Yishai Hadas Says:
====================
Expose raw packet pacing APIs to be used by DEVX based applications. The
existing code was refactored to have a single flow with the new raw APIs.
====================
Based on the mlx5-next branch at
git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
Due to dependencies
* branch 'mlx5_packet_pacing':
IB/mlx5: Introduce UAPIs to manage packet pacing
net/mlx5: Expose raw packet pacing APIs
Introduce packet pacing uobject and its alloc and destroy
methods.
This uobject holds mlx5 packet pacing context according to the device
specification and enables managing packet pacing device entries that are
needed by DEVX applications.
Link: https://lore.kernel.org/r/20200219190518.200912-3-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Expose raw packet pacing APIs to be used by DEVX based applications.
The existing code was refactored to have a single flow with the new raw
APIs.
The new raw APIs considered the input of 'pp_rate_limit_context', uid,
'dedicated', upon looking for an existing entry.
This raw mode enables future device specification data in the raw
context without changing the existing logic and code.
The ability to ask for a dedicated entry gives control for application
to allocate entries according to its needs.
A dedicated entry may not be used by some other process and it also
enables the process spreading its resources to some different entries
for use different hardware resources as part of enforcing the rate.
The counter per entry was changed to be u64 to prevent any option to
overflow.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Holding the rtnl_lock while iterating a devices interface address list
potentially causes deadlocks with the cma_netdev_callback. While this was
implemented to limit the scope of a wildcard listen to addresses of the
current device only, a better solution limits the scope of the socket to
the device. This completely avoiding locking, and also results in
significant code simplification.
Fixes: c421651fa2 ("RDMA/siw: Add missing rtnl_lock around access to ifa")
Link: https://lore.kernel.org/r/20200228173534.26815-1-bmt@zurich.ibm.com
Reported-by: syzbot+55de90ab5f44172b0c90@syzkaller.appspotmail.com
Suggested-by: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Cited commit missed to include low level congestion control related
debugfs stage initialization. This resulted in missing debugfs entries
for cc_params of a RDMA device.
Add them back.
Fixes: b5ca15ad7e ("IB/mlx5: Add proper representors support")
Link: https://lore.kernel.org/r/20200227125407.99803-1-leon@kernel.org
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Add two debugfs parameters described below.
np_min_time_between_cnps - Minimum time between sending CNPs from the
port.
Unit = microseconds.
Default = 0 (no min wait time; generated
based on incoming ECN marked packets).
rp_max_rate - Maximum rate at which reaction point node can transmit.
Once this limit is reached, RP is no longer rate limited.
Unit = Mbits/sec
Default = 0 (full speed)
Link: https://lore.kernel.org/r/20200227125246.99472-1-leon@kernel.org
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Commit f164be8c03 ("IB/mlx5: Extend caps stage to handle VAR
capabilities") introduced a straight "/" division of the u64 variable
"bar_size".
This was fixed with commit 685eff5131 ("IB/mlx5: Use div64_u64 for
num_var_hw_entries calculation"). However, div64_u64() is redundant here
as mlx5_var_table::stride_size is of type u32. Make the actual code way
more optimized on 32-bit kernels using div_u64() and fix 80 chars
break-through by the way.
Fixes: 685eff5131 ("IB/mlx5: Use div64_u64 for num_var_hw_entries calculation")
Link: https://lore.kernel.org/r/20200217073629.8051-1-alobakin@dlink.ru
Signed-off-by: Alexander Lobakin <alobakin@dlink.ru>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
-----BEGIN PGP SIGNATURE-----
iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAl5cOX8eHHRvcnZhbGRz
QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGw0AH/0nex1uEpzUTm+Gw
D8QPFr3y61sYLu7sIMVt39+Zl6OSxvOOX14QIM/mrNrzjjRI8EXGvYgES5gSO4on
6NLS6/64c1oQThDHCsxusKoSWLZ9KqP2vRPt7tZjn7DZMzEsuLhlINKBeupcqALX
FnOBr768P+if/j0WcDR2pBaMg3ch+XC5sfYav7kapjgWUqCx9BvrHKLXXdlEGUC0
7Ku7PH+nF7CIHiTay+i89odvOd8aLGsa/SUf5XGauKkH65VgQkmksgPeZUPqTnyC
MEsyLJLfn4AP3ySwqzfSLac8jqZG8FGBt4DgM2MQBHibctzfeMIznfcfh/A8+Edx
jqLKLAs=
=4075
-----END PGP SIGNATURE-----
Merge tag 'v5.6-rc4' into rdma.git for-next
Required due to dependencies in following patches.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The proper return code is "-EOPNOTSUPP" when the requested QP type is
not supported by the provider.
