Dan Williams [Sat, 21 May 2016 19:22:41 +0000 (12:22 -0700)]
libnvdimm, dax: fix deletion
The ndctl unit tests discovered that the dax enabling omitted updates to
nd_detach_and_reset(). This routine clears device the configuration
when the namespace is detached. Without this clearing userspace may
assume that the device is in the process of being configured by another
agent in the system.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Sat, 21 May 2016 18:01:41 +0000 (11:01 -0700)]
libnvdimm, dax: fix alignment validation
Testing the dax-device autodetect support revealed a probe failure with
the following result:
dax0.1: bad offset: 0x8200000 dax disabled
The original pfn-device implementation inferred the alignment from
ilog2(offset), now that the alignment is explicit the is_power_of_2()
needs replacing with a real sanity check against the recorded alignment.
Otherwise the alignment check is useless in the implicit case and only
the minimum size of the offset matters.
This self-consistency check is further validated by the probe path that
will re-check that the offset is large enough to contain all the
metadata required to enable the device.
Cc: <stable@vger.kernel.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Wed, 18 May 2016 21:50:12 +0000 (14:50 -0700)]
libnvdimm, dax: autodetect support
For autodetecting a previously established dax configuration we need the
info block to indicate block-device vs device-dax mode, and we need to
have the default namespace probe hand-off the configuration to the
dax_pmem driver.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Wed, 18 May 2016 03:24:16 +0000 (20:24 -0700)]
libnvdimm: release ida resources
ida instances allocate some internal memory for ->free_bitmap in
addition to the base 'struct ida'. Use ida_destroy() to release that
memory at module_exit().
Reported-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The functionality is superseded by the new "Device DAX" facility.
Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Jan Kara <jack@suse.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Sat, 14 May 2016 19:20:44 +0000 (12:20 -0700)]
/dev/dax, core: file operations and dax-mmap
The "Device DAX" core enables dax mappings of performance / feature
differentiated memory. An open mapping or file handle keeps the backing
struct device live, but new mappings are only possible while the device
is enabled. Faults are handled under rcu_read_lock to synchronize
with the enabled state of the device.
Similar to the filesystem-dax case the backing memory may optionally
have struct page entries. However, unlike fs-dax there is no support
for private mappings, or mappings that are not backed by media (see
use of zero-page in fs-dax).
Mappings are always guaranteed to match the alignment of the dax_region.
If the dax_region is configured to have a 2MB alignment, all mappings
are guaranteed to be backed by a pmd entry. Contrast this determinism
with the fs-dax case where pmd mappings are opportunistic. If userspace
attempts to force a misaligned mapping, the driver will fail the mmap
attempt. See dax_dev_check_vma() for other scenarios that are rejected,
like MAP_PRIVATE mappings.
Cc: Hannes Reinecke <hare@suse.de> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Acked-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Wed, 18 May 2016 16:15:08 +0000 (09:15 -0700)]
/dev/dax, pmem: direct access to persistent memory
Device DAX is the device-centric analogue of Filesystem DAX
(CONFIG_FS_DAX). It allows memory ranges to be allocated and mapped
without need of an intervening file system. Device DAX is strict,
precise and predictable. Specifically this interface:
1/ Guarantees fault granularity with respect to a given page size (pte,
pmd, or pud) set at configuration time.
2/ Enforces deterministic behavior by being strict about what fault
scenarios are supported.
For example, by forcing MADV_DONTFORK semantics and omitting MAP_PRIVATE
support device-dax guarantees that a mapping always behaves/performs the
same once established. It is the "what you see is what you get" access
mechanism to differentiated memory vs filesystem DAX which has
filesystem specific implementation semantics.
Persistent memory is the first target, but the mechanism is also
targeted for exclusive allocations of performance differentiated memory
ranges.
This commit is limited to the base device driver infrastructure to
associate a dax device with pmem range.
Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Wed, 18 May 2016 16:13:13 +0000 (09:13 -0700)]
libnvdimm: stop requiring a driver ->remove() method
The dax_pmem driver was implementing an empty ->remove() method to
satisfy the nvdimm bus driver that unconditionally calls ->remove().
Teach the core bus driver to check if ->remove() is NULL to remove that
requirement.
Reported-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Thu, 31 Mar 2016 22:41:18 +0000 (15:41 -0700)]
libnvdimm, dax: record the specified alignment of a dax-device instance
We want to use the alignment as the allocation and mapping unit.
Previously this information was only useful for establishing the data
offset, but now it is important to remember the granularity for the
later use.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Thu, 31 Mar 2016 16:37:11 +0000 (09:37 -0700)]
libnvdimm, dax: reserve space to store labels for device-dax
We may want to subdivide a device-dax range into multiple devices so
that each can have separate permissions or naming. Reserve 128K of
label space by default so we have the capability of making allocation
decisions persistent. This reservation is not something we can add
later since it would result in the default size of a device-dax range
changing between kernel versions.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Device DAX is the device-centric analogue of Filesystem DAX
(CONFIG_FS_DAX). It allows persistent memory ranges to be allocated and
mapped without need of an intervening file system. This initial
infrastructure arranges for a libnvdimm pfn-device to be represented as
a different device-type so that it can be attached to a driver other
than the pmem driver.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
I had relied on the kbuild robot for cross build coverage, however it
only builds alpha_defconfig. Switch from HPAGE_SIZE to PMD_SIZE, which
is more widely defined.
