Merge tag 'hyperv-next-signed-20240320' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv updates from Wei Liu:

 - Use Hyper-V entropy to seed guest random number generator (Michael
   Kelley)

 - Convert to platform remove callback returning void for vmbus (Uwe
   Kleine-König)

 - Introduce hv_get_hypervisor_version function (Nuno Das Neves)

 - Rename some HV_REGISTER_* defines for consistency (Nuno Das Neves)

 - Change prefix of generic HV_REGISTER_* MSRs to HV_MSR_* (Nuno Das
   Neves)

 - Cosmetic changes for hv_spinlock.c (Purna Pavan Chandra Aekkaladevi)

 - Use per cpu initial stack for vtl context (Saurabh Sengar)

* tag 'hyperv-next-signed-20240320' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  x86/hyperv: Use Hyper-V entropy to seed guest random number generator
  x86/hyperv: Cosmetic changes for hv_spinlock.c
  hyperv-tlfs: Rename some HV_REGISTER_* defines for consistency
  hv: vmbus: Convert to platform remove callback returning void
  mshyperv: Introduce hv_get_hypervisor_version function
  x86/hyperv: Use per cpu initial stack for vtl context
  hyperv-tlfs: Change prefix of generic HV_REGISTER_* MSRs to HV_MSR_*

Pull btrfs fix from David Sterba:
 "Fix a problem found in 6.7 after adding the temp-fsid feature which
  changed device tracking in memory and broke grub-probe. This is used
  on initrd-less systems. There were several iterations of the fix and
  it took longer than expected"

* tag 'for-6.9-part2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: do not skip re-registration for the mounted device

Pull exfat updates from Namjae Jeon:

 - Improve dirsync performance by syncing on a dentry-set rather than on
   a per-directory entry

* tag 'exfat-for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
  exfat: remove duplicate update parent dir
  exfat: do not sync parent dir if just update timestamp
  exfat: remove unused functions
  exfat: convert exfat_find_empty_entry() to use dentry cache
  exfat: convert exfat_init_ext_entry() to use dentry cache
  exfat: move free cluster out of exfat_init_ext_entry()
  exfat: convert exfat_remove_entries() to use dentry cache
  exfat: convert exfat_add_entry() to use dentry cache
  exfat: add exfat_get_empty_dentry_set() helper
  exfat: add __exfat_get_dentry_set() helper

Pull bitmap updates from Yury Norov:
 "A couple of random cleanups plus a step-down patch from Andy"

* tag 'bitmap-for-6.9' of https://github.com/norov/linux:
  bitmap: Step down as a reviewer
  lib/find: optimize find_*_bit_wrap
  lib/find_bit: Fix the code comments about find_next_bit_wrap

Pull smb server updates from Steve French:

 - add support for durable file handles (an important data integrity
   feature)

 - fixes for potential out of bounds issues

 - fix possible null dereference in close

 - getattr fixes

 - trivial typo fix and minor cleanup

* tag 'v6.9-rc-smb3-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: remove module version
  ksmbd: fix potencial out-of-bounds when buffer offset is invalid
  ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16()
  ksmbd: Fix spelling mistake "connction" -> "connection"
  ksmbd: fix possible null-deref in smb_lazy_parent_lease_break_close
  ksmbd: add support for durable handles v1/v2
  ksmbd: mark SMB2_SESSION_EXPIRED to session when destroying previous session
  ksmbd: retrieve number of blocks using vfs_getattr in set_file_allocation_info
  ksmbd: replace generic_fillattr with vfs_getattr

Pull trace tool updates from Steven Rostedt:
 "Tracing:

   - Update makefiles for latency-collector and RTLA, using tools/build/
     makefiles like perf does, inheriting its benefits. For example,
     having a proper way to handle library dependencies.

   - The timerlat tracer has an interface for any tool to use. rtla
     timerlat tool uses this interface dispatching its own threads as
     workload. But, rtla timerlat could also be used for any other
     process. So, add 'rtla timerlat -U' option, allowing the timerlat
     tool to measure the latency of any task using the timerlat tracer
     interface.

