Merge tag 'libnvdimm-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
"libnvdimm updates for the latest ACPI and UEFI specification

Merge tag 'libnvdimm-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
"libnvdimm updates for the latest ACPI and UEFI specifications. This
pull request also includes new 'struct dax_operations' enabling to
undo the abuse of copy_user_nocache() for copy operations to pmem.

The dax work originally missed 4.12 to address concerns raised by Al.

Summary:

- Introduce the _flushcache() family of memory copy helpers and use
them for persistent memory write operations on x86. The
_flushcache() semantic indicates that the cache is either bypassed
for the copy operation (movnt) or any lines dirtied by the copy
operation are written back (clwb, clflushopt, or clflush).

- Extend dax_operations with ->copy_from_iter() and ->flush()
operations. These operations and other infrastructure updates allow
all persistent memory specific dax functionality to be pushed into
libnvdimm and the pmem driver directly. It also allows dax-specific
sysfs attributes to be linked to a host device, for example:
/sys/block/pmem0/dax/write_cache

- Add support for the new NVDIMM platform/firmware mechanisms
introduced in ACPI 6.2 and UEFI 2.7. This support includes the v1.2
namespace label format, extensions to the address-range-scrub
command set, new error injection commands, and a new BTT
(block-translation-table) layout. These updates support inter-OS
and pre-OS compatibility.

- Fix a longstanding memory corruption bug in nfit_test.

- Make the pmem and nvdimm-region 'badblocks' sysfs files poll(2)
capable.

- Miscellaneous fixes and small updates across libnvdimm and the nfit
driver.

Acknowledgements that came after the branch was pushed: commit
6aa734a2f38e ("libnvdimm, region, pmem: fix 'badblocks'
sysfs_get_dirent() reference lifetime") was reviewed by Toshi Kani
<toshi.kani@hpe.com>"

* tag 'libnvdimm-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (42 commits)
libnvdimm, namespace: record 'lbasize' for pmem namespaces
acpi/nfit: Issue Start ARS to retrieve existing records
libnvdimm: New ACPI 6.2 DSM functions
acpi, nfit: Show bus_dsm_mask in sysfs
libnvdimm, acpi, nfit: Add bus level dsm mask for pass thru.
acpi, nfit: Enable DSM pass thru for root functions.
libnvdimm: passthru functions clear to send
libnvdimm, btt: convert some info messages to warn/err
libnvdimm, region, pmem: fix 'badblocks' sysfs_get_dirent() reference lifetime
libnvdimm: fix the clear-error check in nsio_rw_bytes
libnvdimm, btt: fix btt_rw_page not returning errors
acpi, nfit: quiet invalid block-aperture-region warnings
libnvdimm, btt: BTT updates for UEFI 2.7 format
acpi, nfit: constify *_attribute_group
libnvdimm, pmem: disable dax flushing when pmem is fronting a volatile region
libnvdimm, pmem, dax: export a cache control attribute
dax: convert to bitmask for flags
dax: remove default copy_from_iter fallback
libnvdimm, nfit: enable support for volatile ranges
libnvdimm, pmem: fix persistence warning
...

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Merge tag 'uuid-for-4.13' of git://git.infradead.org/users/hch/uuid into overlayfs-next

UUID/GUID updates:

- introduce the new uuid_t/guid_t types that are going to replace
the somewhat confusi

Merge tag 'uuid-for-4.13' of git://git.infradead.org/users/hch/uuid into overlayfs-next

UUID/GUID updates:

- introduce the new uuid_t/guid_t types that are going to replace
the somewhat confusing uuid_be/uuid_le types and make the terminology
fit the various specs, as well as the userspace libuuid library.
(me, based on a previous version from Amir)
- consolidated generic uuid/guid helper functions lifted from XFS
and libnvdimm (Amir and me)
- conversions to the new types and helpers (Amir, Andy and me)

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Merge tag 'uuid-for-4.13' of git://git.infradead.org/users/hch/uuid

Pull uuid subsystem from Christoph Hellwig:
"This is the new uuid subsystem, in which Amir, Andy and I have started
consolidati

Merge tag 'uuid-for-4.13' of git://git.infradead.org/users/hch/uuid

Pull uuid subsystem from Christoph Hellwig:
"This is the new uuid subsystem, in which Amir, Andy and I have started
consolidating our uuid/guid helpers and improving the types used for
them. Note that various other subsystems have pulled in this tree, so
I'd like it to go in early.