Dan Williams [Fri, 29 Apr 2016 01:01:20 +0000 (18:01 -0700)]
nfit: disable vendor specific commands
Module option to limit userspace to the publicly defined command set.
For cases where private DIMM commands may be interfering with the
kernel's handling of DIMM state this option can be set to block vendor
specific commands.
Cc: Jerry Hoemann <jerry.hoemann@hpe.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Mon, 2 May 2016 16:11:53 +0000 (09:11 -0700)]
nfit: fix translation of command status results
When transportation of the command completes successfully, it indicates
that the 'status' result is valid. Fix the missed checking and
translation of the status field at the end of acpi_nfit_ctl().
Otherwise, we fail to handle reported errors and assume commands
complete successfully.
Reported-by: Linda Knippers <linda.knippers@hpe.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Sat, 30 Apr 2016 20:07:06 +0000 (13:07 -0700)]
libnvdimm, pfn: fix memmap reservation sizing
When configuring a pfn-device instance to allocate the memmap array it
needs to account for the fact that vmemmap_populate_hugepages()
allocates struct page blocks in HPAGE_SIZE chunks. We need to align the
reserved area size to 2MB otherwise arch_add_memory() runs out of memory
while establishing the memmap:
Dan Williams [Fri, 29 Apr 2016 17:33:23 +0000 (10:33 -0700)]
nfit: export subsystem ids as attributes
Similar to pci-sysfs export the subsystem information available in the
NFIT. ACPI 6.1 clarifies that this data is copied as an array of bytes
from the DIMM SPD data.
Reported-by: Ryon Jensen <ryon.jensen@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
There are currently 4 known similar but incompatible definitions of the
command sets that can be sent to an NVDIMM through ACPI. It is also
clear that future platform generations (ACPI or not) will continue to
revise and extend the DIMM command set as new devices and use cases
arrive.
It is obviously untenable to continue to proliferate divergence
of these command definitions, and to that end a standardization process
has begun to provide for a unified specification. However, that leaves a
problem about what to do with this first generation where vendors are
already shipping divergence.
The Linux kernel can support these initial diverged platforms without
giving platform-firmware free reign to continue to diverge and compound
kernel maintenance overhead. The kernel implementation can encourage
standardization in two ways:
1/ Require that any function code that userspace wants to send be
explicitly white-listed in the implementation. For ACPI this means
function codes marked as supported by acpi_check_dsm() may
only be invoked if they appear in the white-list. A function must be
publicly documented before it is added to the white-list.
2/ The above restrictions can be trivially bypassed by using the
"vendor-specific" payload command. However, since vendor-specific
commands are by definition not publicly documented and have the
potential to corrupt the kernel's view of the dimm state, we provide a
toggle to disable vendor-specific operations. Enabling undefined
behavior is a policy decision that can be made by the platform owner
and encourages firmware implementations to choose public over
private command implementations.
Based on an initial patch from Jerry Hoemann Cc: Jerry Hoemann <jerry.hoemann@hpe.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Thu, 28 Apr 2016 23:17:07 +0000 (16:17 -0700)]
nfit, libnvdimm: clarify "commands" vs "_DSMs"
Clarify the distinction between "commands", the ioctls userspace calls
to request the kernel take some action on a given dimm device, and
"_DSMs", the actual function numbers used in the firmware interface to
the DIMM. _DSMs are ACPI specific whereas commands are Linux kernel
generic.
This is in preparation for breaking the 1:1 implicit relationship
between the kernel ioctl number space and the firmware specific function
numbers.
Cc: Jerry Hoemann <jerry.hoemann@hpe.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
ACPI 6.1, section 5.2.25.9, defines an identifier for an NVDIMM.
Change the NFIT driver to add a new sysfs file "id" under nfit
directory.
Signed-off-by: Toshi Kani <toshi.kani@hpe.com> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Robert Moore <robert.moore@intel.com> Cc: Robert Elliott <elliott@hpe.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
acpi/nfit: Update nfit driver to comply with ACPI 6.1
ACPI 6.1, Table 5-133, updates NVDIMM Control Region Structure
as follows.
- Valid Fields, Manufacturing Location, and Manufacturing Date
are added from reserved range. No change in the structure size.
- IDs (SPD values) are stored as arrays of bytes (i.e. big-endian
format). The spec clarifies that they need to be represented
as arrays of bytes as well.
This patch makes the following changes to support this update.
- Change the NFIT driver to show SPD ID values in big-endian
format.
- Change sprintf format to use "0x" instead of "#" since "%#02x"
does not prepend '0'.
link: http://www.uefi.org/sites/default/files/resources/ACPI_6_1.pdf Signed-off-by: Toshi Kani <toshi.kani@hpe.com> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Robert Moore <robert.moore@intel.com> Cc: Robert Elliott <elliott@hpe.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
Pull thermal fixes from Eduardo Valentin:
"Specifics in this pull request:
- Fixes in mediatek and OF thermal drivers
- Fixes in power_allocator governor
- More fixes of unsigned to int type change in thermal_core.c.