Link: https://lore.kernel.org/r/20200130082049.463-1-kamalheib1@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Relaxed ordering is not supported in UMR so we are disabling UMR usage
when user passes relaxed ordering access flag.
Enable using UMR when user requested relaxed ordering but there are no
relaxed ordering capabilities.
This will prevent user from unnecessarily registering a new mkey.
Fixes: d6de0bb185 ("RDMA/mlx5: Set relaxed ordering when requested")
Link: https://lore.kernel.org/r/20200227113834.94233-1-leon@kernel.org
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/infiniband/hw/bnxt_re/qplib_rcfw.c: In function '__send_message':
drivers/infiniband/hw/bnxt_re/qplib_rcfw.c:101:10: warning:
variable 'idx' set but not used [-Wunused-but-set-variable]
drivers/infiniband/hw/bnxt_re/qplib_rcfw.c:101:6: warning:
variable 'pg' set but not used [-Wunused-but-set-variable]
commit cee0c7bba4 ("RDMA/bnxt_re: Refactor command queue management
code") involved this, but not used.
Link: https://lore.kernel.org/r/20200227064900.92255-1-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/infiniband/hw/bnxt_re/ib_verbs.c: In function 'bnxt_re_create_gsi_qp':
drivers/infiniband/hw/bnxt_re/ib_verbs.c:1283:30: warning:
variable 'dev_attr' set but not used [-Wunused-but-set-variable]
commit 8dae419f9e ("RDMA/bnxt_re: Refactor queue pair creation code")
involved this, but not used, so remove it.
Link: https://lore.kernel.org/r/20200227064542.91205-1-yuehaibing@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/infiniband/hw/bnxt_re/qplib_res.c: In function '__alloc_pbl':
drivers/infiniband/hw/bnxt_re/qplib_res.c:109:13: warning:
variable 'pg_size' set but not used [-Wunused-but-set-variable]
commit 0c4dcd6028 ("RDMA/bnxt_re: Refactor hardware queue memory
allocation") involved this, but not used, so remove it.
Link: https://lore.kernel.org/r/20200227064209.87893-1-yuehaibing@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Using the new unregister APIs provided by the core. Provide the
dealloc_driver hook for the core to callback at the time of device
un-registration.
bnxt_re VF resources are created by the corresponding PF driver. During
ib_unregister_driver, PF might get removed before VF and this could cause
failure when VFs are removed. Driver is explicitly queuing the removal of
VF devices before calling ib_unregister_driver.
Link: https://lore.kernel.org/r/1582731932-26574-3-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
- bnxt_re_ib_reg() handles two main functionalities - initializing the
device and registering with the IB stack. Split it into 2 functions
i.e. bnxt_re_dev_init() and bnxt_re_ib_init() to account for the same
thereby improve modularity. Do the same for
bnxt_re_ib_unreg()i.e. split into two functions - bnxt_re_dev_uninit()
and bnxt_re_ib_uninit().
- Simplify the code by combining the different steps to add and remove
the device into two functions.