  Verification:

   - Update makefiles for verification/rv, using tools/build/ makefiles
     like perf does, inheriting its benefits. For example, having a
     proper way to handle dependencies"

* tag 'trace-tools-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tools/rtla: Add -U/--user-load option to timerlat
  tools/verification: Use tools/build makefiles on rv
  tools/rtla: Use tools/build makefiles to build rtla
  tools/tracing: Use tools/build makefiles on latency-collector

Pull more documentation updates from Jonathan Corbet:
 "A handful of late-arriving documentation fixes and enhancements"

* tag 'docs-6.9-2' of git://git.lwn.net/linux:
  docs: verify/bisect: remove a level of indenting
  docs: verify/bisect: drop 'v' prefix, EOL aspect, and assorted fixes
  docs: verify/bisect: check taint flag
  docs: verify/bisect: improve install instructions
  docs: handling-regressions.rst: Update regzbot command fixed-by to fix
  docs: *-regressions.rst: Add colon to regzbot commands
  doc: Fix typo in admin-guide/cifs/introduction.rst
  README: Fix spelling

The timerlat tracer provides an interface for any application to wait
for the timerlat's periodic wakeup. Currently, rtla timerlat uses it
to dispatch its user-space workload (-u option).

But as the tracer interface is generic, rtla timerlat can also be used
to monitor any workload that uses it. For example, a user might
place their own workload to wait on the tracer interface, and
monitor the results with rtla timerlat.

Add the -U option to rtla timerlat top and hist. With this option, rtla
timerlat will not dispatch its workload but only setting up the
system, waiting for a user to dispatch its workload.

The sample code in this patch is an example of python application
that loops in the timerlat tracer fd.

To use it, dispatch:

 # rtla timerlat -U

In a terminal, then run the python program on another terminal,
specifying the CPU to run it. For example, setting on CPU 1:

 #./timerlat_load.py 1

Then rtla timerlat will start printing the statistics of the
./timerlat_load.py app.

An interesting point is that the "Ret user Timer Latency" value
is the overall response time of the load. The sample load does
a memory copy to exemplify that.

The stop tracing options on rtla timerlat works in this setup
as well, including auto analysis.

Link: https://lkml.kernel.org/r/36e6bcf18fe15c7601048fd4c65aeb193c502cc8.1707229706.git.bristot@kernel.org

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>

Use tools/build/ makefiles to build rv, inheriting the benefits of
it. For example, having a proper way to handle dependencies.

Link: https://lkml.kernel.org/r/2a38a8f7b8dc65fa790381ec9ab42fb62beb2e25.1710519524.git.bristot@kernel.org

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: John Kacur <jkacur@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>

Use tools/build/ makefiles to build rtla, inheriting the benefits of
it. For example, having a proper way to handle dependencies.

rtla is built using perf infra-structure when building inside the
kernel tree.

At this point, rtla diverges from perf in two points: Documentation
and tarball generation/build.

At the documentation level, rtla is one step ahead, placing the
documentation at Documentation/tools/rtla/, using the same build
tools as kernel documentation. The idea is to move perf
documentation to the same scheme and then share the same makefiles.

rtla has a tarball target that the (old) RHEL8 uses. The tarball was
kept using a simple standalone makefile for compatibility. The
standalone makefile shares most of the code, e.g., flags, with
regular buildings.

The tarball method was set as deprecated. If necessary, we can make
a rtla tarball like perf, which includes the entire tools/build.
But this would also require changes in the user side (the directory
structure changes, and probably the deps to build the package).

Inspired on perf and objtool.

Link: https://lkml.kernel.org/r/57563abf2715d22515c0c54a87cff3849eca5d52.1710519524.git.bristot@kernel.org

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: John Kacur <jkacur@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>

Use tools/build/ makefiles to build latency-collector, inheriting
the benefits of it. For example: Before this patch, a missing
tracefs/traceevents headers will result in fail like this:

  ~/linux/tools/tracing/latency $ make
  cc -Wall -Wextra -g -O2  -o latency-collector latency-collector.c -lpthread
  latency-collector.c:26:10: fatal error: tracefs.h: No such file or directory
     26 | #include <tracefs.h>
        |          ^~~~~~~~~~~
  compilation terminated.
  make: *** [Makefile:14: latency-collector] Error 1

Which is not that helpful. After this change it reports:

  ~/linux/tools/tracing/latency# make

  Auto-detecting system features:
  ...                           libtraceevent: [ OFF ]
  ...                              libtracefs: [ OFF ]

  libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel
  libtracefs is missing. Please install libtracefs-dev/libtracefs-devel
  Makefile.config:29: *** Please, check the errors above..  Stop.