These change have been CI tested using KernelCI bot. \o/"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
thermal: fix Mediatek thermal controller build
thermal: consistently use int for trip temp
thermal: fix mtk_thermal build dependency
thermal: minor mtk_thermal.c cleanups
thermal: power_allocator: req_range multiplication should be a 64 bit type
thermal: of: add __init attribute
Merge tag 'asm-generic-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic update from Arnd Bergmann:
"Here is one patch to wire up the preadv/pwritev system calls in the
generic system call table, which is required for all architectures
that were merged in the last few years, including arm64.
Usually these get merged along with the syscall implementation or one
of the architecture trees, but this time that did not happen.
Andre and Christoph both sent a version of this patch, I picked the
one I got first"
* tag 'asm-generic-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
generic syscalls: wire up preadv2 and pwritev2 syscalls
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes: two EDAC driver fixes, a Xen crash fix, a HyperV log spam
fix and a documentation fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86 EDAC, sb_edac.c: Take account of channel hashing when needed
x86 EDAC, sb_edac.c: Repair damage introduced when "fixing" channel address
x86/mm/xen: Suppress hugetlbfs in PV guests
x86/doc: Correct limits in Documentation/x86/x86_64/mm.txt
x86/hyperv: Avoid reporting bogus NMI status for Gen2 instances
Merge branches 'perf-urgent-for-linus', 'smp-urgent-for-linus' and 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf, cpu hotplug and timer fixes from Ingo Molnar:
"perf:
- A single tooling fix for a user-triggerable segfault.
CPU hotplug:
- Fix a CPU hotplug corner case regression, introduced by the recent
hotplug rework
timers:
- Fix a boot hang in the ARM based Tango SoC clocksource driver"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf intel-pt: Fix segfault tracing transactions
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Fix rollback during error-out in __cpu_disable()
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/tango-xtal: Fix boot hang due to incorrect test
Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
"Misc fixes:
pvqspinlocks:
- an instrumentation fix
futexes:
- preempt-count vs pagefault_disable decouple corner case fix
- futex requeue plist race window fix
- futex UNLOCK_PI transaction fix for a corner case"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
asm-generic/futex: Re-enable preemption in futex_atomic_cmpxchg_inatomic()
futex: Acknowledge a new waiter in counter before plist
futex: Handle unlock_pi race gracefully
locking/pvqspinlock: Fix division by zero in qstat_read()
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Ingo Molnar:
"A core irq affinity masks related fix and a MIPS irqchip driver fix"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/mips-gic: Don't overrun pcpu_masks array
genirq: Dont allow affinity mask to be updated on IPIs
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Ingo Molnar:
"A handful of objtool fixes: two improvements to how warnings are
printed plus a false positive warning fix, and build environment fix"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Fix Makefile to properly see if libelf is supported
objtool: Detect falling through to the next function
objtool: Add workaround for GCC switch jump table bug
Merge tag 'usb-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / PHY driver fixes from Greg KH:
"Here are two small sets of patches, both from subsystem trees, USB
gadget and PHY drivers.
Full details are in the shortlog, and they have all been in linux-next
for a while (before I merged them to the USB tree)"
* tag 'usb-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: gadget: f_fs: Fix use-after-free
usb: dwc3: gadget: Fix suspend/resume during device mode
usb: dwc3: fix memory leak of dwc->regset
usb: dwc3: core: fix PHY handling during suspend
usb: dwc3: omap: fix up error path on probe()
usb: gadget: composite: Clear reserved fields of SSP Dev Cap
phy: rockchip-emmc: adapt binding to specifiy register offset and length
phy: rockchip-emmc: should be a child device of the GRF
phy: rockchip-dp: should be a child device of the GRF
Merge tag 'tty-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull serial fixes from Greg KH:
"Here are 3 serial driver fixes for issues that have been reported.
Two are reverts, fixing problems that were in the big TTY/Serial
driver merge in 4.6-rc1, and the last one is a simple bugfix for a
regression that showed up in 4.6-rc1 as well.
All have been in linux-next with no reported issues"
* tag 'tty-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "serial: 8250: Add hardware dependency to RT288X option"
tty/serial/8250: fix RS485 half-duplex RX
Revert "serial-uartlite: Constify uartlite_be/uartlite_le"
Dan Williams [Tue, 22 Mar 2016 07:29:43 +0000 (00:29 -0700)]
libnvdimm, pmem, pfn: move pfn setup to the core
Now that pmem internals have been disentangled from pfn setup, that code
can move to the core. This is in preparation for adding another user of
the pfn-device capabilities.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Tue, 22 Mar 2016 07:22:16 +0000 (00:22 -0700)]
libnvdimm, pmem, pfn: make pmem_rw_bytes generic and refactor pfn setup
In preparation for providing an alternative (to block device) access
mechanism to persistent memory, convert pmem_rw_bytes() to
nsio_rw_bytes(). This allows ->rw_bytes() functionality without
requiring a 'struct pmem_device' to be instantiated.
