Commit Graph

1072123 Commits

Author SHA1 Message Date
Justin M. Forbes
e56e189855 lib/crypto: add prompts back to crypto libraries
Commit 6048fdcc5f ("lib/crypto: blake2s: include as built-in") took
away a number of prompt texts from other crypto libraries. This makes
values flip from built-in to module when oldconfig runs, and causes
problems when these crypto libs need to be built in for thingslike
BIG_KEYS.

Fixes: 6048fdcc5f ("lib/crypto: blake2s: include as built-in")
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Justin M. Forbes <jforbes@fedoraproject.org>
[Jason: - moved menu into submenu of lib/ instead of root menu
        - fixed chacha sub-dependencies for CONFIG_CRYPTO]
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-01-18 13:03:55 +01:00
Linus Torvalds
99613159ad dmaengine updates for v5.17-rc1
New support:
  - DMA_MEMCPY_SG support is bought back as we have a user in Xilinx driver
  - Support for TI J721S2 SoC in k3-udma driver
  - Support for Ingenic MDMA and BDMA in the JZ4760
  - Support for Renesas r8a779f0 dmac
 
 Updates:
  - We are finally getting rid of slave_id, so this brings in the changes
    across tree for that using tag dmaengine_topic_slave_id_removal_5.17
  - updates for idxd driver
  - at_xdmac driver cleanup
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Merge tag 'dmaengine-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine updates from Vinod Koul:
 "A bunch of new support and few updates to drivers:

  New support:
   - DMA_MEMCPY_SG support is bought back as we have a user in Xilinx
     driver
   - Support for TI J721S2 SoC in k3-udma driver
   - Support for Ingenic MDMA and BDMA in the JZ4760
   - Support for Renesas r8a779f0 dmac

  Updates:
   - We are finally getting rid of slave_id, so this brings in the
     changes across tree for that
   - updates for idxd driver
   - at_xdmac driver cleanup"

* tag 'dmaengine-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (60 commits)
  dt-bindings: dma-controller: Split interrupt fields in example
  dmaengine: pch_dma: Remove usage of the deprecated "pci-dma-compat.h" API
  dmaengine: at_xdmac: Fix race over irq_status
  dmaengine: at_xdmac: Remove a level of indentation in at_xdmac_tasklet()
  dmaengine: at_xdmac: Fix at_xdmac_lld struct definition
  dmaengine: at_xdmac: Fix lld view setting
  dmaengine: at_xdmac: Remove a level of indentation in at_xdmac_advance_work()
  dmaengine: at_xdmac: Fix concurrency over xfers_list
  dmaengine: at_xdmac: Move the free desc to the tail of the desc list
  dmaengine: at_xdmac: Fix race for the tx desc callback
  dmaengine: at_xdmac: Fix concurrency over chan's completed_cookie
  dmaengine: at_xdmac: Print debug message after realeasing the lock
  dmaengine: at_xdmac: Start transfer for cyclic channels in issue_pending
  dmaengine: at_xdmac: Don't start transactions at tx_submit level
  dmaengine: idxd: deprecate token sysfs attributes for read buffers
  dmaengine: idxd: change bandwidth token to read buffers
  dmaengine: idxd: fix wq settings post wq disable
  dmaengine: idxd: change MSIX allocation based on per wq activation
  dmaengine: idxd: fix descriptor flushing locking
  dmaengine: idxd: embed irq_entry in idxd_wq struct
  ...
2022-01-18 14:03:34 +02:00
Marcelo Tosatti
5f02ef741a KVM: VMX: switch blocked_vcpu_on_cpu_lock to raw spinlock
blocked_vcpu_on_cpu_lock is taken from hard interrupt context
(pi_wakeup_handler), therefore it cannot sleep.

Switch it to a raw spinlock.

