Shiju Jose [Fri, 19 Oct 2018 19:15:29 +0000 (20:15 +0100)]
net: hns3: Add enable and process common ecc errors
This patch adds enable and processing of ecc errors from
common HNS blocks, CMDQ(Command Queue),
IMP(Integrated Management Processor) and TQP(Task Queue Pair).
Shiju Jose [Fri, 19 Oct 2018 19:15:26 +0000 (20:15 +0100)]
net: hns3: Add PCIe AER callback error_detected
Set of hw errors occurred in the HNS3 are reported to the
hns3 driver through PCIe AER and RAS.The error info will be
processed and appropriately recovered.
This patch adds error_detected callback and error processing.
mISDN: Fix type of switch control variable in ctrl_teimanager
Clang warns (trimmed for brevity):
drivers/isdn/mISDN/tei.c:1193:7: warning: overflow converting case value
to switch condition type (2147764552 to 18446744071562348872) [-Wswitch]
case IMHOLD_L1:
^
drivers/isdn/mISDN/tei.c:1187:7: warning: overflow converting case value
to switch condition type (2147764550 to 18446744071562348870) [-Wswitch]
case IMCLEAR_L2:
^
2 warnings generated.
The root cause is that the _IOC macro can generate really large numbers,
which don't find into type int. My research into how GCC and Clang are
handling this at a low level didn't prove fruitful and surveying the
kernel tree shows that aside from here and a few places in the scsi
subsystem, everything that uses _IOC is at least of type 'unsigned int'.
Make that change here because as nothing in this function cares about
the signedness of the variable and it removes ambiguity, which is never
good when dealing with compilers.
While we're here, remove the unnecessary local variable ret (just return
-EINVAL and 0 directly).
Jon Maloy [Fri, 19 Oct 2018 17:55:40 +0000 (19:55 +0200)]
tipc: eliminate message disordering during binding table update
We have seen the following race scenario:
1) named_distribute() builds a "bulk" message, containing a PUBLISH
item for a certain publication. This is based on the contents of
the binding tables's 'cluster_scope' list.
2) tipc_named_withdraw() removes the same publication from the list,
bulds a WITHDRAW message and distributes it to all cluster nodes.
3) tipc_named_node_up(), which was calling named_distribute(), sends
out the bulk message built under 1)
4) The WITHDRAW message arrives at the just detected node, finds
no corresponding publication, and is dropped.
5) The PUBLISH item arrives at the same node, is added to its binding
table, and remains there forever.
This arrival disordering was earlier taken care of by the backlog queue,
originally added for a different purpose, which was removed in the
commit referred to below, but we now need a different solution.
In this commit, we replace the rcu lock protecting the 'cluster_scope'
list with a regular RW lock which comprises even the sending of the
bulk message. This both guarantees both the list integrity and the
message sending order. We will later add a commit which cleans up
this code further.
Note that this commit needs recently added commit d3092b2efca1 ("tipc:
fix unsafe rcu locking when accessing publication list") to apply
cleanly.
YueHaibing [Fri, 19 Oct 2018 13:03:06 +0000 (13:03 +0000)]
octeontx2-af: Remove set but not used variables 'devnum, is_pf'
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/marvell/octeontx2/af/rvu.c: In function 'rvu_detach_rsrcs':
drivers/net/ethernet/marvell/octeontx2/af/rvu.c:855:6: warning:
variable 'devnum' set but not used [-Wunused-but-set-variable]
drivers/net/ethernet/marvell/octeontx2/af/rvu.c:853:7: warning:
variable 'is_pf' set but not used [-Wunused-but-set-variable]
drivers/net/ethernet/marvell/octeontx2/af/rvu.c: In function 'rvu_mbox_handler_ATTACH_RESOURCES':
drivers/net/ethernet/marvell/octeontx2/af/rvu.c:1054:7: warning:
variable 'is_pf' set but not used [-Wunused-but-set-variable]
drivers/net/ethernet/marvell/octeontx2/af/rvu.c:1053:6: warning:
variable 'devnum' set but not used [-Wunused-but-set-variable]
It never used since introduction in commit 746ea74241fa ("octeontx2-af: Add RVU block LF provisioning support")
YueHaibing [Fri, 19 Oct 2018 12:51:28 +0000 (12:51 +0000)]
octeontx2-af: Remove set but not used variable 'block'
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c: In function 'rvu_npa_init':
drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c:446:20: warning:
variable 'block' set but not used [-Wunused-but-set-variable]
It never used since introduction in
commit 7a37245ef23f ("octeontx2-af: NPA block admin queue init")
This patchset aims to fix an out-of-bounds bug in
the phy-ocelot-serdes driver.
Currently, there is an out-of-bounds read on array ctrl->phys,
once variable i reaches the maximum array size of SERDES_MAX
in the for loop.
Quentin Schulz pointed out that SERDES_MAX is a valid value to
index ctrl->phys. So, I updated SERDES_MAX to be SERDES6G_MAX + 1
in include/dt-bindings/phy/phy-ocelot-serdes.h.
Then I changed the condition in the for loop from
i <= SERDES_MAX to i < SERDES_MAX in order to
complete the fix.
The reason I'm sending this fix as series is because
checkpatch reported an error when I first tried to
integrate the whole solution into a singe patch. So,
changes to dt-bindings should be sent as a separate
patch.
Changes in v3:
- Post the series to netdev, so Dave can take it.
Changes in v2:
- Send the whole series to Kishon Vijay Abraham I, so it
can be taken into the PHY tree.
- Add Quentin's Reviewed-by to commit log in both patches.
====================
dt-bindings: phy: Update SERDES_MAX to be SERDES_MAX + 1
SERDES_MAX is a valid value to index ctrl->phys in
drivers/phy/mscc/phy-ocelot-serdes.c. But, currently,
there is an out-of-bounds bug in the mentioned driver
when reading from ctrl->phys, because the size of
array ctrl->phys is SERDES_MAX.