In other words, when ->rw_bytes() is in use i/o is driven through
'struct nd_namespace_io', otherwise it is driven through 'struct
pmem_device' and the block layer. This consolidates the disjoint calls
to devm_exit_badblocks() and devm_memunmap() into a common
devm_nsio_disable() and cleans up the init path to use a unified
pmem_attach_disk() implementation.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Tue, 22 Mar 2016 05:28:40 +0000 (22:28 -0700)]
libnvdimm, pmem: clean up resource print / request
The leading '0x' in front of %pa is redundant, also we can just use %pR
to simplify the print statement. The request parameters can be directly
taken from the resource as well.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 18 Mar 2016 03:24:31 +0000 (20:24 -0700)]
libnvdimm, pmem: use devm_add_action to release bdev resources
Register a callback to clean up the request_queue and put the gendisk at
driver disable time.
Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 25 Mar 2016 01:06:07 +0000 (18:06 -0700)]
libnvdimm, blk: quiet i/o error reporting
I/O errors events have the potential to be a high frequency and a log
message for each event can swamp the system. This message is also
redundant with upper layer error reporting.
Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 18 Mar 2016 03:08:28 +0000 (20:08 -0700)]
libnvdimm, blk: use devm_add_action to release bdev resources
Register a callback to clean up the request_queue and put the gendisk at
driver disable time.
Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Merge tag 'pinctrl-v4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Some pin control driver fixes came in. One headed for stable and the
other two are just ordinary merge window fixes.
- Make the i.MX driver select REGMAP as a dependency
- Fix up the Mediatek debounce time unit
- Fix a real hairy ffs vs __ffs issue in the Single pinctrl driver"
* tag 'pinctrl-v4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: single: Fix pcs_parse_bits_in_pinctrl_entry to use __ffs than ffs
pinctrl: mediatek: correct debounce time unit in mtk_gpio_set_debounce
pinctrl: imx: Kconfig: PINCTRL_IMX select REGMAP
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Cache invalidation fix for early CPU boot status update (incorrect
cacheline)
- of_put_node() missing in the spin_table code
- EL1/El2 early init inconsistency when Virtualisation Host Extensions
are present
- RCU warning fix in the arm_pmu.c driver
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Fix EL1/EL2 early init inconsistencies with VHE
drivers/perf: arm-pmu: fix RCU usage on pmu resume from low-power
arm64: spin-table: add missing of_node_put()
arm64: fix invalidation of wrong __early_cpu_boot_status cacheline
Dan Williams [Fri, 18 Mar 2016 01:23:09 +0000 (18:23 -0700)]
libnvdimm, btt, convert nd_btt_probe() to devm
Pass the device performing the probe so we can use a devm allocation for
the btt superblock.
Cc: Vishal Verma <vishal.l.verma@intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 18 Mar 2016 01:16:15 +0000 (18:16 -0700)]
libnvdimm, pfn, convert nd_pfn_probe() to devm
Pass the device performing the probe so we can use a devm allocation for
the pfn superblock.
Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Merge tag 'powerpc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Three powerpc cpu feature fixes from Anton Blanchard:
- scan_features() updated incorrect bits for REAL_LE
- update cpu_user_features2 in scan_features()
- update TM user feature bits in scan_features()"
* tag 'powerpc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Update TM user feature bits in scan_features()
powerpc: Update cpu_user_features2 in scan_features()
powerpc: scan_features() updates incorrect bits for REAL_LE
Merge tag 'iommu-fixes-v4.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"The fixes include:
- Two patches to revert the use of default domains in the ARM SMMU
driver. Enabling this caused regressions which need more thorough
fixing. So the regressions are fixed for now by disabling the use
of default domains.
- A fix for a v4.4 regression in the AMD IOMMU driver which broke
devices behind invisible PCIe-to-PCI bridges with IOMMU enabled"
* tag 'iommu-fixes-v4.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/arm-smmu: Don't allocate resources for bypass domains
iommu/arm-smmu: Fix stream-match conflict with IOMMU_DOMAIN_DMA
iommu/amd: Fix checking of pci dma aliases
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"i915, nouveau and amdgpu/radeon fixes in this:
nouveau:
Two fixes, one for a regression with dithering and one for a bug
hit by the userspace drivers.
i915:
A few fixes, mostly things heading for stable, two important
skylake GT3/4 hangs.
radeon/amdgpu:
Some audio, suspend/resume and some runtime PM fixes, along with
two patches to harden the userptr ABI a bit"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (24 commits)
drm: Loongson-3 doesn't fully support wc memory
drm/nouveau/gr/gf100: select a stream master to fixup tfb offset queries
amdgpu/uvd: add uvd fw version for amdgpu
drm/amdgpu: forbid mapping of userptr bo through radeon device file
drm/radeon: forbid mapping of userptr bo through radeon device file
drm/amdgpu: bump the afmt limit for CZ, ST, Polaris
drm/amdgpu: use defines for CRTCs and AMFT blocks
drm/dp/mst: Validate port in drm_dp_payload_send_msg()
drm/nouveau/kms: fix setting of default values for dithering properties
drm/radeon: print a message if ATPX dGPU power control is missing
Revert "drm/radeon: disable runtime pm on PX laptops without dGPU power control"
drm/amdgpu/acp: fix resume on CZ systems with AZ audio
drm/radeon: add a quirk for a XFX R9 270X
drm/radeon: print pci revision as well as pci ids on driver load
drm/i915: Use fw_domains_put_with_fifo() on HSW
drm/i915: Force ringbuffers to not be at offset 0
drm/i915: Adjust size of PIPE_CONTROL used for gen8 render seqno write
drm/i915/skl: Fix spurious gpu hang with gt3/gt4 revs
drm/i915/skl: Fix rc6 based gpu/system hang
drm/i915/userptr: Hold mmref whilst calling get-user-pages
...