Fixes:

[41297.066254] BUG: scheduling while atomic: CPU 0/KVM/635218/0x00010001
[41297.066323] Preemption disabled at:
[41297.066324] [<ffffffff902ee47f>] irq_enter_rcu+0xf/0x60
[41297.066339] Call Trace:
[41297.066342]  <IRQ>
[41297.066346]  dump_stack_lvl+0x34/0x44
[41297.066353]  ? irq_enter_rcu+0xf/0x60
[41297.066356]  __schedule_bug.cold+0x7d/0x8b
[41297.066361]  __schedule+0x439/0x5b0
[41297.066365]  ? task_blocks_on_rt_mutex.constprop.0.isra.0+0x1b0/0x440
[41297.066369]  schedule_rtlock+0x1e/0x40
[41297.066371]  rtlock_slowlock_locked+0xf1/0x260
[41297.066374]  rt_spin_lock+0x3b/0x60
[41297.066378]  pi_wakeup_handler+0x31/0x90 [kvm_intel]
[41297.066388]  sysvec_kvm_posted_intr_wakeup_ipi+0x9d/0xd0
[41297.066392]  </IRQ>
[41297.066392]  asm_sysvec_kvm_posted_intr_wakeup_ipi+0x12/0x20
...

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-18 04:44:08 -05:00
Linus Torvalds
fe81ba137e ATA changes for 5.17-rc1
A larger than usual set of changes for this cycle. The bulk of the changes are
 part of a rework of libata messages and debugging features from Hannes. In more
 details, the changes are as follows.
 
 * Small code cleanups in the pata_ali driver (unnecessary variable
   initialization and simplified return statement, from Jason and  Colin.
 * Switch to using struct_group() in the sata_fsl driver, from Kees.
 * Convert many sysfs attribute show functions to use sysfs_emit() instead of
   snprintf(), from me.
 * sata_dwc_460ex driver code cleanups, from Andy.
 * Improve DMA setup and remove superfluous error message in libahci_platform,
   from Andy
 * A small code cleanup in libata to use min() instead of open coding test,
   from Changcheng.
 * Rework of libata messages from Hannes. This is especially focused on
   replacing compile time defined debugging messages (DPRINTK() and VPRINTK())
   with regular dynamic debugging messages (pr_debug()) and traceipoint events.
   Both libata-core and many drivers are updated to have a consistent debugging
   level control for all drivers.
 * Extend compile test support to as many drivers as possible in ATA Kconfig to
   improve compile test coverage, from me.
 * Fixes to avoid compile time warnings (W=1) and sparse warnings in sata_fsl
   and ahci_xgene drivers, from me.
 * Fix the interface of the read_id() port operation method to clarify that the
   data buffer passed as an argument is little endian. This avoids sparse
   warnings in the pata_netcell, pata_it821x, ahci_xgene, ahci_cevaxi and
   ahci_brcm drivers. From me.
 * Small code cleanup in the pata_octeon_cf driver, from Minghao.
 * Improved IRQ configuration code in pata_of_platform, from Lad.
 * Simplified implementation of __ata_scsi_queuecmd(), from Wenchao.
 * Debounce delay flag renaming, from Paul.
 * Add support for AMD A85 FCH (Hudson D4) AHCI adapters, from Paul
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Merge tag 'ata-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ATA updates from Damien Le Moal:
 "A larger than usual set of changes for this cycle. The bulk of the
  changes are part of a rework of libata messages and debugging features
  from Hannes. In more detail, the changes are as follows.

   - Small code cleanups in the pata_ali driver (unnecessary variable
     initialization and simplified return statement, from Jason and
     Colin.

   - Switch to using struct_group() in the sata_fsl driver, from Kees.

   - Convert many sysfs attribute show functions to use sysfs_emit()
     instead of snprintf(), from me.

   - sata_dwc_460ex driver code cleanups, from Andy.

   - Improve DMA setup and remove superfluous error message in
     libahci_platform, from Andy

   - A small code cleanup in libata to use min() instead of open coding
     test, from Changcheng.

   - Rework of libata messages from Hannes. This is especially focused
     on replacing compile time defined debugging messages (DPRINTK() and
     VPRINTK()) with regular dynamic debugging messages (pr_debug()) and
     traceipoint events. Both libata-core and many drivers are updated
     to have a consistent debugging level control for all drivers.

   - Extend compile test support to as many drivers as possible in ATA
     Kconfig to improve compile test coverage, from me.