- Report correct netdev link state during device register
Link: https://lore.kernel.org/r/1582731932-26574-2-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAl5cMPoACgkQ8vlZVpUN
gaNYmgf/WX4/jMSYQu2fICudCqLr5fkLqsybvYGZGei3F8BaJ90zohQAQybNznWS
iyF0JzrOp37b/o0haz7KfDr7xVB3lAVsKu9Bglq+zL8mc9IkPmjhCXuLbknUtOUw
j3aVdntt4d6S3szbtP4PIZxNqh+/4KJDS2soWvuNWRpYMOv2yoMClptWWQtsimAt
3fYpxasSz0Jrhtbuf+I1oID++wOycDT3RKiko5tpLlQiFVoKBzfou+0ZdkC4+UIl
KvcpMBm1ijdGAaN9jfb2L2KCY5UdSvmeVui3sMXtHBEpKMJl2QsClylR1wGfgBKi
+YMEsjBONxKo3kH2DaPJaU6LEm8JuQ==
=rszH
-----END PGP SIGNATURE-----
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Two more bug fixes (including a regression) for 5.6"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: potential crash on allocation error in ext4_alloc_flex_bg_array()
jbd2: fix data races at struct journal_head
as too large frame sizes on some configurations. On the
ARM side, the compiler was messing up shadow stacks between
EL1 and EL2 code, which is easily fixed with __always_inline.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)
iQEcBAABAgAGBQJeXAT4AAoJEL/70l94x66DWywH/1kv4MmeGo6PI0Nxk/yvA7X8
78iqIBchtxZX0v/9kqpTB7bYmHyTgmZHM+IkwtIUANDSaOvWqJwU+TLUfduOiuXF
NxBHcZDyuMoftX5CSQ+bJ5PwxKijAdJsIkCZ13CnsTCkwcfamSGypFUCK8LacPeq
WHvV5Ws5pFc51xrP3CH1DrRhLoulaBmt5xxqK9fxWtslrlsnm1uNza5vs8As8CzM
apnmdRIf5p4v91Zic3PFH7/GXES0m1tjIBKdtZ4YHb8yrXV/kBsEVhhTjqE9mrUq
qtRRl5waOFoP4yc9ey52PAbMm1x1Ho/pyunpM0xh40Yq8OPFwqXBPTnWfobSoiM=
=LNQc
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"More bugfixes, including a few remaining "make W=1" issues such as too
large frame sizes on some configurations.
On the ARM side, the compiler was messing up shadow stacks between EL1
and EL2 code, which is easily fixed with __always_inline"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: VMX: check descriptor table exits on instruction emulation
kvm: x86: Limit the number of "kvm: disabled by bios" messages
KVM: x86: avoid useless copy of cpufreq policy
KVM: allow disabling -Werror
KVM: x86: allow compiling as non-module with W=1
KVM: Pre-allocate 1 cpumask variable per cpu for both pv tlb and pv ipis
KVM: Introduce pv check helpers
KVM: let declaration of kvm_get_running_vcpus match implementation
KVM: SVM: allocate AVIC data structures based on kvm_amd module parameter
arm64: Ask the compiler to __always_inline functions used by KVM at HYP
KVM: arm64: Define our own swab32() to avoid a uapi static inline
KVM: arm64: Ask the compiler to __always_inline functions used at HYP
kvm: arm/arm64: Fold VHE entry/exit work into kvm_vcpu_run_vhe()
KVM: arm/arm64: Fix up includes for trace.h
KVM emulates UMIP on hardware that doesn't support it by setting the
'descriptor table exiting' VM-execution control and performing
instruction emulation. When running nested, this emulation is broken as
KVM refuses to emulate L2 instructions by default.
Correct this regression by allowing the emulation of descriptor table
instructions if L1 hasn't requested 'descriptor table exiting'.
Fixes: 07721feee4 ("KVM: nVMX: Don't emulate instructions in guest mode")
Reported-by: Jan Kiszka <jan.kiszka@web.de>
Cc: stable@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jim Mattson <jmattson@google.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Pull i2c fixes from Wolfram Sang:
"I2C has three driver bugfixes for you. We agreed on the Mac regression
to go in via I2C"
* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
macintosh: therm_windtunnel: fix regression when instantiating devices
i2c: altera: Fix potential integer overflow
i2c: jz4780: silence log flood on txabrt
If sbi->s_flex_groups_allocated is zero and the first allocation fails
then this code will crash. The problem is that "i--" will set "i" to
-1 but when we compare "i >= sbi->s_flex_groups_allocated" then the -1
is type promoted to unsigned and becomes UINT_MAX. Since UINT_MAX
is more than zero, the condition is true so we call kvfree(new_groups[-1]).
The loop will carry on freeing invalid memory until it crashes.
Fixes: 7c990728b9 ("ext4: fix potential race between s_flex_groups online resizing and access")
Reviewed-by: Suraj Jitindar Singh <surajjs@amazon.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20200228092142.7irbc44yaz3by7nb@kili.mountain
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Removing attach_adapter from this driver caused a regression for at
least some machines. Those machines had the sensors described in their
DT, too, so they didn't need manual creation of the sensor devices. The
old code worked, though, because manual creation came first. Creation of
DT devices then failed later and caused error logs, but the sensors
worked nonetheless because of the manually created devices.
When removing attach_adaper, manual creation now comes later and loses
the race. The sensor devices were already registered via DT, yet with
another binding, so the driver could not be bound to it.