Merge tag 'sound-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Again a relatively calm week without surprise: most of fixes are about
HD-audio, including fixes for Cirrus codec regression and a race over
regmap access. Although both change are slightly unintuitive, the
risk of further breakage is quite low, I hope.
Other than that, all the rest are trivial"
* tag 'sound-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Fix possible race on regmap bypass flip
ALSA: pcxhr: Fix missing mutex unlock
ALSA: hda - add PCI ID for Intel Broxton-T
ALSA: hda - Keep powering up ADCs on Cirrus codecs
ALSA: hda/realtek - Add ALC3234 headset mode for Optiplex 9020m
ALSA - hda: hdmi check NULL pointer in hdmi_set_chmap
ALSA: hda - Don't trust the reported actual power state
Tony Luck [Thu, 14 Apr 2016 17:21:52 +0000 (10:21 -0700)]
x86 EDAC, sb_edac.c: Repair damage introduced when "fixing" channel address
In commit:
4e5c0a844456 ("Fix computation of channel address")
I switched the "sck_way" variable from holding the log2 value read
from the h/w to instead be the actual number. Unfortunately it
is needed in log2 form when used to shift the address.
Tested-by: Patrick Geary <patrickg@supermicro.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Aristeu Rozanski <arozansk@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-edac@vger.kernel.org Cc: stable@vger.kernel.org Fixes: 4e5c0a844456 ("Fix computation of channel address") Signed-off-by: Ingo Molnar <mingo@kernel.org>
Merge tag 'fixes-for-v4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.6-rc5
No more major fixes left. Out of the 6 fixes we have
here, 4 are on dwc3.
The most important is the memory leak fix in
dwc3/debugfs.c. We also have a fix for PHY handling
in suspend/resume and a fix for dwc3-omap's error
handling.
Suspend/resume also had the potential to trigger a
NULL pointer dereference on dwc3; that's also fixed
now.
Our good ol' ffs function gets a use-after-free fix
while the generic composite.c layer has a robustness
fix by making sure reserved fields of a possible SSP
device capability descriptor is cleared to 0.
Jan Beulich [Thu, 21 Apr 2016 06:27:04 +0000 (00:27 -0600)]
x86/mm/xen: Suppress hugetlbfs in PV guests
Huge pages are not normally available to PV guests. Not suppressing
hugetlbfs use results in an endless loop of page faults when user mode
code tries to access a hugetlbfs mapped area (since the hypervisor
denies such PTEs to be created, but error indications can't be
propagated out of xen_set_pte_at(), just like for various of its
siblings), and - once killed in an oops like this:
cpu/hotplug: Fix rollback during error-out in __cpu_disable()
The recent introduction of the hotplug thread which invokes the callbacks on
the plugged cpu, cased the following regression:
If takedown_cpu() fails, then we run into several issues:
1) The rollback of the target cpu states is not invoked. That leaves the smp
threads and the hotplug thread in disabled state.
2) notify_online() is executed due to a missing skip_onerr flag. That causes
that both CPU_DOWN_FAILED and CPU_ONLINE notifications are invoked which
confuses quite some notifiers.
3) The CPU_DOWN_FAILED notification is not invoked on the target CPU. That's
not an issue per se, but it is inconsistent and in consequence blocks the
patches which rely on these states being invoked on the target CPU and not
on the controlling cpu. It also does not preserve the strict call order on
rollback which is problematic for the ongoing state machine conversion as
well.
To fix this we add a rollback flag to the remote callback machinery and invoke
the rollback including the CPU_DOWN_FAILED notification on the remote
cpu. Further mark the notify online state with 'skip_onerr' so we don't get a
double invokation.
This workaround will go away once we moved the unplug invocation to the target
cpu itself.
[ tglx: Massaged changelog and moved the CPU_DOWN_FAILED notifiaction to the
target cpu ]
Fixes: 04155efd4071 ("cpu/hotplug: Create hotplug threads") Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: linux-s390@vger.kernel.org Cc: rt@linutronix.de Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Anna-Maria Gleixner <anna-maria@linutronix.de> Link: http://lkml.kernel.org/r/20160408124015.GA21960@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Daniel Lezcano [Tue, 19 Apr 2016 13:43:02 +0000 (15:43 +0200)]
clocksource/drivers/tango-xtal: Fix boot hang due to incorrect test
Commit a7ba78c1227d introduced a regression by inverting a test check
after calling clocksource_mmio_init(). That results on the system to
hang at boot time.
Fix it by inverting the test again.
Fixes: a7ba78c1227d ("Replace code by clocksource_mmio_init") Reported-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Steven Rostedt [Wed, 20 Apr 2016 15:32:35 +0000 (11:32 -0400)]
objtool: Fix Makefile to properly see if libelf is supported
When doing a make allmodconfig, I hit the following compile error:
In file included from builtin-check.c:32:0:
elf.h:22:18: fatal error: gelf.h: No such file or directory
compilation terminated.
...
Digging into it, it appears that the $(shell ..) command in the Makefile does
not give the proper result when it fails to find -lelf, and continues to
compile objtool.