   - Fixes to avoid compile time warnings (W=1) and sparse warnings in
     sata_fsl and ahci_xgene drivers, from me.

   - Fix the interface of the read_id() port operation method to clarify
     that the data buffer passed as an argument is little endian. This
     avoids sparse warnings in the pata_netcell, pata_it821x,
     ahci_xgene, ahci_cevaxi and ahci_brcm drivers. From me.

   - Small code cleanup in the pata_octeon_cf driver, from Minghao.

   - Improved IRQ configuration code in pata_of_platform, from Lad.

   - Simplified implementation of __ata_scsi_queuecmd(), from Wenchao.

   - Debounce delay flag renaming, from Paul.

   - Add support for AMD A85 FCH (Hudson D4) AHCI adapters, from Paul"

* tag 'ata-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata: (106 commits)
  ata: pata_ali: remove redundant return statement
  ata: ahci: Add support for AMD A85 FCH (Hudson D4)
  ata: libata: Rename link flag ATA_LFLAG_NO_DB_DELAY
  ata: libata-scsi: simplify __ata_scsi_queuecmd()
  ata: pata_of_platform: Use platform_get_irq_optional() to get the interrupt
  ata: pata_samsung_cf: add compile test support
  ata: pata_pxa: add compile test support
  ata: pata_imx: add compile test support
  ata: pata_ftide010: add compile test support
  ata: pata_cs5535: add compile test support
  ata: pata_octeon_cf: remove redundant val variable
  ata: fix read_id() ata port operation interface
  ata: ahci_xgene: use correct type for port mmio address
  ata: sata_fsl: fix cmdhdr_tbl_entry and prde struct definitions
  ata: sata_fsl: fix scsi host initialization
  ata: pata_bk3710: add compile test support
  ata: ahci_seattle: add compile test support
  ata: ahci_xgene: add compile test support
  ata: ahci_tegra: add compile test support
  ata: ahci_sunxi: add compile test support
  ...
2022-01-18 10:14:49 +02:00
Linus Torvalds
3bf6a9e36e virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes
partial support for < MAX_ORDER - 1 granularity for virtio-mem
 driver_override for vdpa
 sysfs ABI documentation for vdpa
 multiqueue config support for mlx5 vdpa
 
 Misc fixes, cleanups.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "virtio,vdpa,qemu_fw_cfg: features, cleanups, and fixes.

   - partial support for < MAX_ORDER - 1 granularity for virtio-mem

   - driver_override for vdpa

   - sysfs ABI documentation for vdpa

   - multiqueue config support for mlx5 vdpa

   - and misc fixes, cleanups"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (42 commits)
  vdpa/mlx5: Fix tracking of current number of VQs
  vdpa/mlx5: Fix is_index_valid() to refer to features
  vdpa: Protect vdpa reset with cf_mutex
  vdpa: Avoid taking cf_mutex lock on get status
  vdpa/vdpa_sim_net: Report max device capabilities
  vdpa: Use BIT_ULL for bit operations
  vdpa/vdpa_sim: Configure max supported virtqueues
  vdpa/mlx5: Report max device capabilities
  vdpa: Support reporting max device capabilities
  vdpa/mlx5: Restore cur_num_vqs in case of failure in change_num_qps()
  vdpa: Add support for returning device configuration information
  vdpa/mlx5: Support configuring max data virtqueue
  vdpa/mlx5: Fix config_attr_mask assignment
  vdpa: Allow to configure max data virtqueues
  vdpa: Read device configuration only if FEATURES_OK
  vdpa: Sync calls set/get config/status with cf_mutex
  vdpa/mlx5: Distribute RX virtqueues in RQT object
  vdpa: Provide interface to read driver features
  vdpa: clean up get_config_size ret value handling
  virtio_ring: mark ring unused on error
  ...
2022-01-18 10:05:48 +02:00
Linus Torvalds
46a10fc3a2 remoteproc updates for v5.17
This introduces support for controlling the Cortex R7 co-processor in
 Renesas Gen3, support for R5F clusters and C71x DSPs on TI J721S2 and
 compute, audio and modem subsystems on Qualcomm SM6350.
 