Partially fix this by updating SERDES_MAX to be SERDES6G_MAX + 1.
Notice that this is the first part of the solution to
the out-of-bounds bug mentioned above. Although this
change is not dependent on any other one.
Guoqing Jiang [Fri, 19 Oct 2018 04:08:22 +0000 (12:08 +0800)]
tipc: use destination length for copy string
Got below warning with gcc 8.2 compiler.
net/tipc/topsrv.c: In function ‘tipc_topsrv_start’:
net/tipc/topsrv.c:660:2: warning: ‘strncpy’ specified bound depends on the length of the source argument [-Wstringop-overflow=]
strncpy(srv->name, name, strlen(name) + 1);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
net/tipc/topsrv.c:660:27: note: length computed here
strncpy(srv->name, name, strlen(name) + 1);
^~~~~~~~~~~~
So change it to correct length and use strscpy.
isdn: hfc_{pci,sx}: Avoid empty body if statements
Clang warns:
drivers/isdn/hisax/hfc_pci.c:131:34: error: if statement has empty body
[-Werror,-Wempty-body]
if (Read_hfc(cs, HFCPCI_INT_S1));
^
drivers/isdn/hisax/hfc_pci.c:131:34: note: put the semicolon on a
separate line to silence this warning
In my attempt to hide the warnings because I thought they didn't serve
any purpose[1], Masahiro Yamada pointed out that {Read,Write}_hfc in
hci_pci.c should be using a standard register access method; otherwise,
the compiler will just remove the if statements.
For hfc_pci, use the versions of {Read,Write}_hfc found in
drivers/isdn/hardware/mISDN/hfc_pCI.h while converting pci_io to be
'void __iomem *' (and clean up ioremap) then remove the empty if
statements.
For hfc_sx, {Read,Write}_hfc are already use a proper register accessor
(inb, outb) so just remove the unnecessary if statements.
David S. Miller [Tue, 23 Oct 2018 02:14:24 +0000 (19:14 -0700)]
Merge branch 'sparc-vdso'
sparc: VDSO improvements
I started out on these changes with the goal of improving perf
annotations when the VDSO is in use. Due to lack of inlining the
helper functions are typically hit when profiling instead of
__vdso_gettimeoday() or __vdso_vclock_gettime().
The only symbols available by default are the dyanmic symbols,
which therefore doesn't cover the helper functions.
So the perf output looks terrible, because the symbols cannot be
resolved and all show up as "Unknown".
The sparc VDSO code forces no inlining because of the way the
simplistic %tick register read code patching works. So fixing that
was the first order of business. Tricks were taken from how x86
implements alternates. The crucial factor is that if you want to
refer to locations (for the original and patch instruction(s)) you
have to do so in a way that is resolvable at link time even for a
shared object. So you have to do this by storing PC-relative
values, and not in executable sections.
Next, we sanitize the Makefile so that the cflags et al. make more
sense. And LDFLAGS are applied actually to invocations of LD instead
of CC.
We also add some sanity checking, specifically in a post-link check
that makes sure we don't have any unexpected unresolved symbols in the
VDSO. This is essential because the dynamic linker cannot resolve
symbols in the VDSO because it cannot write to it.
Finally some very minor optimizations are preformed to the
vclock_gettime.c code. One thing which is tricky with this code on
sparc is that struct timeval and struct timespec are layed out
differently on 64-bit. This is because, unlike other architectures,
sparc defined suseconds_t as 'int' even on 64-bit. This is why we
have all of the "union" tstv_t" business and the weird assignments
in __vdso_gettimeofday().
Performance wise we do gain some cycle shere, specifically here
are cycle counts for a user application calling gettimeofday():
Linus Torvalds [Tue, 23 Oct 2018 00:54:44 +0000 (01:54 +0100)]
Merge tag 'regulator-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"The biggest chunk of the regulator changes for this release outside of
the new drivers is the conversion of the fixed regulator to use the
GPIO descriptor API, there's a small addition to the GPIO API plus a
bunch of updates to board files to implement it. This is some really
welcome work from Linus Walleij that's had a bunch of review and has
been sitting in -next for a while so I'm fairly happy there's no major
issues.
- Helpers for overlapping linear ranges.
- Display opmode and consumer requested load in the regualtor_summary
file in debugfs, plus a fix there.
- Support for the fun and entertaining power off mechanism that the
pfuze100 hardware implements.
- Conversion of the fixed regulator API to use GPIO descriptors,
including pulling in a bunch of patches to a bunch of board files.
- New drivers for Cirrus Logic Lochnagar, Qualcomm PMS405, Rohm BD71847, ST PMIC1, and TI LM363x devices"
* tag 'regulator-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (36 commits)
regulator: lochnagar: Use a consisent comment style for SPDX header
regulator: bd718x7: Remove struct bd718xx_pmic
regulator: Fetch enable gpiods nonexclusive
regulator/gpio: Allow nonexclusive GPIO access
regulator: lochnagar: Add support for the Cirrus Logic Lochnagar
regulator: stpmic1: Return REGULATOR_MODE_INVALID for invalid mode
regulator: stpmic1: add stpmic1 regulator driver
dt-bindings: regulator: document stpmic1 pmic regulators
regulator: axp20x: Mark expected switch fall-throughs
regulator: bd718xx: fix build warning on x86_64
regulator: fixed: Default enable high on DT regulators
regulator: bd718xx: rename bd71837 to 718xx
regulator: bd718XX use pickable ranges
regulator/mfd: bd718xx: rename bd71837/bd71847 common instances
regulator: Support regulators where voltage ranges are selectable
mfd: dt bindings: add BD71847 device-tree binding documentation
regulator: dt bindings: add BD71847 device-tree binding documentation
regulator/mfd: Support ROHM BD71847 power management IC
regulator: da905{2,5}: Remove unnecessary array check
regulator: qcom: Add PMS405 regulators
...