UUID/GUID summary:

- introduce the new uuid_t/guid_t types that are going to replace the
somewhat confusing uuid_be/uuid_le types and make the terminology
fit the various specs, as well as the userspace libuuid library.
(me, based on a previous version from Amir)

- consolidated generic uuid/guid helper functions lifted from XFS and
libnvdimm (Amir and me)

- conversions to the new types and helpers (Amir, Andy and me)"

* tag 'uuid-for-4.13' of git://git.infradead.org/users/hch/uuid: (34 commits)
ACPI: hns_dsaf_acpi_dsm_guid can be static
mmc: sdhci-pci: make guid intel_dsm_guid static
uuid: Take const on input of uuid_is_null() and guid_is_null()
thermal: int340x_thermal: fix compile after the UUID API switch
thermal: int340x_thermal: Switch to use new generic UUID API
acpi: always include uuid.h
ACPI: Switch to use generic guid_t in acpi_evaluate_dsm()
ACPI / extlog: Switch to use new generic UUID API
ACPI / bus: Switch to use new generic UUID API
ACPI / APEI: Switch to use new generic UUID API
acpi, nfit: Switch to use new generic UUID API
MAINTAINERS: add uuid entry
tmpfs: generate random sb->s_uuid
scsi_debug: switch to uuid_t
nvme: switch to uuid_t
sysctl: switch to use uuid_t
partitions/ldm: switch to use uuid_t
overlayfs: use uuid_t instead of uuid_be
fs: switch ->s_uuid to uuid_t
ima/policy: switch to use uuid_t
...

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Merge branch 'uuid-types'

Merge 'uuid-types' from git://git.infradead.org/users/hch/uuid.git

acpi/nfit: Issue Start ARS to retrieve existing records

ACPI 6.2 defines in section 9.20.7.2 that the OSPM may call a Start
ARS with Flags Bit [1] set upon receiving the 0x81 notification.

Upon r

acpi/nfit: Issue Start ARS to retrieve existing records

ACPI 6.2 defines in section 9.20.7.2 that the OSPM may call a Start
ARS with Flags Bit [1] set upon receiving the 0x81 notification.

Upon receiving the notification, the OSPM may decide to issue
a Start ARS with Flags Bit [1] set to prepare for the retrieval
of existing records and issue the Query ARS Status function to
retrieve the records.

Add support to call a Start ARS from acpi_nfit_uc_error_notify()
with ND_ARS_RETURN_PREV_DATA set when HW_ERROR_SCRUB_ON is not set.

Link: http://www.uefi.org/sites/default/files/resources/ACPI_6_2.pdf
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Linda Knippers <linda.knippers@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Merge back ACPICA material for v4.13.

Merge branch 'aarch64/for-next/ras-apei' into aarch64/for-next/core

Merge in arm64 ACPI RAS support (APEI/GHES) from Tyler Baicar.

Merge branch 'uuid-types'

Merge branch 'uuid-types' from git://git.infradead.org/users/hch/uuid.git
to satisfy dependencies.

Merge branch 'uuid-types' of git://git.infradead.org/users/hch/uuid into aarch64/for-next/ras-apei

Pull in uuid-types branch from Christoph, since this conflicts heavily
with the ACPI/APEI RAS work

Merge branch 'uuid-types' of git://git.infradead.org/users/hch/uuid into aarch64/for-next/ras-apei

Pull in uuid-types branch from Christoph, since this conflicts heavily
with the ACPI/APEI RAS work from Tyler Baicer and was created as an
immutable branch to avoid conflicts with ACPI development.

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Merge remote-tracking branch 'origin/master' into drm-misc-next-fixes

Backmerge 4.12-rc6 into -next-fixes. -next-fixes will contain find patches
for 4.13 merge window

Merge branch 'nvme-4.13' of git://git.infradead.org/nvme into for-4.13/block

Pull NVMe changes for 4.13 from Christoph:

Highlights:

- UUID identifier support from Johannes
- Lots of cleanups fro

Merge branch 'nvme-4.13' of git://git.infradead.org/nvme into for-4.13/block

Pull NVMe changes for 4.13 from Christoph:

Highlights:

- UUID identifier support from Johannes
- Lots of cleanups from Sagi
- Host Memory Buffer support from me

And lots of cleanups and smaller fixes of course.

Note that the UUID identifier changes are based on top of the uuid tree.
I am the maintainer of that tree and will send it to Linus as soon as
4.12 is released as various other trees depend on it as well (and the
diffstat includes those changes unfortunately)

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acpi/nfit: Add support of NVDIMM memory error notification in ACPI 6.2

ACPI 6.2 defines a new ACPI notification value to NVDIMM Root Device
in Table 5-169.