This fix refactors the code to remove the race and only manually creates
devices if there are no DT nodes present. Also, the DT binding is updated
to match both, the DT and manually created devices. Because we don't
know which device creation will be used at runtime, the code to start
the kthread is moved to do_probe() which will be called by both methods.
Fixes: 3e7bed5271 ("macintosh: therm_windtunnel: drop using attach_adapter")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=201723
Reported-by: Erhard Furtner <erhard_f@mailbox.org>
Tested-by: Erhard Furtner <erhard_f@mailbox.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org # v4.19+
journal_head::b_transaction and journal_head::b_next_transaction could
be accessed concurrently as noticed by KCSAN,
LTP: starting fsync04
/dev/zero: Can't open blockdev
EXT4-fs (loop0): mounting ext3 file system using the ext4 subsystem
EXT4-fs (loop0): mounted filesystem with ordered data mode. Opts: (null)
==================================================================
BUG: KCSAN: data-race in __jbd2_journal_refile_buffer [jbd2] / jbd2_write_access_granted [jbd2]
write to 0xffff99f9b1bd0e30 of 8 bytes by task 25721 on cpu 70:
__jbd2_journal_refile_buffer+0xdd/0x210 [jbd2]
__jbd2_journal_refile_buffer at fs/jbd2/transaction.c:2569
jbd2_journal_commit_transaction+0x2d15/0x3f20 [jbd2]
(inlined by) jbd2_journal_commit_transaction at fs/jbd2/commit.c:1034
kjournald2+0x13b/0x450 [jbd2]
kthread+0x1cd/0x1f0
ret_from_fork+0x27/0x50
read to 0xffff99f9b1bd0e30 of 8 bytes by task 25724 on cpu 68:
jbd2_write_access_granted+0x1b2/0x250 [jbd2]
jbd2_write_access_granted at fs/jbd2/transaction.c:1155
jbd2_journal_get_write_access+0x2c/0x60 [jbd2]
__ext4_journal_get_write_access+0x50/0x90 [ext4]
ext4_mb_mark_diskspace_used+0x158/0x620 [ext4]
ext4_mb_new_blocks+0x54f/0xca0 [ext4]
ext4_ind_map_blocks+0xc79/0x1b40 [ext4]
ext4_map_blocks+0x3b4/0x950 [ext4]
_ext4_get_block+0xfc/0x270 [ext4]
ext4_get_block+0x3b/0x50 [ext4]
__block_write_begin_int+0x22e/0xae0
__block_write_begin+0x39/0x50
ext4_write_begin+0x388/0xb50 [ext4]
generic_perform_write+0x15d/0x290
ext4_buffered_write_iter+0x11f/0x210 [ext4]
ext4_file_write_iter+0xce/0x9e0 [ext4]
new_sync_write+0x29c/0x3b0
__vfs_write+0x92/0xa0
vfs_write+0x103/0x260
ksys_write+0x9d/0x130
__x64_sys_write+0x4c/0x60
do_syscall_64+0x91/0xb05
entry_SYSCALL_64_after_hwframe+0x49/0xbe
5 locks held by fsync04/25724:
#0: ffff99f9911093f8 (sb_writers#13){.+.+}, at: vfs_write+0x21c/0x260
#1: ffff99f9db4c0348 (&sb->s_type->i_mutex_key#15){+.+.}, at: ext4_buffered_write_iter+0x65/0x210 [ext4]
#2: ffff99f5e7dfcf58 (jbd2_handle){++++}, at: start_this_handle+0x1c1/0x9d0 [jbd2]
#3: ffff99f9db4c0168 (&ei->i_data_sem){++++}, at: ext4_map_blocks+0x176/0x950 [ext4]
#4: ffffffff99086b40 (rcu_read_lock){....}, at: jbd2_write_access_granted+0x4e/0x250 [jbd2]
irq event stamp: 1407125
hardirqs last enabled at (1407125): [<ffffffff980da9b7>] __find_get_block+0x107/0x790
hardirqs last disabled at (1407124): [<ffffffff980da8f9>] __find_get_block+0x49/0x790
softirqs last enabled at (1405528): [<ffffffff98a0034c>] __do_softirq+0x34c/0x57c
softirqs last disabled at (1405521): [<ffffffff97cc67a2>] irq_exit+0xa2/0xc0
Reported by Kernel Concurrency Sanitizer on:
CPU: 68 PID: 25724 Comm: fsync04 Tainted: G L 5.6.0-rc2-next-20200221+ #7
Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40 07/10/2019
The plain reads are outside of jh->b_state_lock critical section which result
in data races. Fix them by adding pairs of READ|WRITE_ONCE().