 It fixes a couple of sparse errors related to memcpy_to/fromio and
 corrects the kerneldoc spelling of "Return:".
 
 The stm32 driver no longer attempts to communicate with the remote after
 the firmware has crashed.
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Merge tag 'rproc-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux

Pull remoteproc updates from Bjorn Andersson:
 "This introduces support for controlling the Cortex R7 co-processor in
  Renesas Gen3, support for R5F clusters and C71x DSPs on TI J721S2 and
  compute, audio and modem subsystems on Qualcomm SM6350.

  It fixes a couple of sparse errors related to memcpy_to/fromio and
  corrects the kerneldoc spelling of "Return:".

  The stm32 driver no longer attempts to communicate with the remote
  after the firmware has crashed"

* tag 'rproc-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux: (22 commits)
  remoteproc: stm32: Improve crash recovery time
  remoteproc: rcar_rproc: Remove trailing semicolon
  remoteproc: rcar_rproc: Fix pm_runtime_get_sync error check
  remoteproc: qcom: pas: Add SM6350 CDSP support
  remoteproc: qcom: pas: Add SM6350 ADSP support
  remoteproc: qcom: pas: Add SM6350 MPSS support
  dt-bindings: remoteproc: qcom: pas: Add SM6350 adsp, cdsp & mpss
  remoteproc: qcom: pas: Add missing power-domain "mxc" for CDSP
  remoteproc: imx_rproc: correct firmware reload
  remoteproc: qcom: pil_info: Don't memcpy_toio more than is provided
  remoteproc: Add Renesas rcar driver
  dt-bindings: remoteproc: Add Renesas R-Car
  remoteproc: Fix remaining wrong return formatting in documentation
  MAINTAINERS: Removing Ohad from remoteproc/rpmsg maintenance
  remoteproc: ingenic: Request IRQ disabled
  remoteproc: k3-r5: Extend support for R5F clusters on J721S2 SoCs
  remoteproc: k3-dsp: Extend support for C71x DSPs on J721S2 SoCs
  dt-bindings: remoteproc: k3-dsp: Update bindings for J721S2 SoCs
  dt-bindings: remoteproc: k3-r5f: Update bindings for J721S2 SoCs
  remoteproc: coredump: Correct argument 2 type for memcpy_fromio
  ...
2022-01-18 09:32:34 +02:00
Linus Torvalds
fc9d6952a4 rpmsg updates for v5.17
This adds pr_fmt for the rpmsg_char driver, fixes error handling in
 rpmsg_dev_probe() and corrects the spelling of "Return:" in various
 places, in order to correct kerneldoc.
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Merge tag 'rpmsg-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux

Pull rpmsg updates from Bjorn Andersson:
 "This adds pr_fmt for the rpmsg_char driver, fixes error handling in
  rpmsg_dev_probe() and corrects the spelling of "Return:" in various
  places, in order to fix kerneldoc"

* tag 'rpmsg-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
  rpmsg: core: Clean up resources on announce_create failure.
  rpmsg: Fix documentation return formatting
  rpmsg: char: Add pr_fmt() to prefix messages
2022-01-18 09:27:40 +02:00
Jamie Hill-Daniel
722d94847d vfs: fs_context: fix up param length parsing in legacy_parse_param
The "PAGE_SIZE - 2 - size" calculation in legacy_parse_param() is an
unsigned type so a large value of "size" results in a high positive
value instead of a negative value as expected.  Fix this by getting rid
of the subtraction.