Linus Torvalds [Tue, 23 Oct 2018 00:26:05 +0000 (01:26 +0100)]
Merge tag 'spi-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"One new core feature here, a small collection of new drivers and a
bunch of small improvements in existing drivers:
- A new CS_WORD flag for transfers where the chip select is toggled
at every word, with both a generic implementation and the ability
for controllers to do this automatically (including a DaVinci one).
- New drivers for Mediatek MT2712, Qualcomm GENI and QSPI, Spreadtrum
SPI and ST STM32 QSPI plus new IDs for several existing ones"
* tag 'spi-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (86 commits)
spi: lpspi: add imx8qxp compatible string
spi: Allow building SPI_BCM63XX_HSSPI on ARM-based SoCs
spi: omap2-mcspi: Add slave mode support
spi: omap2-mcspi: Set FIFO DMA trigger level to word length
spi: omap2-mcspi: Switch to readl_poll_timeout()
spi: spi-mem: add stm32 qspi controller
dt-bindings: spi: add stm32 qspi controller
spi: sh-msiof: document R8A779{7|8}0 bindings
spi: pic32-sqi: don't pass GFP_DMA32 to dma_alloc_coherent
MAINTAINERS: Add entry for Broadcom SPI controller
spi: sh-msiof: fix deferred probing
spi: imx: use PIO mode if size is small
spi: imx: correct wml as the last sg length
spi: imx: move wml setting to later than setup_transfer
PCI: Provide pci_match_id() with CONFIG_PCI=n
spi: Make GPIO CSs honour the SPI_NO_CS flag
spi/spi-pxa2xx: add PXA2xx SSP SPI Controller
spi: pxa2xx: Add devicetree support
spi: pxa2xx: Use an enum for type
spi: spi-geni-qcom: Add SPI driver support for GENI based QUP
...
Linus Torvalds [Tue, 23 Oct 2018 00:17:27 +0000 (01:17 +0100)]
Merge tag 'regmap-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"A small update with a couple of new APIs that are useful for some
small sets of devices:
- Split up the single_rw flagging to map read and write separately as
some devices support bulk operations for only read or only write.
- Add a write version of the noinc API.
- Clean up the code for LOG_DEVICE a bit"
* tag 'regmap-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: use less #ifdef for LOG_DEVICE
regmap: Add regmap_noinc_write API
regmap: split up regmap_config.use_single_rw
regmap: fix comment for regmap.use_single_write
Linus Torvalds [Tue, 23 Oct 2018 00:09:22 +0000 (01:09 +0100)]
Merge tag 'mtd/for-4.20' of git://git.infradead.org/linux-mtd
Pull mtd updates from Boris Brezillon:
"SPI NOR core changes:
- Support non-uniform erase size
- Support controllers with limited TX fifo size
Driver changes:
- m25p80: Re-issue a WREN command after each write access
- cadence: Pass a proper dir value to dma_[un]map_single()
- fsl-qspi: Check fsl_qspi_get_seqid() return val make sure 4B
addressing opcodes are properly handled
- intel-spi: Add a new PCI entry for Ice Lake
Raw NAND core changes:
- Two batchs of cleanups of the NAND API, including:
* Deprecating a lot of interfaces (now replaced by ->exec_op()).
* Moving code in separate drivers (JEDEC, ONFI), in private files
(internals), in platform drivers, etc.
* Functions/structures reordering.
* Exclusive use of the nand_chip structure instead of the MTD one
all across the subsystem.
- Addition of the nand_wait_readrdy/rdy_op() helpers.
Raw NAND controllers drivers changes:
- Various coccinelle patches.
- Marvell:
* Use regmap_update_bits() for syscon access.
* More documentation.
* BCH failure path rework.
* More layouts to be supported.
* IRQ handler complete() condition fixed.
- Fsl_ifc:
* SRAM initialization fixed for newer controller versions.
- Denali:
* Fix licenses mismatch and use a SPDX tag.
* Set SPARE_AREA_SKIP_BYTES register to 8 if unset.
- Qualcomm:
* Do not include dma-direct.h.
- Docg4:
* Removed.
- Ams-delta:
* Use of a GPIO lookup table
* Internal machinery changes.
Raw NAND chip drivers changes:
- Toshiba:
* Add support for Toshiba memory BENAND
* Pass a single nand_chip object to the status helper.
- ESMT:
* New driver to retrieve the ECC requirements from the 5th ID
byte.
* tag 'mtd/for-4.20' of git://git.infradead.org/linux-mtd: (93 commits)
jffs2: free jffs2_sb_info through jffs2_kill_sb()
mtd: spi-nor: fsl-quadspi: fix read error for flash size larger than 16MB
mtd: spi-nor: intel-spi: Add support for Intel Ice Lake SPI serial flash
mtd: maps: gpio-addr-flash: Convert to gpiod
mtd: maps: gpio-addr-flash: Replace array with an integer
mtd: maps: gpio-addr-flash: Use order instead of size
mtd: spi-nor: fsl-quadspi: Don't let -EINVAL on the bus
mtd: devices: m25p80: Make sure WRITE_EN is issued before each write
mtd: spi-nor: Support controllers with limited TX FIFO size
mtd: spi-nor: cadence-quadspi: Use proper enum for dma_[un]map_single
mtd: spi-nor: parse SFDP Sector Map Parameter Table
mtd: spi-nor: add support to non-uniform SFDP SPI NOR flash memories
mtd: rawnand: marvell: fix the IRQ handler complete() condition
mtd: rawnand: denali: set SPARE_AREA_SKIP_BYTES register to 8 if unset
mtd: rawnand: r852: fix spelling mistake "card_registred" -> "card_registered"
mtd: rawnand: toshiba: Pass a single nand_chip object to the status helper
mtd: maps: gpio-addr-flash: Use devm_* functions
mtd: maps: gpio-addr-flash: Fix ioremapped size
mtd: maps: gpio-addr-flash: Replace custom printk
mtd: physmap_of: Release resources on error
...