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Qian Cai <cai@lca.pw>
Link: https://lore.kernel.org/r/20200222043111.2227-1-cai@lca.pw
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Four small fixes. Three are in drivers for fairly obvious bugs. The
fourth is a set of regressions introduced by the compat_ioctl changes
because some of the compat updates wrongly replaced .ioctl instead of
.compat_ioctl.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
-----BEGIN PGP SIGNATURE-----
iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCXlpxDCYcamFtZXMuYm90
dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishSXsAPwOGPkU
ObFbUs75Tdmk1M7jqtxgBsNhuNta0S8d7dJ3aAEA/YBtGGQWoeEGivUKwzwA4cwL
1w1GbhPEblpMNO8keVA=
=I7qk
-----END PGP SIGNATURE-----
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Four small fixes.
Three are in drivers for fairly obvious bugs. The fourth is a set of
regressions introduced by the compat_ioctl changes because some of the
compat updates wrongly replaced .ioctl instead of .compat_ioctl"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: compat_ioctl: cdrom: Replace .ioctl with .compat_ioctl in four appropriate places
scsi: zfcp: fix wrong data and display format of SFP+ temperature
scsi: sd_sbc: Fix sd_zbc_report_zones()
scsi: libfc: free response frame from GPN_ID
-----BEGIN PGP SIGNATURE-----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=WheR
-----END PGP SIGNATURE-----
Merge tag 'io_uring-5.6-2020-02-28' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
- Fix for a race with IOPOLL used with SQPOLL (Xiaoguang)
- Only show ->fdinfo if procfs is enabled (Tobias)
- Fix for a chain with multiple personalities in the SQEs
- Fix for a missing free of personality idr on exit
- Removal of the spin-for-work optimization
- Fix for next work lookup on request completion
- Fix for non-vec read/write result progation in case of links
- Fix for a fileset references on switch
- Fix for a recvmsg/sendmsg 32-bit compatability mode
* tag 'io_uring-5.6-2020-02-28' of git://git.kernel.dk/linux-block:
io_uring: fix 32-bit compatability with sendmsg/recvmsg
io_uring: define and set show_fdinfo only if procfs is enabled
io_uring: drop file set ref put/get on switch
io_uring: import_single_range() returns 0/-ERROR
io_uring: pick up link work on submit reference drop
io-wq: ensure work->task_pid is cleared on init
io-wq: remove spin-for-work optimization
io_uring: fix poll_list race for SETUP_IOPOLL|SETUP_SQPOLL
io_uring: fix personality idr leak
io_uring: handle multiple personalities in link chains
Fix a couple of configuration issues in the ACPI watchdog (WDAT)
driver (Mika Westerberg) and make it possible to disable that
driver at boot time in case it still does not work as
expected (Jean Delvare).
-----BEGIN PGP SIGNATURE-----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=eIlw
-----END PGP SIGNATURE-----
Merge tag 'acpi-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"Fix a couple of configuration issues in the ACPI watchdog (WDAT)
driver (Mika Westerberg) and make it possible to disable that driver
at boot time in case it still does not work as expected (Jean
Delvare)"
* tag 'acpi-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: watchdog: Set default timeout in probe
ACPI: watchdog: Fix gas->access_width usage
ACPICA: Introduce ACPI_ACCESS_BYTE_WIDTH() macro
ACPI: watchdog: Allow disabling WDAT at boot
Fix a recent cpufreq initialization regression (Rafael Wysocki),
revert a devfreq commit that made incompatible changes and broke
user land on some systems (Orson Zhai), drop a stale reference to
a document that has gone away recently (Jonathan Neuschäfer) and
fix a typo in a hibernation code comment (Alexandre Belloni).