Instead, use the "try-run" makefile macro to perform the test. This gives a
proper result for both cases.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Bernd Petrovitsch <bernd@petrovitsch.priv.at> Cc: Borislav Petkov <bp@alien8.de> Cc: Chris J Arges <chris.j.arges@canonical.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Pedro Alves <palves@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Fixes: 843ec2e234dcd ("objtool: Add tool to perform compile-time stack metadata validation") Link: http://lkml.kernel.org/r/20160420153234.GA24032@home.goodmis.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Dave Airlie [Fri, 22 Apr 2016 00:39:26 +0000 (10:39 +1000)]
Merge branch 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Misc radeon and amdgpu bug fixes for 4.6.
* 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux:
amdgpu/uvd: add uvd fw version for amdgpu
drm/amdgpu: forbid mapping of userptr bo through radeon device file
drm/radeon: forbid mapping of userptr bo through radeon device file
drm/amdgpu: bump the afmt limit for CZ, ST, Polaris
drm/amdgpu: use defines for CRTCs and AMFT blocks
drm/radeon: print a message if ATPX dGPU power control is missing
Revert "drm/radeon: disable runtime pm on PX laptops without dGPU power control"
drm/amdgpu/acp: fix resume on CZ systems with AZ audio
drm/radeon: add a quirk for a XFX R9 270X
drm/radeon: print pci revision as well as pci ids on driver load
drm/amdgpu: when suspending, if uvd/vce was running. need to cancel delay work.
drm/radeon: fix initial connector audio value
drm/amdgpu: forbid mapping of userptr bo through radeon device file
Allowing userptr bo which are basicly a list of page from some vma
(so either anonymous page or file backed page) would lead to serious
corruption of kernel structures and counters (because we overwrite
the page->mapping field when mapping buffer).
This will already block if the buffer was populated before anyone does
try to mmap it because then TTM_PAGE_FLAG_SG would be set in in the
ttm_tt flags. But that flag is check before ttm_tt_populate in the ttm
vm fault handler.
So to be safe just add a check to verify_access() callback.
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Jérôme Glisse <jglisse@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/radeon: forbid mapping of userptr bo through radeon device file
Allowing userptr bo which are basicly a list of page from some vma
(so either anonymous page or file backed page) would lead to serious
corruption of kernel structures and counters (because we overwrite
the page->mapping field when mapping buffer).
This will already block if the buffer was populated before anyone does
try to mmap it because then TTM_PAGE_FLAG_SG would be set in in the
ttm_tt flags. But that flag is check before ttm_tt_populate in the ttm
vm fault handler.
So to be safe just add a check to verify_access() callback.
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Jérôme Glisse <jglisse@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/dp/mst: Validate port in drm_dp_payload_send_msg()
With the joys of things running concurrently, there's always a chance
that the port we get passed in drm_dp_payload_send_msg() isn't actually
valid anymore. Because of this, we need to make sure we validate the
reference to the port before we use it otherwise we risk running into
various race conditions. For instance, on the Dell MST monitor I have
here for testing, hotplugging it enough times causes us to kernel panic:
[drm:intel_mst_enable_dp] 1
[drm:drm_dp_update_payload_part2] payload 0 1
[drm:intel_get_hpd_pins] hotplug event received, stat 0x00200000, dig 0x10101011, pins 0x00000020
[drm:intel_hpd_irq_handler] digital hpd port B - short
[drm:intel_dp_hpd_pulse] got hpd irq on port B - short
[drm:intel_dp_check_mst_status] got esi 00 10 00
[drm:drm_dp_update_payload_part2] payload 1 1
general protection fault: 0000 [#1] SMP
…
Call Trace:
[<ffffffffa012b632>] drm_dp_update_payload_part2+0xc2/0x130 [drm_kms_helper]
[<ffffffffa032ef08>] intel_mst_enable_dp+0xf8/0x180 [i915]
[<ffffffffa0310dbd>] haswell_crtc_enable+0x3ed/0x8c0 [i915]
[<ffffffffa030c84d>] intel_atomic_commit+0x5ad/0x1590 [i915]
[<ffffffffa01db877>] ? drm_atomic_set_crtc_for_connector+0x57/0xe0 [drm]
[<ffffffffa01dc4e7>] drm_atomic_commit+0x37/0x60 [drm]
[<ffffffffa0130a3a>] drm_atomic_helper_set_config+0x7a/0xb0 [drm_kms_helper]
[<ffffffffa01cc482>] drm_mode_set_config_internal+0x62/0x100 [drm]
[<ffffffffa01d02ad>] drm_mode_setcrtc+0x3cd/0x4e0 [drm]
[<ffffffffa01c18e3>] drm_ioctl+0x143/0x510 [drm]
[<ffffffffa01cfee0>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
[<ffffffff810f79a7>] ? hrtimer_start_range_ns+0x1b7/0x3a0
[<ffffffff81212962>] do_vfs_ioctl+0x92/0x570
[<ffffffff81590852>] ? __sys_recvmsg+0x42/0x80
[<ffffffff81212eb9>] SyS_ioctl+0x79/0x90
[<ffffffff816b4e32>] entry_SYSCALL_64_fastpath+0x1a/0xa4
RIP [<ffffffffa012b026>] drm_dp_payload_send_msg+0x146/0x1f0 [drm_kms_helper]
Which occurs because of the hotplug event shown in the log, which ends
up causing DRM's dp helpers to drop the port we're updating the payload
on and panic.
