix jffs2 mounting failure
  ubifs: Fix wrong orphan node deletion in ubifs_jnl_update|rename
  ubi: fastmap: Free fastmap next anchor peb during detach
  ubi: fastmap: Don't produce the initial next anchor PEB when fastmap is disabled
  ubifs: misc.h: delete a duplicated word
  ubifs: add option to specify version for new file systems

Pull input updates from Dmitry Torokhov:

 - an update to Elan touchpad controller driver supporting newer ICs
   with enhanced precision reports and a new firmware update process

 - an update to EXC3000 touch controller supporting additional parts

 - assorted driver fixups

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (27 commits)
  Input: exc3000 - add support to query model and fw_version
  Input: exc3000 - add reset gpio support
  Input: exc3000 - add EXC80H60 and EXC80H84 support
  dt-bindings: touchscreen: Convert EETI EXC3000 touchscreen to json-schema
  Input: sentelic - fix error return when fsp_reg_write fails
  Input: alps - remove redundant assignment to variable ret
  Input: ims-pcu - return error code rather than -ENOMEM
  Input: elan_i2c - add ic type 0x15
  Input: atmel_mxt_ts - only read messages in mxt_acquire_irq() when necessary
  Input: uinput - fix typo in function name documentation
  Input: ati_remote2 - add missing newlines when printing module parameters
  Input: psmouse - add a newline when printing 'proto' by sysfs
  Input: synaptics-rmi4 - drop a duplicated word
  Input: elan_i2c - add support for high resolution reports
  Input: elan_i2c - do not constantly re-query pattern ID
  Input: elan_i2c - add firmware update info for ICs 0x11, 0x13, 0x14
  Input: elan_i2c - handle firmware updated on newer ICs
  Input: elan_i2c - add support for different firmware page sizes
  Input: elan_i2c - fix detecting IAP version on older controllers
  Input: elan_i2c - handle devices with patterns above 1
  ...

Pull HID updates from Jiri Kosina:

 - fix for some modern devices that return multi-byte battery report,
   from Grant Likely

 - fix for devices with Resolution Multiplier, from Peter Hutterer

 - device probing speed increase, from Dmitry Torokhov

 - ThinkPad 10 Ultrabook Keyboard support, from Hans de Goede

 - other small assorted fixes and device ID additions

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: quirks: add NOGET quirk for Logitech GROUP
  HID: Replace HTTP links with HTTPS ones
  HID: udraw-ps3: Replace HTTP links with HTTPS ones
  HID: mcp2221: Replace HTTP links with HTTPS ones
  HID: input: Fix devices that return multiple bytes in battery report
  HID: lenovo: Fix spurious F23 key press report during resume from suspend
  HID: lenovo: Add ThinkPad 10 Ultrabook Keyboard fn_lock support
  HID: lenovo: Add ThinkPad 10 Ultrabook Keyboard support
  HID: lenovo: Rename fn_lock sysfs attr handlers to make them generic
  HID: lenovo: Factor out generic parts of the LED code
  HID: lenovo: Merge tpkbd and cptkbd data structures
  HID: intel-ish-hid: Replace PCI_DEV_FLAGS_NO_D3 with pci_save_state
  HID: Wiimote: Treat the d-pad as an analogue stick
  HID: input: do not run GET_REPORT unless there's a Resolution Multiplier
  HID: usbhid: remove redundant assignment to variable retval
  HID: usbhid: do not sleep when opening device

There is a spelling mistake in an error message. Fix it.

Link: https://lkml.kernel.org/r/20200810100750.61475-1-colin.king@canonical.comSigned-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

If the log file for a given test is larger than the max size given then use
set the seek from the end of the log file instead of from the start of the
test.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

VDPA mlx5 accesses config space as native endian - this is
wrong since it's a modern device and actually uses LE.

It only supports modern guests so we could punt and
just force LE, but let's use the full virtio APIs since people
tend to copy/paste code, and this is not data path anyway.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

If "offset" is non-zero then we end up copying from beyond the end of
the config because of pointer math.  We can fix this by casting the
struct to a u8 pointer.

Fixes: 2c53d0f6 ("vdpasim: vDPA device simulator")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200406144552.GF68494@mwandaSigned-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>

Commit ea0eada4 leads to the following build failure on powerpc:

  HOSTCC  scripts/recordmcount
scripts/recordmcount.c: In function 'arm64_is_fake_mcount':
scripts/recordmcount.c:440: error: 'R_AARCH64_CALL26' undeclared (first use in this function)
scripts/recordmcount.c:440: error: (Each undeclared identifier is reported only once
scripts/recordmcount.c:440: error: for each function it appears in.)
make[2]: *** [scripts/recordmcount] Error 1

Make sure R_AARCH64_CALL26 is always defined.

Fixes: ea0eada4 ("recordmcount: only record relocation of type R_AARCH64_CALL26 on arm64.")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Gregory Herrero <gregory.herrero@oracle.com>
Cc: Gregory Herrero <gregory.herrero@oracle.com>
Link: https://lore.kernel.org/r/5ca1be21fa6ebf73203b45fd9aadd2bafb5e6b15.1597049145.git.christophe.leroy@csgroup.euSigned-off-by: Catalin Marinas <catalin.marinas@arm.com>

There is a pointer math bug here so if "offset" is non-zero then this
will copy memory from beyond the end of the array.

Fixes: 1a86b377 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200808093241.GB115053@mwandaSigned-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Eli Cohen <elic@nvidia.com>
Cc: Jason Wang <jasowang@redhat.com>; Parav Pandit <parav@mellanox.com>; virtualization@lists.linux-foundation.org; linux-kernel@vger.kernel.org; kernel-janitors@vger.kernel.org
Fixes: 1a86b377 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

The memory allocation failure checking for in and out is currently
checking if the pointers are valid rather than the contents of what
they point to. Hence the null check on failed memory allocations is
incorrect.  Fix this by adding the missing indirection in the check.
Also for the default case, just set the *in and *out to null as
these don't have any thing allocated to kfree. Finally remove the
redundant *in and *out check as these have been already done on each
allocation in the case statement.

Addresses-Coverity: ("Null pointer dereference")
Fixes: 1a86b377 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200806160828.90463-1-colin.king@canonical.comSigned-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eli Cohen <eli@mellanox.com>

If the kernel is unable to allocate memory for the variable dmr then
err will be returned without being set. Set err to -ENOMEM in this
case.

Fixes: 94abbccd ("vdpa/mlx5: Add shared memory registration code")
Addresses-Coverity: ("Uninitialized variables")
Signed-off-by: Alex Dewar <alex.dewar@gmx.co.uk>
Link: https://lore.kernel.org/r/20200806185625.67344-1-alex.dewar@gmx.co.ukSigned-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eli Cohen <eli@mellanox.com>