Signed-off-by: Jamie Hill-Daniel <jamie@hill-daniel.co.uk>
Signed-off-by: William Liu <willsroot@protonmail.com>
Tested-by: Salvatore Bonaccorso <carnil@debian.org>
Tested-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-01-18 09:23:19 +02:00
Linus Torvalds
8357f6fb3d More power management updates for 5.17-rc1
This is a continuation of the rework of device power management
 macros used for declaring device power management callbacks (Paul
 Cercueil).
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Merge tag 'pm-5.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
 "This is a continuation of the rework of device power management macros
  used for declaring device power management callbacks (Paul Cercueil)"

* tag 'pm-5.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  iio: pressure: bmp280: Use new PM macros
  PM: runtime: Add EXPORT[_GPL]_RUNTIME_DEV_PM_OPS macros
  PM: runtime: Add DEFINE_RUNTIME_DEV_PM_OPS() macro
  PM: core: Add EXPORT[_GPL]_SIMPLE_DEV_PM_OPS macros
  PM: core: Remove static qualifier in DEFINE_SIMPLE_DEV_PM_OPS macro
  PM: core: Remove DEFINE_UNIVERSAL_DEV_PM_OPS() macro
2022-01-18 09:13:30 +02:00
Linus Torvalds
6a8d7fbf1c More ACPI updates for 5.17-rc1
- Add support for the the Platform Firmware Runtime Update and
    Telemetry (PFRUT) interface based on ACPI to allow certain pieces
    of the platform firmware to be updated without restarting the
    system and to provide a mechanism for collecting platform firmware
    telemetry data (Chen Yu, Dan Carpenter, Yang Yingliang).
 
  - Ignore E820 reservations covering PCI host bridge windows on
    sufficiently recent x86 systems to avoid issues with allocating
    PCI BARs on systems where the E820 reservations cover the entire
    PCI host bridge memory window returned by the _CRS object in the
    system's ACPI tables (Hans de Goede).
 
  - Fix and clean up acpi_scan_init() (Rafael Wysocki).
 
  - Add more sanity checking to ACPI SPCR tables parsing (Mark
    Langsdorf).
 
  - Fix up ACPI APD (AMD Soc) driver initialization (Jiasheng Jiang).
 
  - Drop unnecessary "static" from the ACPI PCC address space handling
    driver added recently (kernel test robot).
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Merge tag 'acpi-5.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more ACPI updates from Rafael Wysocki:
 "The most significant item here is the Platform Firmware Runtime Update
  and Telemetry (PFRUT) support designed to allow certain pieces of the
  platform firmware to be updated on the fly, among other things.

  Also important is the e820 handling change on x86 that should work
  around PCI BAR allocation issues on some systems shipping since 2019.

  The rest is just a handful of assorted fixes and cleanups on top of
  the ACPI material merged previously.

  Specifics:

   - Add support for the the Platform Firmware Runtime Update and
     Telemetry (PFRUT) interface based on ACPI to allow certain pieces
     of the platform firmware to be updated without restarting the
     system and to provide a mechanism for collecting platform firmware
     telemetry data (Chen Yu, Dan Carpenter, Yang Yingliang).

   - Ignore E820 reservations covering PCI host bridge windows on
     sufficiently recent x86 systems to avoid issues with allocating PCI
     BARs on systems where the E820 reservations cover the entire PCI
     host bridge memory window returned by the _CRS object in the
     system's ACPI tables (Hans de Goede).

   - Fix and clean up acpi_scan_init() (Rafael Wysocki).

   - Add more sanity checking to ACPI SPCR tables parsing (Mark
     Langsdorf).

   - Fix up ACPI APD (AMD Soc) driver initialization (Jiasheng Jiang).

   - Drop unnecessary "static" from the ACPI PCC address space handling
     driver added recently (kernel test robot)"

* tag 'acpi-5.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: PCC: pcc_ctx can be static
  ACPI: scan: Rename label in acpi_scan_init()
  ACPI: scan: Simplify initialization of power and sleep buttons
  ACPI: scan: Change acpi_scan_init() return value type to void
  ACPI: SPCR: check if table->serial_port.access_width is too wide
  ACPI: APD: Check for NULL pointer after calling devm_ioremap()
  x86/PCI: Ignore E820 reservations for bridge windows on newer systems
  ACPI: pfr_telemetry: Fix info leak in pfrt_log_ioctl()
  ACPI: pfr_update: Fix return value check in pfru_write()
  ACPI: tools: Introduce utility for firmware updates/telemetry
  ACPI: Introduce Platform Firmware Runtime Telemetry driver
  ACPI: Introduce Platform Firmware Runtime Update device driver
  efi: Introduce EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER and corresponding structures
2022-01-18 08:51:51 +02:00
Ronnie Sahlberg
5455b9ecaf cifs: serialize all mount attempts
RHBZ: 2008434

Some servers, such as Windows2016 have a very low number of concurrent mounts that
they allow from each client.
This can be a problem if you have a more than a handful (==3 in this case)
of cifs entries in your fstab and cause a number of the mounts there to randomly fail.