-----BEGIN PGP SIGNATURE-----
iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl5Y6MYSHHJqd0Byand5
c29ja2kubmV0AAoJEILEb/54YlRxqCAP/3zmwDsBMG07c+g9kOEJzuGLkpUrGIFp
t1vR2+EmV7bCq7onCLSBz090wvogLCmNPpXmq45Ddt5hx3ltZSx4stwYdbsS/xmU
t+9pFiCSSFufs1vaUzZqCuw53jpizRD4KKoUbCT2kpCgH4wjF7ftRIC5y2DYI57Y
hOIfrI9XzwR2UZYRWZqCYtwpPkMicao8lXLfhs1mrZFk+AxwwwUFSp8/Gw94LBPD
+ESctvsrGfmqEDEvcZUaYd2i0i5PsqnbnVy6wxWb3rhmhSXJTfiCzCGECItBJuSA
HcZj3m2dohOXDxXK/Yevwiv+fBkqeeeP+KVlvtjzmYzTDW1bryLYQpxAsdpeYGEE
bANjAl6MARqBDKUjvw+N6yDdAPPNbsT6zEK3f0w4eQNRpfmjhHP7TxrOsjC0DRJu
EZpN6hWGQs1Vmndr+xaK0ITeRXB+7IQeXG6t6XDYZg2gS65hkhF5z1E5vjmn1Cen
wpQsqvek6K7/DqqLqCH27yATNNKff7PNNCfpIazPE6CjDKBAiM9jsMpWkQf4E9/7
VKJFzmhy5P9VsHnUNonRN1K8Vl5eo+b7YOfmR8kvfsmNpfvKqaXM813owVMkOEq6
44kc2D38t3TnlH+GNgGfyPBnHchqlw/P0y0mypQ73Wyg+PQB+fx+W9vAXWDe6fBW
/tIhZYILu90f
=ySea
-----END PGP SIGNATURE-----
Merge tag 'pm-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Fix a recent cpufreq initialization regression (Rafael Wysocki),
revert a devfreq commit that made incompatible changes and broke user
land on some systems (Orson Zhai), drop a stale reference to a
document that has gone away recently (Jonathan Neuschäfer), and fix a
typo in a hibernation code comment (Alexandre Belloni)"
* tag 'pm-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: Fix policy initialization for internal governor drivers
Revert "PM / devfreq: Modify the device name as devfreq(X) for sysfs"
PM / hibernate: fix typo "reserverd_size" -> "reserved_size"
Documentation: power: Drop reference to interface.rst
Two fixes in this pull request:
* Revert the initial decision to silently ignore IOCB_NOWAIT for
asynchronous direct IOs to sequential zone files. Instead, return an
error to the user to signal that the feature is not supported (from
Christoph)
* A fix to zonefs Kconfig to select FS_IOMAP to avoid build failures if
no other file system already selected this option (from Johannes).
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQSRPv8tYSvhwAzJdzjdoc3SxdoYdgUCXljJWAAKCRDdoc3SxdoY
dmztAP9Sj74cHVTxac+HoDKwf6DYWfjPWonT5tO4wc8q0PBDOgEAhKzHQJZNqJvd
a0BrEf/t6RLWDgsi75cB/U6HsiGkiA0=
=+maQ
-----END PGP SIGNATURE-----
Merge tag 'zonefs-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs
Pull zonefs fixes from Damien Le Moal:
"Two fixes in here:
- Revert the initial decision to silently ignore IOCB_NOWAIT for
asynchronous direct IOs to sequential zone files. Instead, return
an error to the user to signal that the feature is not supported
(from Christoph)
- A fix to zonefs Kconfig to select FS_IOMAP to avoid build failures
if no other file system already selected this option (from
Johannes)"
* tag 'zonefs-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
zonefs: select FS_IOMAP
zonefs: fix IOCB_NOWAIT handling
When destroying a DMA mmapped object, there is no need to artificially
delay the freeing of the pages to the mmap entry removal. Since the vma
keeps a reference count on these pages, free_pages_exact can be called on
the destroy verb as it won't really free the pages until the reference
count is cleared (in case the user hasn't called munmap yet).
Remove the special handling of DMA pages and call free_pages_exact on
destroy_qp/cq. The mmap entry removal is moved to the beginning of the
destroy flows, so the driver can safely free the pages.
Link: https://lore.kernel.org/r/20200225114010.21790-4-galpress@amazon.com
Reviewed-by: Firas JahJah <firasj@amazon.com>
Reviewed-by: Yossi Leybovich <sleybo@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The fact that the LSB in the register is the enable bit should not be an
implicit assumption between the driver and the device, properly document
that in the register definition.