CC: stable@vger.kernel.org Signed-off-by: Lyude <cpaul@redhat.com> Reviewed-by: David Airlie <airlied@linux.ie> Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Thu, 21 Apr 2016 23:09:11 +0000 (09:09 +1000)]
Merge tag 'drm-intel-fixes-2016-04-21' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Hi Dave, fixes all around, all but one are cc: stable material, the most
important ones are likely the Skylake hang fixes from Mika.
* tag 'drm-intel-fixes-2016-04-21' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Use fw_domains_put_with_fifo() on HSW
drm/i915: Force ringbuffers to not be at offset 0
drm/i915: Adjust size of PIPE_CONTROL used for gen8 render seqno write
drm/i915/skl: Fix spurious gpu hang with gt3/gt4 revs
drm/i915/skl: Fix rc6 based gpu/system hang
drm/i915/userptr: Hold mmref whilst calling get-user-pages
drm/i915: Fixup the free space logic in ring_prepare
drm/i915/skl+: Use plane size for relative data rate calculation
Merge tag 'rtc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC fixes from Alexandre Belloni:
"A few fixes for the RTC subsystem. The documentation fix already
missed 4.5 so I think it is worth taking it now:
A documentation fix for s3c and two fixes for the ds1307"
* tag 'rtc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: ds1307: Use irq when available for wakeup-source device
rtc: ds1307: ds3231 temperature s16 overflow
rtc: s3c: Document in binding that only s3c6410 needs a src clk
Merge tag 'pm+acpi-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Two fixes for issues introduced recently, one for an intel_pstate
driver problem uncovered by the recent switch over from using timers
and the other one for a potential cpufreq core problem related to
system suspend/resume.
Specifics:
- Fix an intel_pstate driver problem causing CPUs to get stuck in the
highest P-state when completely idle uncovered by the recent switch
over from using timers (Rafael Wysocki).
- Avoid attempts to get the current CPU frequency when all devices
(like I2C controllers that may be nedded for that purpose) have
been suspended during system suspend/resume (Rafael Wysocki)"
* tag 'pm+acpi-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: Abort cpufreq_update_current_freq() for cpufreq_suspended set
intel_pstate: Avoid getting stuck in high P-states when idle
rtc: ds1307: Use irq when available for wakeup-source device
With commit e19b94a8459e ("rtc: ds1307: add support for the
DT property 'wakeup-source'") we lost the ability for rtc irq
functionality for devices that are actually hooked on a real IRQ
line and have capability to wakeup as well. This is not an expected
behavior. So, instead of just not requesting IRQ, skip the IRQ
requirement only if interrupts are not defined for the device.
Fixes: e19b94a8459e ("rtc: ds1307: add support for the DT property 'wakeup-source'") Reported-by: Tony Lindgren <tony@atomide.com> Cc: Michael Lange <linuxstuff@milaw.biz> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Simon Horman [Thu, 21 Apr 2016 01:49:15 +0000 (11:49 +1000)]
openvswitch: use flow protocol when recalculating ipv6 checksums
When using masked actions the ipv6_proto field of an action
to set IPv6 fields may be zero rather than the prevailing protocol
which will result in skipping checksum recalculation.
This patch resolves the problem by relying on the protocol
in the flow key rather than that in the set field action.
Fixes: 14d1000a8f49 ("net: openvswitch: Support masked set actions.") Cc: Jarno Rajahalme <jrajahalme@nicira.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Driver: Vmxnet3: set CHECKSUM_UNNECESSARY for IPv6 packets
For IPv6, if the device indicates that the checksum is correct, set
CHECKSUM_UNNECESSARY.
Reported-by: Subbarao Narahari <snarahari@vmware.com> Signed-off-by: Shrikrishna Khare <skhare@vmware.com> Signed-off-by: Jin Heo <heoj@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
atl2 includes NETIF_F_SG in hw_features even though it has no support
for non-linear skbs. This bug was originally harmless since the
driver does not claim to implement checksum offload and that used to
be a requirement for SG.
Now that SG and checksum offload are independent features, if you
explicitly enable SG *and* use one of the rare protocols that can use
SG without checkusm offload, this potentially leaks sensitive
information (before you notice that it just isn't working). Therefore
this obscure bug has been designated CVE-2016-2117.
Reported-by: Justin Yackoski <jyackoski@crypto-nite.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Fixes: 7ce938c3de6b ("net: Kill link between CSUM and SG features.") Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Burton [Thu, 21 Apr 2016 10:31:54 +0000 (11:31 +0100)]
irqchip/mips-gic: Don't overrun pcpu_masks array
Commit 29987217399a ("irqchip/mips-gic: Use gic_vpes instead of
NR_CPUS") & commit 1fc45ae1fe40 ("irqchip/mips-gic: Clear percpu_masks
correctly when mapping") both introduce code which accesses gic_vpes
entries in the pcpu_masks array. However, this array has length NR_CPUS.