This type of output is common across other tools in tools/ like perf
and objtool.

Link: https://lkml.kernel.org/r/872420b0880b11304e4ba144a0086c6478c5b469.1710519524.git.bristot@kernel.org

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: John Kacur <jkacur@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>

Pull bcachefs fixes from Kent Overstreet:
 "Assorted bugfixes.

  Most are fixes for simple assertion pops; the most significant fix is
  for a deadlock in recovery when we have to rewrite large numbers of
  btree nodes to fix errors. This was incorrectly running out of the
  same workqueue as the core interior btree update path - we now give it
  its own single threaded workqueue.

  This was visible to users as "bch2_btree_update_start(): error:
  BCH_ERR_journal_reclaim_would_deadlock" - and then recovery hanging"

* tag 'bcachefs-2024-03-19' of https://evilpiepirate.org/git/bcachefs:
  bcachefs: Fix lost wakeup on journal shutdown
  bcachefs; Fix deadlock in bch2_btree_update_start()
  bcachefs: ratelimit errors from async_btree_node_rewrite
  bcachefs: Run check_topology() first
  bcachefs: Improve bch2_fatal_error()
  bcachefs: Fix lost transaction restart error
  bcachefs: Don't corrupt journal keys gap buffer when dropping alloc info
  bcachefs: fix for building in userspace
  bcachefs: bch2_snapshot_is_ancestor() now safe to call in early recovery
  bcachefs: Fix nested transaction restart handling in bch2_bucket_gens_init()
  bcachefs: Improve sysfs internal/btree_updates
  bcachefs: Split out btree_node_rewrite_worker
  bcachefs: Fix locking in bch2_alloc_write_key()
  bcachefs: Avoid extent entry type assertions in .invalid()
  bcachefs: Fix spurious -BCH_ERR_transaction_restart_nested
  bcachefs: Fix check_key_has_snapshot() call
  bcachefs: Change "accounting overran journal reservation" to a warning

Pull more ARM SoC updates from Arnd Bergmann:
 "These are changes that for some reason ended up not making it into the
  first four branches but that should still make it into 6.9:

   - A rework of the omap clock support that touches both drivers and
     device tree files

   - The reset controller branch changes that had a dependency on late
     bugfixes. Merging them here avoids a backmerge of 6.8-rc5 into the
     drivers branch

   - The RISC-V/starfive, RISC-V/microchip and ARM/Broadcom devicetree
     changes that got delayed and needed some extra time in linux-next
     for wider testing"

* tag 'soc-late-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (31 commits)
  soc: fsl: dpio: fix kcalloc() argument order
  bus: ts-nbus: Improve error reporting
  bus: ts-nbus: Convert to atomic pwm API
  riscv: dts: starfive: jh7110: Add camera subsystem nodes
  ARM: bcm: stop selecing CONFIG_TICK_ONESHOT
  ARM: dts: omap3: Update clksel clocks to use reg instead of ti,bit-shift
  ARM: dts: am3: Update clksel clocks to use reg instead of ti,bit-shift
  clk: ti: Improve clksel clock bit parsing for reg property
  clk: ti: Handle possible address in the node name
  dt-bindings: pwm: opencores: Add compatible for StarFive JH8100
  dt-bindings: riscv: cpus: reg matches hart ID
  reset: Instantiate reset GPIO controller for shared reset-gpios
  reset: gpio: Add GPIO-based reset controller
  cpufreq: do not open-code of_phandle_args_equal()
  of: Add of_phandle_args_equal() helper
  reset: simple: add support for Sophgo SG2042
  dt-bindings: reset: sophgo: support SG2042
  riscv: dts: microchip: add specific compatible for mpfs pdma
  riscv: dts: microchip: add missing CAN bus clocks
  ARM: brcmstb: Add debug UART entry for 74165
  ...

Pull more s390 updates from Heiko Carstens:

 - Various virtual vs physical address usage fixes

 - Add new bitwise types and helper functions and use them in s390
   specific drivers and code to make it easier to find virtual vs
   physical address usage bugs.