David S. Miller [Mon, 22 Oct 2018 04:44:33 +0000 (21:44 -0700)]
sparc: Improve VDSO instruction patching.
The current VDSO patch mechanism has several problems:
1) It assumes how gcc will emit a function, with a register
window, an initial save instruction and then immediately
the %tick read when compiling vread_tick().
There is no such guarantees, code generation could change
at any time, gcc could put a nop between the save and
the %tick read, etc.
So this is extremely fragile and would fail some day.
2) It disallows us to properly inline vread_tick() into the callers
and thus get the best possible code sequences.
So fix this to patch properly, with location based annotations.
We have to be careful because we cannot do it the way we do
patches elsewhere in the kernel. Those use a sequence like:
This is a dynamic shared object, so that .word cannot be resolved at
build time, and thus cannot be used to execute the patches when the
kernel initializes the images.
Even trying to use label difference equations doesn't work in the
above kind of scheme:
This works, allows us to inline vread_tick() as much as we like, and
can be used for arbitrary kinds of VDSO patching in the future.
Also, reverse the condition for patching. Most systems are %stick
based, so if we only patch on %tick systems the patching code will
get little or no testing.
Linus Torvalds [Mon, 22 Oct 2018 17:16:03 +0000 (18:16 +0100)]
Merge tag 'dma-mapping-4.20' of git://git.infradead.org/users/hch/dma-mapping
Pull dma mapping updates from Christoph Hellwig:
"First batch of dma-mapping changes for 4.20.
There will be a second PR as some big changes were only applied just
before the end of the merge window, and I want to give them a few more
days in linux-next.
Summary:
- mostly more consolidation of the direct mapping code, including
converting over hexagon, and merging the coherent and non-coherent
code into a single dma_map_ops instance (me)
- cleanups for the dma_configure/dma_unconfigure callchains (me)
- better handling of dma_masks in odd setups (me, Alexander Duyck)
- better debugging of passing vmalloc address to the DMA API (Stephen
Boyd)
- CMA command line parsing fix (He Zhe)"
* tag 'dma-mapping-4.20' of git://git.infradead.org/users/hch/dma-mapping: (27 commits)
dma-direct: respect DMA_ATTR_NO_WARN
dma-mapping: translate __GFP_NOFAIL to DMA_ATTR_NO_WARN
dma-direct: document the zone selection logic
dma-debug: Check for drivers mapping invalid addresses in dma_map_single()
dma-direct: fix return value of dma_direct_supported
dma-mapping: move dma_default_get_required_mask under ifdef
dma-direct: always allow dma mask <= physiscal memory size
dma-direct: implement complete bus_dma_mask handling
dma-direct: refine dma_direct_alloc zone selection
dma-direct: add an explicit dma_direct_get_required_mask
dma-mapping: make the get_required_mask method available unconditionally
unicore32: remove swiotlb support
Revert "dma-mapping: clear dev->dma_ops in arch_teardown_dma_ops"
dma-mapping: support non-coherent devices in dma_common_get_sgtable
dma-mapping: consolidate the dma mmap implementations
dma-mapping: merge direct and noncoherent ops
dma-mapping: move the dma_coherent flag to struct device
MIPS: don't select DMA_MAYBE_COHERENT from DMA_PERDEV_COHERENT
dma-mapping: add the missing ARCH_HAS_SYNC_DMA_FOR_CPU_ALL declaration
dma-mapping: fix panic caused by passing empty cma command line argument
...
* tag 'for-4.20/libata-20181021' of git://git.kernel.dk/linux-block:
ata: remove redundant 'default n' from Kconfig
ata: ep93xx: Use proper enums for directions
ata: ahci_brcm: Allow using driver or DSL SoCs
ata: ahci_brcm: Match BCM63138 compatible strings
ata: ahci_brcm: Allow optional reset controller to be used
dt-bindings: ata: Document BCM63138 compatible string
pata_atiixp: Remove unnecessary parentheses
ata: Disable AHCI ALPM feature for Ampere Computing eMAG SATA
dt-bindings: ata: update ahci_sunxi bindings
ata: ahci_sunxi: add support for r40
dt-bindings: ata: ahci-platform: document phy-supply
ata: ahci_platform: add support for PHY controller regulator
dt-bindings: ata: ahci-platform: document ahci-supply
ata: ahci_platform: add support for AHCI controller regulator
dt-bindings: ata: ahci-platform: fix indentation of target-supply
libata: Use SMART LBAM/LBAH password defines
ata: ahci: Convert to using %pOFn instead of device_node.name
Linus Torvalds [Mon, 22 Oct 2018 16:46:08 +0000 (17:46 +0100)]
Merge tag 'for-4.20/block-20181021' of git://git.kernel.dk/linux-block
Pull block layer updates from Jens Axboe:
"This is the main pull request for block changes for 4.20. This
contains:
- Series enabling runtime PM for blk-mq (Bart).