0x81 Unconsumed Uncorrectable Memory Err

acpi/nfit: Add support of NVDIMM memory error notification in ACPI 6.2

ACPI 6.2 defines a new ACPI notification value to NVDIMM Root Device
in Table 5-169.

0x81 Unconsumed Uncorrectable Memory Error Detected
Used to pro-actively notify OSPM of uncorrectable memory errors
detected (for example a memory scrubbing engine that continuously
scans the NVDIMMs memory). This is an optional notification. Only
locations that were mapped in to SPA by the platform will generate
a notification.

Add support of this notification value by initiating an ARS scan. This
will find new error locations and add their badblocks information.

Link: http://www.uefi.org/sites/default/files/resources/ACPI_6_2.pdf
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Linda Knippers <linda.knippers@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Merge branches 'pm-cpufreq', 'pm-cpuidle' and 'pm-devfreq'

* pm-cpufreq:
cpufreq: conservative: Allow down_threshold to take values from 1 to 10
Revert "cpufreq: schedutil: Reduce frequencies sl

Merge branches 'pm-cpufreq', 'pm-cpuidle' and 'pm-devfreq'

* pm-cpufreq:
cpufreq: conservative: Allow down_threshold to take values from 1 to 10
Revert "cpufreq: schedutil: Reduce frequencies slower"

* pm-cpuidle:
cpuidle: dt: Add missing 'of_node_put()'

* pm-devfreq:
PM / devfreq: exynos-ppmu: Staticize event list
PM / devfreq: exynos-ppmu: Handle return value of clk_prepare_enable
PM / devfreq: exynos-nocp: Handle return value of clk_prepare_enable

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Merge tag 'v4.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next

Linux 4.12-rc5

Merge branch 'uuid-types' of bombadil.infradead.org:public_git/uuid into nvme-base

acpi, nfit: Switch to use new generic UUID API

There are new types and helpers that are supposed to be used in new code.

As a preparation to get rid of legacy types and API functions do
the convers

acpi, nfit: Switch to use new generic UUID API

There are new types and helpers that are supposed to be used in new code.

As a preparation to get rid of legacy types and API functions do
the conversion here.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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Merge tag 'v4.12-rc3' into for-linus

Merge with mainline to get acpi_dev_present() needed by patches to
axp20x-pek driver.

Merge tag 'v4.12-rc3' into next

Sync with mainline to bring in changes in platform drovers dropping
calls to sparse_keymap_free() so that we can remove it for good.

Sync to mainline for security submaintainers to work against

Merge remote-tracking branch 'airlied/drm-next' into drm-misc-next

Picking up drm-next @ 4.12-rc1 in order to apply Michal Hocko's vmalloc patch set

Signed-off-by: Sean Paul <seanpaul@chromium.org>

Merge 'v4.12-rc1' into MTD

Bring a few queued patches in sync for -next development.

Merge tag 'v4.12-rc1' into patchwork

Linux 4.12-rc1

* tag 'v4.12-rc1': (13212 commits)
Linux 4.12-rc1
mm, docs: update memory.stat description with workingset* entries
mm: vmscan: scan until

Merge tag 'v4.12-rc1' into patchwork

Linux 4.12-rc1

* tag 'v4.12-rc1': (13212 commits)
Linux 4.12-rc1
mm, docs: update memory.stat description with workingset* entries
mm: vmscan: scan until it finds eligible pages
mm, thp: copying user pages must schedule on collapse
dax: fix PMD data corruption when fault races with write
dax: fix data corruption when fault races with write
ext4: return to starting transaction in ext4_dax_huge_fault()
mm: fix data corruption due to stale mmap reads
dax: prevent invalidation of mapped DAX entries
Tigran has moved
mm, vmalloc: fix vmalloc users tracking properly
mm/khugepaged: add missed tracepoint for collapse_huge_page_swapin
gcov: support GCC 7.1
mm, vmstat: Remove spurious WARN() during zoneinfo print
time: delete current_fs_time()
hwpoison, memcg: forcibly uncharge LRU pages
sound: Disable the build of OSS drivers
drm/i915: Make vblank evade warnings optional
Input: cros_ec_keyb - remove extraneous 'const'
drm/nouveau/therm: remove ineffective workarounds for alarm bugs
...