   Right now virtual and physical addresses are identical for s390,
   except for module, vmalloc, and similar areas. This will be changed,
   hopefully with the next merge window, so that e.g. the kernel image
   and modules will be located close to each other, allowing for direct
   branches and also for some other simplifications.

   As a prerequisite this requires to fix all misuses of virtual and
   physical addresses. As it turned out people are so used to the
   concept that virtual and physical addresses are the same, that new
   bugs got added to code which was already fixed. In order to avoid
   that even more code gets merged which adds such bugs add and use new
   bitwise types, so that sparse can be used to find such usage bugs.

   Most likely the new types can go away again after some time

 - Provide a simple ARCH_HAS_DEBUG_VIRTUAL implementation

 - Fix kprobe branch handling: if an out-of-line single stepped relative
   branch instruction has a target address within a certain address area
   in the entry code, the program check handler may incorrectly execute
   cleanup code as if KVM code was executed, leading to crashes

 - Fix reference counting of zcrypt card objects

 - Various other small fixes and cleanups

* tag 's390-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (41 commits)
  s390/entry: compare gmap asce to determine guest/host fault
  s390/entry: remove OUTSIDE macro
  s390/entry: add CIF_SIE flag and remove sie64a() address check
  s390/cio: use while (i--) pattern to clean up
  s390/raw3270: make class3270 constant
  s390/raw3270: improve raw3270_init() readability
  s390/tape: make tape_class constant
  s390/vmlogrdr: make vmlogrdr_class constant
  s390/vmur: make vmur_class constant
  s390/zcrypt: make zcrypt_class constant
  s390/mm: provide simple ARCH_HAS_DEBUG_VIRTUAL support
  s390/vfio_ccw_cp: use new address translation helpers
  s390/iucv: use new address translation helpers
  s390/ctcm: use new address translation helpers
  s390/lcs: use new address translation helpers
  s390/qeth: use new address translation helpers
  s390/zfcp: use new address translation helpers
  s390/tape: fix virtual vs physical address confusion
  s390/3270: use new address translation helpers
  s390/3215: use new address translation helpers
  ...

As __assign_str() no longer uses its "src" parameter, there's a check to
make sure nothing depends on it being different than what was passed to
__string(). It originally just compared the pointer passed to __string()
with the pointer passed into __assign_str() via the "src" parameter. But
there's a couple of outliers that just pass in a quoted string constant,
where comparing the pointers is UB to the compiler, as the compiler is
free to create multiple copies of the same string constant.

Instead, just use strcmp(). It may slow down the trace event, but this
will eventually be removed.

Also, fix the issue of passing NULL to strcmp() by adding a WARN_ON() to
make sure that both "src" and the pointer saved in __string() are either
both NULL or have content, and then checking if "src" is not NULL before
performing the strcmp().

Link: https://lore.kernel.org/all/CAHk-=wjxX16kWd=uxG5wzqt=aXoYDf1BgWOKk+qVmAO0zh7sjA@mail.gmail.com/

Fixes: b1afefa6 ("tracing: Use strcmp() in __assign_str() WARN_ON() check")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull more power management updates from Rafael Wysocki:
 "These update the Energy Model to make it prevent errors due to power
  unit mismatches, fix a typo in power management documentation, convert
  one driver to using a platform remove callback returning void, address
  two cpufreq issues (one in the core and one in the DT driver), and
  enable boost support in the SCMI cpufreq driver.

  Specifics:

   - Modify the Energy Model code to bail out and complain if the unit
     of power is not uW to prevent errors due to unit mismatches (Lukasz
     Luba)

   - Make the intel_rapl platform driver use a remove callback returning
     void (Uwe Kleine-König)

   - Fix typo in the suspend and interrupts document (Saravana Kannan)

   - Make per-policy boost flags actually take effect on platforms using
     cpufreq_boost_set_sw() (Sibi Sankar)

   - Enable boost support in the SCMI cpufreq driver (Sibi Sankar)

   - Make the DT cpufreq driver use zalloc_cpumask_var() for allocating
     cpumasks to avoid using unitinialized memory (Marek Szyprowski)"

* tag 'pm-6.9-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: scmi: Enable boost support
  firmware: arm_scmi: Add support for marking certain frequencies as turbo
  cpufreq: dt: always allocate zeroed cpumask
  cpufreq: Fix per-policy boost behavior on SoCs using cpufreq_boost_set_sw()
  Documentation: power: Fix typo in suspend and interrupts doc
  PM: EM: Force device drivers to provide power in uW
  powercap: intel_rapl: Convert to platform remove callback returning void

Pull more ACPI updates from Rafael Wysocki:
 "These update ACPI documentation and kerneldoc comments.