Add a global mutex and use it to serialize all mount attempts.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2022-01-18 00:10:03 -06:00
Linus Torvalds
e3a8b6a1e7 slab changes for 5.17 - part 2
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Merge tag 'slab-for-5.17-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull more slab updates from Vlastimil Babka:
 "Finish the conversion to struct slab by removing slab-specific fields
  from struct page.

  The first slab update (see merge commit ca1a46d6f5) did most of the
  conversion, but there was also series in iommu tree removing the
  iommu's usage of struct page 'freelist' field, blocking the final
  struct page cleanup.

  Now that the iommu changes have been merged, we can finish the job"

* tag 'slab-for-5.17-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm: Remove slab from struct page
2022-01-18 06:40:47 +02:00
Linus Torvalds
62b488875c Fixes for ARC for 5.17
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Merge tag 'arc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:
 "Nothing too exciting for now"

* tag 'arc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  arc: use swap() to make code cleaner
  arc: perf: Move static structs to where they're really used
  ARC: perf: fix misleading comment about pmu vs counter stop
  arc: Replace lkml.org links with lore
  ARC: perf: Remove redundant initialization of variable idx
  ARC: thread_info.h: correct two typos in a comment
2022-01-18 06:36:35 +02:00
Linus Torvalds
57d17378a4 perf tools changes for v5.17: 1st batch
New features:
 
 - Add 'trace' subcommand for 'perf ftrace', setting the stage for more
   'perf ftrace' subcommands. Not using a subcommand yields the previous
   behaviour of 'perf ftrace'.
 
 - Add 'latency' subcommand to 'perf ftrace', that can use the function
   graph tracer or a BPF optimized one, via the -b/--use-bpf option.
 
   E.g.:
 
   $ sudo perf ftrace latency -a -T mutex_lock sleep 1
   #   DURATION     |      COUNT | GRAPH                          |
        0 - 1    us |       4596 | ########################       |
        1 - 2    us |       1680 | #########                      |
        2 - 4    us |       1106 | #####                          |
        4 - 8    us |        546 | ##                             |
        8 - 16   us |        562 | ###                            |
       16 - 32   us |          1 |                                |
       32 - 64   us |          0 |                                |
       64 - 128  us |          0 |                                |
      128 - 256  us |          0 |                                |
      256 - 512  us |          0 |                                |
      512 - 1024 us |          0 |                                |
        1 - 2    ms |          0 |                                |
        2 - 4    ms |          0 |                                |
        4 - 8    ms |          0 |                                |
        8 - 16   ms |          0 |                                |
       16 - 32   ms |          0 |                                |
       32 - 64   ms |          0 |                                |
       64 - 128  ms |          0 |                                |
      128 - 256  ms |          0 |                                |
      256 - 512  ms |          0 |                                |
      512 - 1024 ms |          0 |                                |
        1 - ...   s |          0 |                                |
 
   The original implementation of this command was in the bcc tool.
 
 - Support --cputype option for hybrid events in 'perf stat'.
 
 Improvements:
 
 - Call chain improvements for ARM64.
 
 - No need to do any affinity setup when profiling pids.
 
 - Reduce multiplexing with duration_time in 'perf stat' metrics.
 
 - Improve error message for uncore events, stating that some event groups are
   can only be used in system wide (-a) mode.
 
 - perf stat metric group leader fixes/improvements, including arch specific
   changes to better support Intel topdown events.
 
 - Probe non-deprecated sysfs path 1st, i.e. try /sys/devices/system/cpu/cpuN/topology/thread_siblings
   first, then the old /sys/devices/system/cpu/cpuN/topology/core_cpus.
 