Link: https://lore.kernel.org/r/20200225114010.21790-3-galpress@amazon.com
Reviewed-by: Firas JahJah <firasj@amazon.com>
Reviewed-by: Yossi Leybovich <sleybo@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Use unified macros for device structs access instead of open coding the
shifts and masks over and over again.
Link: https://lore.kernel.org/r/20200225114010.21790-2-galpress@amazon.com
Reviewed-by: Firas JahJah <firasj@amazon.com>
Reviewed-by: Yossi Leybovich <sleybo@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Encapsulate the kernel qp doorbell allocation related code into 2
functions: alloc_qp_db() and free_qp_db().
Link: https://lore.kernel.org/r/1582526258-13825-8-git-send-email-liweihang@huawei.com
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Encapsulate the kernel qp wrid allocation related code into 2 functions:
alloc_kernel_wrid() and free_kernel_wrid().
Link: https://lore.kernel.org/r/1582526258-13825-7-git-send-email-liweihang@huawei.com
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Encapsulate qp buffer allocation related code into 3 functions:
alloc_qp_buf(), map_wqe_buf() and free_qp_buf().
Link: https://lore.kernel.org/r/1582526258-13825-5-git-send-email-liweihang@huawei.com
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Encapsulate the code associated with the qp number assignment into
alloc_qpn() and free_qpn().
Link: https://lore.kernel.org/r/1582526258-13825-4-git-send-email-liweihang@huawei.com
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Rename the qp context related functions and adjusts the code location to
distinguish between the qp context and the entire qp.
Link: https://lore.kernel.org/r/1582526258-13825-3-git-send-email-liweihang@huawei.com
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Wrap the duplicate code in hip08 and hip06 qp destruction process as
hns_roce_qp_destroy() to simply the qp destroy flow.
Link: https://lore.kernel.org/r/1582526258-13825-2-git-send-email-liweihang@huawei.com
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
There are two paths to update qp producer index into hardware now, one
path is doorbell in post verbs (send and recv), the another is mailbox in
modify qp verb which is called by flush process. This will lead the
hardware to be broken to correctly generate flush cqe. With stopping
doorbell update and holding qp spinlock in modify qp during flush process,
the problem can be solved.
Fixes: 0425e3e6e0 ("RDMA/hns: Support flush cqe for hip08 in kernel space")
Link: https://lore.kernel.org/r/1582367158-27030-3-git-send-email-liuyixian@huawei.com
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Set revisions that equal to or higher than HIP08_B as default to maintain
backward compatibility.
Link: https://lore.kernel.org/r/1582363039-10714-1-git-send-email-liweihang@huawei.com
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
- Fix compilation on 32bit
- Move VHE guest entry/exit into the VHE-specific entry code
- Make sure all functions called by the non-VHE HYP code is tagged as __always_inline
-----BEGIN PGP SIGNATURE-----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=NpPo
-----END PGP SIGNATURE-----
Merge tag 'kvmarm-fixes-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm fixes for 5.6, take #1
- Fix compilation on 32bit
- Move VHE guest entry/exit into the VHE-specific entry code
- Make sure all functions called by the non-VHE HYP code is tagged as __always_inline
In older version of systemd(219), at boot time, udevadm is called with :
/usr/bin/udevadm trigger --type=devices --action=add"
This program generates an echo "add" in /sys/devices/system/cpu/cpu<x>/uevent,
leading to the "kvm: disabled by bios" message in case of your Bios disabled
the virtualization extensions.
On a modern system running up to 256 CPU threads, this pollutes the Kernel logs.
This patch offers to ratelimit this message to avoid any userspace program triggering
this uevent printing this message too often.
This patch is only a workaround but greatly reduce the pollution without
breaking the current behavior of printing a message if some try to instantiate
KVM on a system that doesn't support it.
Note that recent versions of systemd (>239) do not have trigger this behavior.
This patch will be useful at least for some using older systemd with recent Kernels.
Signed-off-by: Erwan Velu <e.velu@criteo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* pm-sleep:
PM / hibernate: fix typo "reserverd_size" -> "reserved_size"
Documentation: power: Drop reference to interface.rst
* pm-devfreq:
Revert "PM / devfreq: Modify the device name as devfreq(X) for sysfs"
struct cpufreq_policy is quite big and it is not a good idea
to allocate one on the stack. Just use cpufreq_cpu_get and
cpufreq_cpu_put which is even simpler.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Restrict -Werror to well-tested configurations and allow disabling it
via Kconfig.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