  Specifics:

   - Add markup to generate links from footnotes in the ACPI enumeration
     document (Chris Packham)

   - Update the handle_eject_request() kerneldoc comment to document the
     arguments of the function and improve kerneldoc comments for ACPI
     suspend and hibernation functions (Yang Li)"

* tag 'acpi-6.9-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: PM: Improve kerneldoc comments for suspend and hibernation functions
  ACPI: docs: enumeration: Make footnotes links
  ACPI: Document handle_eject_request() arguments

Pull more thermal control updates from Rafael Wysocki:
 "These update thermal drivers for ARM platforms by adding new hardware
  support (r8a779h0, H616 THS), addressing issues (Mediatek LVTS,
  Mediatek MT7896, thermal-of) and cleaning up code.

  Specifics:

   - Fix memory leak in the error path at probe time in the Mediatek
     LVTS driver (Christophe Jaillet)

   - Fix control buffer enablement regression on Meditek MT7896 (Frank
     Wunderlich)

   - Drop spaces before TABs in different places: thermal-of, ST drivers
     and Makefile (Geert Uytterhoeven)

   - Adjust DT binding for NXP as fsl,tmu-range min/maxItems can vary
     among several SoC versions (Fabio Estevam)

   - Add support for the H616 THS controller on Sun8i platforms (Martin
     Botka)

   - Don't fail probe due to zone registration failure because there is
     no trip points defined in the DT (Mark Brown)

   - Support variable TMU array size for new platforms (Peng Fan)

   - Adjust the DT binding for thermal-of and make the polling time not
     required and assume it is zero when not found in the DT (Konrad
     Dybcio)

   - Add r8a779h0 support in both the DT and the rcar_gen3 driver (Geert
     Uytterhoeven)"

* tag 'thermal-6.9-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal/drivers/rcar_gen3: Add support for R-Car V4M
  dt-bindings: thermal: rcar-gen3-thermal: Add r8a779h0 support
  thermal/of: Assume polling-delay(-passive) 0 when absent
  dt-bindings: thermal-zones: Don't require polling-delay(-passive)
  thermal/drivers/qoriq: Fix getting tmu range
  thermal/drivers/sun8i: Don't fail probe due to zone registration failure
  thermal/drivers/sun8i: Add support for H616 THS controller
  thermal/drivers/sun8i: Add SRAM register access code
  thermal/drivers/sun8i: Extend H6 calibration to support 4 sensors
  thermal/drivers/sun8i: Explain unknown H6 register value
  dt-bindings: thermal: sun8i: Add H616 THS controller
  soc: sunxi: sram: export register 0 for THS on H616
  dt-bindings: thermal: qoriq-thermal: Adjust fsl,tmu-range min/maxItems
  thermal: Drop spaces before TABs
  thermal/drivers/mediatek: Fix control buffer enablement on MT7896
  thermal/drivers/mediatek/lvts_thermal: Fix a memory leak in an error handling path

Pull ata fix from Niklas Cassel:
 "A single fix for ASMedia HBAs.

  These HBAs do not indicate that they support SATA Port Multipliers
  CAP.SPM (Supports Port Multiplier) is not set.

  Likewise, they do not allow you to probe the devices behind an
  attached PMP, as defined according to the SATA-IO PMP specification.

  Instead, they have decided to implement their own version of PMP,
  and because of this, plugging in a PMP actually works, even if the
  HBA claims that it does not support PMP.

  Revert a recent quirk for these HBAs, as that breaks ASMedia's own
  implementation of PMP.