If NR_CPUS is less than gic_vpes (ie. the kernel supports use of less
CPUs than are present in the system) then we overrun the array, clobber
some other data & generally die pretty promptly.
Most notably this affects uniprocessor kernels running on any multicore
or multithreaded Malta with a GIC (ie. the vast majority of real Malta
boards).
Fix this by only accessing up to min(gic_vpes, NR_CPUS) entries in the
pcpu_masks array, preventing the array overrun.
Fixes: 29987217399a ("irqchip/mips-gic: Use gic_vpes instead of NR_CPUS") Fixes: 1fc45ae1fe40 ("irqchip/mips-gic: Clear percpu_masks correctly when mapping") Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Link: http://lkml.kernel.org/r/1461234714-9975-1-git-send-email-paul.burton@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
David S. Miller [Thu, 21 Apr 2016 19:02:41 +0000 (15:02 -0400)]
Merge branch 'mlx4-fixes'
Or Gerlitz says:
====================
Mellaox 40G driver fixes for 4.6-rc
With the fix for ARM bug being under the works, these are
few other fixes for mlx4 we have ready to go.
Eran addressed the problematic/wrong reporting of dropped packets, Daniel
fixed some matters related to PPC EEH's and Jenny's patch makes sure
VFs can't change the port's pause settings.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eran Ben Elisha [Wed, 20 Apr 2016 13:01:18 +0000 (16:01 +0300)]
net/mlx4_en: Split SW RX dropped counter per RX ring
Count SW packet drops per RX ring instead of a global counter. This
will allow monitoring the number of rx drops per ring.
In addition, SW rx_dropped counter was overwritten by HW rx_dropped
counter, sum both of them instead to show the accurate value.
Fixes: b85d5dbbd8e8 ('net/mlx4_en: Moderate ethtool callback to [...] ') Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Reported-by: Brenden Blanco <bblanco@plumgrid.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net/mlx4_core: Don't allow to VF change global pause settings
Currently changing global pause settings is done via SET_PORT
command with input modifier GENERAL. This command is allowed
for each VF since MTU setting is done via the same command.
Change the above to the following scheme: before passing the
request to the FW, the PF will check whether it was issued
by a slave. If yes, don't change global pause and warn,
otherwise change to the requested value and store for
further reference.
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Jurgens [Wed, 20 Apr 2016 13:01:16 +0000 (16:01 +0300)]
net/mlx4_core: Avoid repeated calls to pci enable/disable
Maintain the PCI status and provide wrappers for enabling and disabling
the PCI device. Performing the actions more than once without doing
its opposite results in warning logs.
This occurred when EEH hotplugged the device causing a warning for
disabling an already disabled device.
Fixes: f770a67f5e79 ('net/mlx4_core: Handle AER flow properly') Signed-off-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Jurgens [Wed, 20 Apr 2016 13:01:15 +0000 (16:01 +0300)]
net/mlx4_core: Implement pci_resume callback
Move resume related activities to a new pci_resume function instead of
performing them in mlx4_pci_slot_reset. This change is needed to avoid
a hotplug during EEH recovery due to commit 26a14f3f2ba5 ("powerpc/eeh:
More relaxed hotplug criterion").
Fixes: f770a67f5e79 ('net/mlx4_core: Handle AER flow properly') Signed-off-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Mark Brown [Wed, 20 Apr 2016 11:54:05 +0000 (12:54 +0100)]
net: phy: spi_ks8895: Don't leak references to SPI devices
The ks8895 driver is using spi_dev_get() apparently just to take a copy
of the SPI device used to instantiate it but never calls spi_dev_put()
to free it. Since the device is guaranteed to exist between probe() and
remove() there should be no need for the driver to take an extra
reference to it so fix the leak by just using a straight assignment.
Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
When the DaVinci emac driver is removed and re-probed, the actual
pdev->dev.platform_data is populated with an unwanted valid pointer saved by
the previous davinci_emac_of_get_pdata() call, causing a kernel crash when
calling priv->int_disable() in emac_int_disable().
Unable to handle kernel paging request at virtual address c8622a80
...
[<c0426fb4>] (emac_int_disable) from [<c0427700>] (emac_dev_open+0x290/0x5f8)
[<c0427700>] (emac_dev_open) from [<c04c00ec>] (__dev_open+0xb8/0x120)
[<c04c00ec>] (__dev_open) from [<c04c0370>] (__dev_change_flags+0x88/0x14c)
[<c04c0370>] (__dev_change_flags) from [<c04c044c>] (dev_change_flags+0x18/0x48)
[<c04c044c>] (dev_change_flags) from [<c052bafc>] (devinet_ioctl+0x6b4/0x7ac)
[<c052bafc>] (devinet_ioctl) from [<c04a1428>] (sock_ioctl+0x1d8/0x2c0)
[<c04a1428>] (sock_ioctl) from [<c014f054>] (do_vfs_ioctl+0x41c/0x600)
[<c014f054>] (do_vfs_ioctl) from [<c014f2a4>] (SyS_ioctl+0x6c/0x7c)
[<c014f2a4>] (SyS_ioctl) from [<c000ff60>] (ret_fast_syscall+0x0/0x1c)
Fixes: a7d7fd5615c3 ("net: ethernet: davinci_emac: add OF support") Cc: Brian Hutchinson <b.hutchman@gmail.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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