- Two pull requests from Christoph for NVMe, with items such as;
- Better AEN tracking
- Multipath improvements
- RDMA fixes
- Rework of FC for target removal
- Fixes for issues identified by static checkers
- Fabric cleanups, as prep for TCP transport
- Various cleanups and bug fixes
- Block merging cleanups (Christoph)
- Conversion of drivers to generic DMA mapping API (Christoph)
- Series fixing ref count issues with blkcg (Dennis)
- Series improving BFQ heuristics (Paolo, et al)
- Series improving heuristics for the Kyber IO scheduler (Omar)
- Removal of dangerous bio_rewind_iter() API (Ming)
- Apply single queue IPI redirection logic to blk-mq (Ming)
- Set of fixes and improvements for bcache (Coly et al)
- Series closing a hotplug race with sysfs group attributes (Hannes)
- Set of patches for lightnvm:
- pblk trace support (Hans)
- SPDX license header update (Javier)
- Tons of refactoring patches to cleanly abstract the 1.2 and 2.0
specs behind a common core interface. (Javier, Matias)
- Enable pblk to use a common interface to retrieve chunk metadata
(Matias)
- Bug fixes (Various)
- Set of fixes and updates to the blk IO latency target (Josef)
- blk-mq queue number updates fixes (Jianchao)
- Convert a bunch of drivers from the old legacy IO interface to
blk-mq. This will conclude with the removal of the legacy IO
interface itself in 4.21, with the rest of the drivers (me, Omar)
- Removal of the DAC960 driver. The SCSI tree will introduce two
replacement drivers for this (Hannes)"
* tag 'for-4.20/block-20181021' of git://git.kernel.dk/linux-block: (204 commits)
block: setup bounce bio_sets properly
blkcg: reassociate bios when make_request() is called recursively
blkcg: fix edge case for blk_get_rl() under memory pressure
nvme-fabrics: move controller options matching to fabrics
nvme-rdma: always have a valid trsvcid
mtip32xx: fully switch to the generic DMA API
rsxx: switch to the generic DMA API
umem: switch to the generic DMA API
sx8: switch to the generic DMA API
sx8: remove dead IF_64BIT_DMA_IS_POSSIBLE code
skd: switch to the generic DMA API
ubd: remove use of blk_rq_map_sg
nvme-pci: remove duplicate check
drivers/block: Remove DAC960 driver
nvme-pci: fix hot removal during error handling
nvmet-fcloop: suppress a compiler warning
nvme-core: make implicit seed truncation explicit
nvmet-fc: fix kernel-doc headers
nvme-fc: rework the request initialization code
nvme-fc: introduce struct nvme_fcp_op_w_sgl
...
Linus Torvalds [Mon, 22 Oct 2018 16:30:06 +0000 (17:30 +0100)]
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Apart from some new arm64 features and clean-ups, this also contains
the core mmu_gather changes for tracking the levels of the page table
being cleared and a minor update to the generic
compat_sys_sigaltstack() introducing COMPAT_SIGMINSKSZ.
Summary:
- Core mmu_gather changes which allow tracking the levels of
page-table being cleared together with the arm64 low-level flushing
routines
- Support for the new ARMv8.5 PSTATE.SSBS bit which can be used to
mitigate Spectre-v4 dynamically without trapping to EL3 firmware
- Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack
- Optimise emulation of MRS instructions to ID_* registers on ARMv8.4
- Support for Common Not Private (CnP) translations allowing threads
of the same CPU to share the TLB entries
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (78 commits)
arm64: KVM: Guests can skip __install_bp_hardening_cb()s HYP work
arm64: cpufeature: Trap CTR_EL0 access only where it is necessary
arm64: cpufeature: Fix handling of CTR_EL0.IDC field
arm64: cpufeature: ctr: Fix cpu capability check for late CPUs
Documentation/arm64: HugeTLB page implementation
arm64: mm: Use __pa_symbol() for set_swapper_pgd()
arm64: Add silicon-errata.txt entry for ARM erratum 1188873
Revert "arm64: uaccess: implement unsafe accessors"
arm64: mm: Drop the unused cpu parameter
MAINTAINERS: fix bad sdei paths
arm64: mm: Use #ifdef for the __PAGETABLE_P?D_FOLDED defines
arm64: Fix typo in a comment in arch/arm64/mm/kasan_init.c
arm64: xen: Use existing helper to check interrupt status
arm64: Use daifflag_restore after bp_hardening
arm64: daifflags: Use irqflags functions for daifflags
arm64: arch_timer: avoid unused function warning
arm64: Trap WFI executed in userspace
arm64: docs: Document SSBS HWCAP
arm64: docs: Fix typos in ELF hwcaps
arm64/kprobes: remove an extra semicolon in arch_prepare_kprobe
...
s390/pkey: move pckmo subfunction available checks away from module init
The init of the pkey module currently fails if the pckmo instruction
or the subfunctions are not available. However, customers may
restrict their LPAR to switch off exactly these functions and work
with secure key only. So it is a valid case to have the pkey module
active and use it for secure key to protected key transfer only.
This patch moves the pckmo subfunction check from the pkey module init
function into the internal function where the pckmo instruction is
called. So now only on invocation of the pckmo instruction the check
for the required subfunction is done. If not available EOPNOTSUPP is
returned to the caller.
The check for having the pckmo instruction available is still done
during module init. This instruction came in with MSA 3 together with
the basic set of kmc instructions needed to work with protected keys.
Vasily Gorbik [Fri, 19 Oct 2018 10:13:58 +0000 (12:13 +0200)]
s390/kasan: support preemptible kernel build
When the kernel is built with:
CONFIG_PREEMPT=y
CONFIG_PREEMPT_COUNT=y
"stfle" function used by kasan initialization code makes additional
call to preempt_count_add/preempt_count_sub. To avoid removing kasan
instrumentation from sched code where those functions leave split stfle
function and provide __stfle variant without preemption handling to be
used by Kasan.
The contact point for the kernel's Code of Conduct should now be the
Code of Conduct Committee, not the full TAB. Change the email address
in the file to properly reflect this.
Code of Conduct Interpretation: Put in the proper URL for the committee
There was a blank <URL> reference for how to find the Code of Conduct
Committee. Fix that up by pointing it to the correct kernel.org website
page location.
Code of Conduct Interpretation: Add document explaining how the Code of Conduct is to be interpreted
The Contributor Covenant Code of Conduct is a general document meant to
provide a set of rules for almost any open source community. Every
open-source community is unique and the Linux kernel is no exception.
Because of this, this document describes how we in the Linux kernel
community will interpret it. We also do not expect this interpretation
to be static over time, and will adjust it as needed.
This document was created with the input and feedback of the TAB as well
as many current kernel maintainers.