  Unfortunately, this will once again give some users of these HBAs
  significantly increased boot time. However, a longer boot time for
  some, is the lesser evil compared to some other users not being able
  to detect their drives at all"

* tag 'ata-6.9-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
  ahci: asm1064: asm1166: don't limit reported ports

Pull virtio updates from Michael Tsirkin:

 - Per vq sizes in vdpa

 - Info query for block devices support in vdpa

 - DMA sync callbacks in vduse

 - Fixes, cleanups

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (35 commits)
  virtio_net: rename free_old_xmit_skbs to free_old_xmit
  virtio_net: unify the code for recycling the xmit ptr
  virtio-net: add cond_resched() to the command waiting loop
  virtio-net: convert rx mode setting to use workqueue
  virtio: packed: fix unmap leak for indirect desc table
  vDPA: report virtio-blk flush info to user space
  vDPA: report virtio-block read-only info to user space
  vDPA: report virtio-block write zeroes configuration to user space
  vDPA: report virtio-block discarding configuration to user space
  vDPA: report virtio-block topology info to user space
  vDPA: report virtio-block MQ info to user space
  vDPA: report virtio-block max segments in a request to user space
  vDPA: report virtio-block block-size to user space
  vDPA: report virtio-block max segment size to user space
  vDPA: report virtio-block capacity to user space
  virtio: make virtio_bus const
  vdpa: make vdpa_bus const
  vDPA/ifcvf: implement vdpa_config_ops.get_vq_num_min
  vDPA/ifcvf: get_max_vq_size to return max size
  virtio_vdpa: create vqs with the actual size
  ...

Pull xen updates from Juergen Gross:

 - Xen event channel handling fix for a regression with a rare kernel
   config and some added hardening

 - better support of running Xen dom0 in PVH mode

 - a cleanup for the xen grant-dma-iommu driver

* tag 'for-linus-6.9-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/events: increment refcnt only if event channel is refcounted
  xen/evtchn: avoid WARN() when unbinding an event channel
  x86/xen: attempt to inflate the memory balloon on PVH
  xen/grant-dma-iommu: Convert to platform remove callback returning void

Merge additional updates related to the Energy Model, power capping
and system-wide power management for 6.9-rc1:

 - Modify the Energy Model code to bail out and complain if the unit of
   power is not uW to prevent errors due to unit mismatches (Lukasz
   Luba).

 - Make the intel_rapl platform driver use a remove callback returning
   void (Uwe Kleine-König).

 - Fix typo in the suspend and interrupts document (Saravana Kannan).

* pm-em:
  PM: EM: Force device drivers to provide power in uW

* pm-powercap:
  powercap: intel_rapl: Convert to platform remove callback returning void

* pm-sleep:
  Documentation: power: Fix typo in suspend and interrupts doc

Merge an ACPI documentation update for 6.9-rc1 which adds markup to
generate links from footnotes in the enumeration document.

* acpi-docs:
  ACPI: docs: enumeration: Make footnotes links

For renaming, the directory only needs to be updated once if it
is in the same directory.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

When sync or dir_sync is enabled, there is no need to sync the
parent directory's inode if only for updating its timestamp.

1. If an unexpected power failure occurs, the timestamp of the
   parent directory is not updated to the storage, which has no
   impact on the user.

2. The number of writes will be greatly reduced, which can not
   only improve performance, but also prolong device life.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

exfat_count_ext_entries() is no longer called, remove it.
exfat_update_dir_chksum() is no longer called, remove it and
rename exfat_update_dir_chksum_with_entry_set() to it.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

Before this conversion, each dentry traversed needs to be read
from the storage device or page cache. There are at least 16
dentries in a sector. This will result in frequent page cache
searches.

After this conversion, if all directory entries in a sector are
used, the sector only needs to be read once.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

Before this conversion, in exfat_init_ext_entry(), to init
the dentries in a dentry set, the sync times is equals the
dentry number if 'dirsync' or 'sync' is enabled.
That affects not only performance but also device life.

After this conversion, only needs to be synchronized once if
'dirsync' or 'sync' is enabled.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

exfat_init_ext_entry() is an init function, it's a bit strange
to free cluster in it. And the argument 'inode' will be removed
from exfat_init_ext_entry(). So this commit changes to free the
cluster in exfat_remove_entries().

Code refinement, no functional changes.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

Before this conversion, in exfat_remove_entries(), to mark the
dentries in a dentry set as deleted, the sync times is equals
the dentry numbers if 'dirsync' or 'sync' is enabled.
That affects not only performance but also device life.