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Merge tag 'libnvdimm-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
"The bulk of this has been in multiple -next releases. There

Merge tag 'libnvdimm-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
"The bulk of this has been in multiple -next releases. There were a few
late breaking fixes and small features that got added in the last
couple days, but the whole set has received a build success
notification from the kbuild robot.

Change summary:

- Region media error reporting: A libnvdimm region device is the
parent to one or more namespaces. To date, media errors have been
reported via the "badblocks" attribute attached to pmem block
devices for namespaces in "raw" or "memory" mode. Given that
namespaces can be in "device-dax" or "btt-sector" mode this new
interface reports media errors generically, i.e. independent of
namespace modes or state.

This subsequently allows userspace tooling to craft "ACPI 6.1
Section 9.20.7.6 Function Index 4 - Clear Uncorrectable Error"
requests and submit them via the ioctl path for NVDIMM root bus
devices.

- Introduce 'struct dax_device' and 'struct dax_operations': Prompted
by a request from Linus and feedback from Christoph this allows for
dax capable drivers to publish their own custom dax operations.
This fixes the broken assumption that all dax operations are
related to a persistent memory device, and makes it easier for
other architectures and platforms to add customized persistent
memory support.

- 'libnvdimm' core updates: A new "deep_flush" sysfs attribute is
available for storage appliance applications to manually trigger
memory controllers to drain write-pending buffers that would
otherwise be flushed automatically by the platform ADR
(asynchronous-DRAM-refresh) mechanism at a power loss event.
Support for "locked" DIMMs is included to prevent namespaces from
surfacing when the namespace label data area is locked. Finally,
fixes for various reported deadlocks and crashes, also tagged for
-stable.

- ACPI / nfit driver updates: General updates of the nfit driver to
add DSM command overrides, ACPI 6.1 health state flags support, DSM
payload debug available by default, and various fixes.

Acknowledgements that came after the branch was pushed:

- commmit 565851c972b5 "device-dax: fix sysfs attribute deadlock":
Tested-by: Yi Zhang <yizhan@redhat.com>

- commit 23f498448362 "libnvdimm: rework region badblocks clearing"
Tested-by: Toshi Kani <toshi.kani@hpe.com>"

* tag 'libnvdimm-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (52 commits)
libnvdimm, pfn: fix 'npfns' vs section alignment
libnvdimm: handle locked label storage areas
libnvdimm: convert NDD_ flags to use bitops, introduce NDD_LOCKED
brd: fix uninitialized use of brd->dax_dev
block, dax: use correct format string in bdev_dax_supported
device-dax: fix sysfs attribute deadlock
libnvdimm: restore "libnvdimm: band aid btt vs clear poison locking"
libnvdimm: fix nvdimm_bus_lock() vs device_lock() ordering
libnvdimm: rework region badblocks clearing
acpi, nfit: kill ACPI_NFIT_DEBUG
libnvdimm: fix clear length of nvdimm_forget_poison()
libnvdimm, pmem: fix a NULL pointer BUG in nd_pmem_notify
libnvdimm, region: sysfs trigger for nvdimm_flush()
libnvdimm: fix phys_addr for nvdimm_clear_poison
x86, dax, pmem: remove indirection around memcpy_from_pmem()
block: remove block_device_operations ->direct_access()
block, dax: convert bdev_dax_supported() to dax_direct_access()
filesystem-dax: convert to dax_direct_access()
Revert "block: use DAX for partition table reads"
ext2, ext4, xfs: retrieve dax_device for iomap operations
...

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acpi, nfit: fix module unload vs workqueue shutdown race

The workqueue may still be running when the devres callbacks start
firing to deallocate an acpi_nfit_desc instance. Stop and flush the
workqu

acpi, nfit: fix module unload vs workqueue shutdown race

The workqueue may still be running when the devres callbacks start
firing to deallocate an acpi_nfit_desc instance. Stop and flush the
workqueue before letting any other devres de-allocations proceed.

Reported-by: Linda Knippers <linda.knippers@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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acpi, nfit: limit ->flush_probe() to initialization work

The nvdimm probe flushing mechanism gives userspace a sync point where
it knows all asynchronous driver probe sequences have completed.
Howev

acpi, nfit: limit ->flush_probe() to initialization work

The nvdimm probe flushing mechanism gives userspace a sync point where
it knows all asynchronous driver probe sequences have completed.
However, it need not wait for other asynchronous actions, like
on-demand address-range-scrub. Track the init work separately from other
work in the workqueue, and only flush the former.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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