Chris Mason [Thu, 11 Oct 2018 16:09:31 +0000 (09:09 -0700)]
Code of conduct: Fix wording around maintainers enforcing the code of conduct
As it was originally worded, this paragraph requires maintainers to
enforce the code of conduct, or face potential repercussions. It sends
the wrong message, when really we just want maintainers to be part of
the solution and not violate the code of conduct themselves.
Removing it doesn't limit our ability to enforce the code of conduct,
and we can still encourage maintainers to help maintain high standards
for the level of discourse in their subsystem.
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Implement two new kind of BPF maps, that is, queue and stack
map along with new peek, push and pop operations, from Mauricio.
2) Add support for MSG_PEEK flag when redirecting into an ingress
psock sk_msg queue, and add a new helper bpf_msg_push_data() for
insert data into the message, from John.
3) Allow for BPF programs of type BPF_PROG_TYPE_CGROUP_SKB to use
direct packet access for __skb_buff, from Song.
4) Use more lightweight barriers for walking perf ring buffer for
libbpf and perf tool as well. Also, various fixes and improvements
from verifier side, from Daniel.
5) Add per-symbol visibility for DSO in libbpf and hide by default
global symbols such as netlink related functions, from Andrey.
6) Two improvements to nfp's BPF offload to check vNIC capabilities
in case prog is shared with multiple vNICs and to protect against
mis-initializing atomic counters, from Jakub.
7) Fix for bpftool to use 4 context mode for the nfp disassembler,
also from Jakub.
8) Fix a return value comparison in test_libbpf.sh and add several
bpftool improvements in bash completion, documentation of bpf fs
restrictions and batch mode summary print, from Quentin.
9) Fix a file resource leak in BPF selftest's load_kallsyms()
helper, from Peng.
10) Fix an unused variable warning in map_lookup_and_delete_elem(),
from Alexei.
11) Fix bpf_skb_adjust_room() signature in BPF UAPI helper doc,
from Nicolas.
12) Add missing executables to .gitignore in BPF selftests, from Anders.
====================
I got tired of fixing this in Renesas drivers manually, so I took the big
hammer. Remove this cumbersome code pattern which got copy-pasted too much
already:
I have been asked if it couldn't be done for dev_set_drvdata as well. I checked
it and did not find one occasion where it could be simplified like this. Not
much of a surprise because driver_data is usually set in probe() functions
which access struct platform_device in many other ways.
I am open for other comments, suggestions, too, of course.
Christophe Leroy [Sat, 20 Oct 2018 07:26:49 +0000 (09:26 +0200)]
x86/stackprotector: Remove the call to boot_init_stack_canary() from cpu_startup_entry()
The following commit:
d7880812b359 ("idle: Add the stack canary init to cpu_startup_entry()")
... added an x86 specific boot_init_stack_canary() call to the generic
cpu_startup_entry() as a temporary hack, with the intention to remove
the #ifdef CONFIG_X86 later.
More than 5 years later let's finally realize that plan! :-)
While implementing stack protector support for PowerPC, we found
that calling boot_init_stack_canary() is also needed for PowerPC
which uses per task (TLS) stack canary like the X86.
However, calling boot_init_stack_canary() would break architectures
using a global stack canary (ARM, SH, MIPS and XTENSA).
Instead of modifying the #ifdef CONFIG_X86 to an even messier:
#if defined(CONFIG_X86) || defined(CONFIG_PPC)
PowerPC implemented the call to boot_init_stack_canary() in the function
calling cpu_startup_entry().
Let's try the same cleanup on the x86 side as well.
On x86 we have two functions calling cpu_startup_entry():
- start_secondary()
- cpu_bringup_and_idle()
start_secondary() already calls boot_init_stack_canary(), so
it's good, and this patch adds the call to boot_init_stack_canary()
in cpu_bringup_and_idle().
I.e. now x86 catches up to the rest of the world and the ugly init
sequence in init/main.c can be removed from cpu_startup_entry().
As a final benefit we can also remove the <linux/stackprotector.h>
dependency from <linux/sched.h>.
Masami Hiramatsu [Sat, 20 Oct 2018 09:47:53 +0000 (18:47 +0900)]
kprobes/x86: Use preempt_enable() in optimized_callback()
The following commit:
a19b2e3d7839 ("kprobes/x86: Remove IRQ disabling from ftrace-based/optimized kprobes”)
removed local_irq_save/restore() from optimized_callback(), the handler
might be interrupted by the rescheduling interrupt and might be
rescheduled - so we must not use the preempt_enable_no_resched() macro.
Use preempt_enable() instead, to not lose preemption events.
Quentin Monnet [Sat, 20 Oct 2018 22:01:50 +0000 (23:01 +0100)]
tools: bpftool: fix completion for "bpftool map update"
When trying to complete "bpftool map update" commands, the call to
printf would print an error message that would show on the command line
if no map is found to complete the command line.
Fix it by making sure we have map ids to complete the line with, before
we try to print something.
Quentin Monnet [Sat, 20 Oct 2018 22:01:49 +0000 (23:01 +0100)]
tools: bpftool: print nb of cmds to stdout (not stderr) for batch mode
When batch mode is used and all commands succeeds, bpftool prints the
number of commands processed to stderr. There is no particular reason to
use stderr for this, we could as well use stdout. It would avoid getting
unnecessary output on stderr if the standard ouptut is redirected, for
example.
Quentin Monnet [Sat, 20 Oct 2018 22:01:48 +0000 (23:01 +0100)]
tools: bpftool: document restriction on '.' in names to pin in bpffs
Names used to pin eBPF programs and maps under the eBPF virtual file
system cannot contain a dot character, which is reserved for future
extensions of this file system.
Document this in bpftool man pages to avoid users getting confused if
pinning fails because of a dot.
Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Wolfram writes:
"i2c for 4.19
Another driver bugfix and MAINTAINERS addition from I2C."