After this conversion, only needs to be synchronized once if
'dirsync' or 'sync' is enabled.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

After this conversion, if "dirsync" or "sync" is enabled, the
number of synchronized dentries in exfat_add_entry() will change
from 2 to 1.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

This helper is used to lookup empty dentry set. If there are
no enough empty dentries at the input location, this helper will
return the number of dentries that need to be skipped for the
next lookup.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

Since exfat_get_dentry_set() invokes the validate functions of
exfat_validate_entry(), it only supports getting a directory
entry set of an existing file, doesn't support getting an empty
entry set.

To remove the limitation, add this helper.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

Previously, patches have been added to limit the reported count of SATA
ports for asm1064 and asm1166 SATA controllers, as those controllers do
report more ports than physically having.

While it is allowed to report more ports than physically having in CAP.NP,
it is not allowed to report more ports than physically having in the PI
(Ports Implemented) register, which is what these HBAs do.
(This is a AHCI spec violation.)

Unfortunately, it seems that the PMP implementation in these ASMedia HBAs
is also violating the AHCI and SATA-IO PMP specification.

What these HBAs do is that they do not report that they support PMP
(CAP.SPM (Supports Port Multiplier) is not set).

Instead, they have decided to add extra "virtual" ports in the PI register
that is used if a port multiplier is connected to any of the physical
ports of the HBA.

Enumerating the devices behind the PMP as specified in the AHCI and
SATA-IO specifications, by using PMP READ and PMP WRITE commands to the
physical ports of the HBA is not possible, you have to use the "virtual"
ports.

This is of course bad, because this gives us no way to detect the device
and vendor ID of the PMP actually connected to the HBA, which means that
we can not apply the proper PMP quirks for the PMP that is connected to
the HBA.

Limiting the port map will thus stop these controllers from working with
SATA Port Multipliers.

This patch reverts both patches for asm1064 and asm1166, so old behavior
is restored and SATA PMP will work again, but it will also reintroduce the
(minutes long) extra boot time for the ASMedia controllers that do not
have a PMP connected (either on the PCIe card itself, or an external PMP).

However, a longer boot time for some, is the lesser evil compared to some
other users not being able to detect their drives at all.

Fixes: 0077a504 ("ahci: asm1166: correct count of reported ports")
Fixes: 9815e396 ("ahci: asm1064: correct count of reported ports")
Cc: stable@vger.kernel.org
Reported-by: Matt <cryptearth@googlemail.com>
Signed-off-by: Conrad Kostecki <conikost@gentoo.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
[cassel: rewrote commit message]
Signed-off-by: Niklas Cassel <cassel@kernel.org>

Since free_old_xmit_skbs not only deals with skb, but also xdp frame and
subsequent added xsk, so change the name of this function to
free_old_xmit.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20240229072044.77388-19-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

There are two completely similar and independent implementations. This
is inconvenient for the subsequent addition of new types. So extract a
function from this piece of code and call this function uniformly to
recover old xmit ptr.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20240229072044.77388-18-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Adding cond_resched() to the command waiting loop for a better
co-operation with the scheduler. This allows to give CPU a breath to
run other task(workqueue) instead of busy looping when preemption is
not allowed on a device whose CVQ might be slow.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230720083839.481487-3-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>

This patch convert rx mode setting to be done in a workqueue, this is
a must for allow to sleep when waiting for the cvq command to
response since current code is executed under addr spin lock.

Note that we need to disable and flush the workqueue during freeze,
this means the rx mode setting is lost after resuming. This is not the
bug of this patch as we never try to restore rx mode setting during
resume.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230720083839.481487-2-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>

When use_dma_api and premapped are true, then the do_unmap is false.

Because the do_unmap is false, vring_unmap_extra_packed is not called by
detach_buf_packed.

  if (unlikely(vq->do_unmap)) {
                curr = id;
                for (i = 0; i < state->num; i++) {
                        vring_unmap_extra_packed(vq,
                                                 &vq->packed.desc_extra[curr]);
                        curr = vq->packed.desc_extra[curr].next;
                }
  }

So the indirect desc table is not unmapped. This causes the unmap leak.

So here, we check vq->use_dma_api instead. Synchronously, dma info is
updated based on use_dma_api judgment

This bug does not occur, because no driver use the premapped with
indirect.

Fixes: b319940f ("virtio_ring: skip unmap for premapped")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20240223071833.26095-1-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

This commit reports whether a virtio-blk device
support cache flush command to user space
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20240218185606.13509-11-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>