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: rcar: cleanup DMA for all kinds of failure
MAINTAINERS: Add entry for Broadcom STB I2C controller
Dave Hansen [Fri, 19 Oct 2018 14:08:42 +0000 (07:08 -0700)]
x86/mm: Kill stray kernel fault handling comment
I originally had matching user and kernel comments, but the kernel
one got improved. Some errant conflict resolution kicked the commment
somewhere wrong. Kill it.
1) Fix indexing of multi-pass dumps of ipv6 addresses, from David
Ahern.
2) Revert RCU locking change for bonding netpoll, causes worse
problems than it solves.
3) pskb_trim_rcsum_slow() doesn't handle odd trim offsets, resulting
in erroneous bad hw checksum triggers with CHECKSUM_COMPLETE
devices. From Dimitris Michailidis.
4) a revert to some neighbour code changes that adjust notifications
in a way that confuses some apps."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
Revert "neighbour: force neigh_invalidate when NUD_FAILED update is from admin"
net/ipv6: Fix index counter for unicast addresses in in6_dump_addrs
net: fix pskb_trim_rcsum_slow() with odd trim offset
Revert "bond: take rcu lock in netpoll_send_skb_on_dev"
====================
Last batch of misc patches I had in queue: first one removes some left-over
bits from ULP, second is a fix in the verifier where we wrongly use register
number as type to fetch the string for the dump, third disables xadd on flow
keys and subsequent one removes the flow key type from check_helper_mem_access()
as they cannot be passed into any helper as of today. Next one lets map push,
pop, peek avoid having to go through retpoline, and last one has a couple of
minor fixes and cleanups for the ring buffer walk.
====================
Daniel Borkmann [Sun, 21 Oct 2018 00:09:28 +0000 (02:09 +0200)]
bpf, libbpf: simplify and cleanup perf ring buffer walk
Simplify bpf_perf_event_read_simple() a bit and fix up some minor
things along the way: the return code in the header is not of type
int but enum bpf_perf_event_ret instead. Once callback indicated
to break the loop walking event data, it also needs to be consumed
in data_tail since it has been processed already.
Moreover, bpf_perf_event_print_t callback should avoid void * as
we actually get a pointer to struct perf_event_header and thus
applications can make use of container_of() to have type checks.
The walk also doesn't have to use modulo op since the ring size is
required to be power of two.
Daniel Borkmann [Sun, 21 Oct 2018 00:09:27 +0000 (02:09 +0200)]
bpf, verifier: avoid retpoline for map push/pop/peek operation
Extend prior work from 09772d92cd5a ("bpf: avoid retpoline for
lookup/update/delete calls on maps") to also apply to the recently
added map helpers that perform push/pop/peek operations so that
the indirect call can be avoided.
Daniel Borkmann [Sun, 21 Oct 2018 00:09:25 +0000 (02:09 +0200)]
bpf, verifier: reject xadd on flow key memory
We should not enable xadd operation for flow key memory if not
needed there anyway. There is no such issue as described in the
commit f37a8cb84cce ("bpf: reject stores into ctx via st and xadd")
since there's no context rewriter for flow keys today, but it
also shouldn't become part of the user facing behavior to allow
for it. After patch:
0: (79) r7 = *(u64 *)(r1 +144)
1: (b7) r3 = 4096
2: (db) lock *(u64 *)(r7 +0) += r3
BPF_XADD stores into R7 flow_keys is not allowed
Daniel Borkmann [Sun, 21 Oct 2018 00:09:24 +0000 (02:09 +0200)]
bpf, verifier: fix register type dump in xadd and st
Using reg_type_str[insn->dst_reg] is incorrect since insn->dst_reg
contains the register number but not the actual register type. Add
a small reg_state() helper and use it to get to the type. Also fix
up the test_verifier test cases that have an incorrect errstr.
Fixes: 9d2be44a7f33 ("bpf: Reuse canonical string formatter for ctx errs") Signed-off-by: Daniel Borkmann <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
This patch results in unnecessary netlink notification when one
tries to delete a neigh entry already in NUD_FAILED state. Found
this with a buggy app that tries to delete a NUD_FAILED entry
repeatedly. While the notification issue can be fixed with more
checks, adding more complexity here seems unnecessary. Also,
recent tests with other changes in the neighbour code have
shown that the INCOMPLETE and PROBE checks are good enough for
the original issue.
David Ahern [Fri, 19 Oct 2018 17:00:19 +0000 (10:00 -0700)]
net/ipv6: Fix index counter for unicast addresses in in6_dump_addrs
The loop wants to skip previously dumped addresses, so loops until
current index >= saved index. If the message fills it wants to save
the index for the next address to dump - ie., the one that did not
fit in the current message.
Currently, it is incrementing the index counter before comparing to the
saved index, and then the saved index is off by 1 - it assumes the
current address is going to fit in the message.
Change the index handling to increment only after a succesful dump.
Fixes: 502a2ffd7376a ("ipv6: convert idev_list to list macros") Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Dennis Zhou [Sat, 20 Oct 2018 18:56:12 +0000 (14:56 -0400)]
blkcg: reassociate bios when make_request() is called recursively
When submitting a bio, multiple recursive calls to make_request() may
occur. This causes the initial associate done in blkcg_bio_issue_check()
to be incorrect and reference the prior request_queue. This introduces
a helper to do reassociation when make_request() is recursively called.
Dennis Zhou [Sat, 20 Oct 2018 18:56:11 +0000 (14:56 -0400)]
blkcg: fix edge case for blk_get_rl() under memory pressure
It is possible for blkg creation to fail when in blk_get_rl(). In this
situation, the fallback logic returns the nearest created blkg. There is
however special handling for the request_list for the root blkcg. This
fixes the missing edge case from the earlier series changing
blk_get_rl().
Fixes: e2b0989954ae ("blkcg: cleanup and make blk_get_rl use blkg_lookup_create") Signed-off-by: Dennis Zhou <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
Daniel Borkmann [Sat, 20 Oct 2018 19:37:12 +0000 (21:37 +0200)]
Merge branch 'bpf-msg-push-data'
John Fastabend says:
====================
This series adds a new helper bpf_msg_push_data to be used by
sk_msg programs. The helper can be used to insert extra bytes into
the message that can then be used by the program as metadata tags
among other things.
The first patch adds the helper, second patch the libbpf support,
and last patch updates test_sockmap to run msg_push_data tests.
v2: rebase after queue map and in filter.c convert int -> u32
====================
John Fastabend [Sat, 20 Oct 2018 02:56:51 +0000 (19:56 -0700)]
bpf: test_sockmap add options to use msg_push_data
Add options to run msg_push_data, this patch creates two more flags
in test_sockmap that can be used to specify the offset and length
of bytes to be added. The new options are --txmsg_start_push to
specify where bytes should be inserted and --txmsg_end_push to
specify how many bytes. This is analagous to the options that are
used to pull data, --txmsg_start and --txmsg_end.
In addition to adding the options tests are added to the test
suit to run the tests similar to what was done for msg_pull_data.
John Fastabend [Sat, 20 Oct 2018 02:56:49 +0000 (19:56 -0700)]
bpf: sk_msg program helper bpf_msg_push_data
This allows user to push data into a msg using sk_msg program types.
The format is as follows,
bpf_msg_push_data(msg, offset, len, flags)
this will insert 'len' bytes at offset 'offset'. For example to
prepend 10 bytes at the front of the message the user can,
bpf_msg_push_data(msg, 0, 10, 0);
This will invalidate data bounds so BPF user will have to then recheck
data bounds after calling this. After this the msg size will have been
updated and the user is free to write into the added bytes. We allow
any offset/len as long as it is within the (data, data_end) range.
However, a copy will be required if the ring is full and its possible
for the helper to fail with ENOMEM or EINVAL errors which need to be
handled by the BPF program.
This can be used similar to XDP metadata to pass data between sk_msg
layer and lower layers.
Florian Westphal [Sat, 20 Oct 2018 10:25:27 +0000 (12:25 +0200)]
r8169: add support for Byte Queue Limits
This patch is basically a resubmit of 1e918876853a ("r8169: add support
for Byte Queue Limits") which was reverted later. The problems causing
the revert seem to have been fixed in the meantime.
Only change to the original patch is that the call to
netdev_reset_queue was moved to rtl8169_tx_clear.
The Tested-by refers to a system using the RTL8168evl chip version.
Heiner Kallweit [Thu, 18 Oct 2018 20:19:28 +0000 (22:19 +0200)]
r8169: handle all interrupt events in the hard irq handler
Having a separate "slow event" handler isn't needed because all
interrupt events trigger asynchronous activity. And in case of SYSErr
we have bigger problems than performance anyway.
This patch also allows to get rid of acking interrupt events in the
NAPI poll callback.
Here's one more bluetooth-next pull request for the 4.20 kernel.
- Added new USB ID for QCA_ROME controller
- Added debug trace support from QCA wcn3990 controllers
- Updated L2CAP to conform to latest Errata Service Release
- Fix binding to non-removable BCM43430 devices
Please let me know if there are any issues pulling. Thanks.
====================
The attached patch implements three optimizations:
1) Loops in flush_user_dcache_range_asm, flush_kernel_dcache_range_asm,
purge_kernel_dcache_range_asm, flush_user_icache_range_asm, and
flush_kernel_icache_range_asm are unrolled to reduce branch overhead.
2) The static branch prediction for cmpb instructions in pacache.S have
been reviewed and the operand order adjusted where necessary.
3) For flush routines in cache.c, we purge rather flush when we have no
context. The pdc instruction at level 0 is not required to write back
dirty lines to memory. This provides a performance improvement over the
fdc instruction if the feature is implemented.
Version 2 adds alternative patching.
The patch provides an average improvement of about 2%.
The attached change removes the pte_inserted from pgtable.h. As a
result, we always flush the TLB entry when the associated page table
entry is changed.
This change doesn't impact performance signifcantly and it may catch
some cases where the TLB needs flushing but wasn't.
In hindsight I'd have left out the 3 comment fixes to make the pull
request look less scary at such a late point in the cycle. :-/"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/swiotlb: Enable swiotlb for > 4GiG RAM on 32-bit kernels
x86/fpu: Fix i486 + no387 boot crash by only saving FPU registers on context switch if there is an FPU
x86/fpu: Remove second definition of fpu in __fpu__restore_sig()
x86/entry/64: Further improve paranoid_entry comments
x86/entry/32: Clear the CS high bits
x86/boot: Add -Wno-pointer-sign to KBUILD_CFLAGS
x86/time: Correct the attribute on jiffies' definition
x86/entry: Add some paranoid entry/exit CR3 handling comments
x86/percpu: Fix this_cpu_read()
x86/tsc: Force inlining of cyc2ns bits
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Ingo writes:
"scheduler fixes:
Two fixes: a CFS-throttling bug fix, and an interactivity fix."
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix the min_vruntime update logic in dequeue_entity()
sched/fair: Fix throttle_list starvation with low CFS quota
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Ingo writes:
"perf fixes:
Misc perf tooling fixes."
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Stop fallbacking to kallsyms for vdso symbols lookup
perf tools: Pass build flags to traceevent build
perf report: Don't crash on invalid inline debug information
perf cpu_map: Align cpu map synthesized events properly.
perf tools: Fix tracing_path_mount proper path
perf tools: Fix use of alternatives to find JDIR
perf evsel: Store ids for events with their own cpus perf_event__synthesize_event_update_cpus
perf vendor events intel: Fix wrong filter_band* values for uncore events
Revert "perf tools: Fix PMU term format max value calculation"
tools headers uapi: Sync kvm.h copy
tools arch uapi: Sync the x86 kvm.h copy