 - Disable debuginfod by default in 'perf record', to avoid stalls on distros
   such as Fedora 35.
 
 - Use unbuffered output in 'perf bench' when pipe/tee'ing to a file.
 
 - Enable ignore_missing_thread in 'perf trace'
 
 Fixes:
 
 - Avoid TUI crash when navigating in the annotation of recursive functions.
 
 - Fix hex dump character output in 'perf script'.
 
 - Fix JSON indentation to 4 spaces standard in the ARM vendor event files.
 
 - Fix use after free in metric__new().
 
 - Fix IS_ERR_OR_NULL() usage in the perf BPF loader.
 
 - Fix up cross-arch register support, i.e. when printing register names take
   into account the architecture where the perf.data file was collected.
 
 - Fix SMT fallback with large core counts.
 
 - Don't lower case MetricExpr when parsing JSON files so as not to lose info
   such as the ":G" event modifier in metrics.
 
 perf test:
 
 - Add basic stress test for sigtrap handling to 'perf test'.
 
 - Fix 'perf test' failures on s/390
 
 - Enable system wide for metricgroups test in 'perf test´.
 
 - Use 3 digits for test numbering now we can have more tests.
 
 Arch specific:
 
 - Add events for Arm Neoverse N2 in the ARM JSON vendor event files
 
 - Support PERF_MEM_LVLNUM encodings in powerpc, that came from a single
   patch series, where I incorrectly merged the kernel bits, that were then
   reverted after coordination with Michael Ellerman and Stephen Rothwell.
 
 - Add ARM SPE total latency as PERF_SAMPLE_WEIGHT.
 
 - Update AMD documentation, with info on raw event encoding.
 
 - Add support for global and local variants of the "p_stage_cyc" sort key,
   applicable to perf.data files collected on powerpc.
 
 - Remove duplicate and incorrect aux size checks in the ARM CoreSight ETM code.
 
 Refactorings:
 
 - Add a perf_cpu abstraction to disambiguate CPUs and CPU map indexes, fixing
   problems along the way.
 
 - Document CPU map methods.
 
 UAPI sync:
 
 - Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy'
 
 - Sync UAPI files with the kernel sources: drm, msr-index, cpufeatures.
 
 Build system
 
 - Enable warnings through HOSTCFLAGS.
 
 - Drop requirement for libstdc++.so for libopencsd check
 
 libperf:
 
 - Make libperf adopt perf_counts_values__scale() from tools/perf/util/.
 
 - Add a stat multiplexing test to libperf.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v5.17-2022-01-16' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tool updates from Arnaldo Carvalho de Melo:
 "New features:

   - Add 'trace' subcommand for 'perf ftrace', setting the stage for
     more 'perf ftrace' subcommands. Not using a subcommand yields the
     previous behaviour of 'perf ftrace'.

   - Add 'latency' subcommand to 'perf ftrace', that can use the
     function graph tracer or a BPF optimized one, via the -b/--use-bpf
     option.

     E.g.:

	$ sudo perf ftrace latency -a -T mutex_lock sleep 1
	#   DURATION     |      COUNT | GRAPH                          |
	     0 - 1    us |       4596 | ########################       |
	     1 - 2    us |       1680 | #########                      |
	     2 - 4    us |       1106 | #####                          |
	     4 - 8    us |        546 | ##                             |
	     8 - 16   us |        562 | ###                            |
	    16 - 32   us |          1 |                                |
	    32 - 64   us |          0 |                                |
	    64 - 128  us |          0 |                                |
	   128 - 256  us |          0 |                                |
	   256 - 512  us |          0 |                                |
	   512 - 1024 us |          0 |                                |
	     1 - 2    ms |          0 |                                |
	     2 - 4    ms |          0 |                                |
	     4 - 8    ms |          0 |                                |
	     8 - 16   ms |          0 |                                |
	    16 - 32   ms |          0 |                                |
	    32 - 64   ms |          0 |                                |
	    64 - 128  ms |          0 |                                |
	   128 - 256  ms |          0 |                                |
	   256 - 512  ms |          0 |                                |
	   512 - 1024 ms |          0 |                                |
	     1 - ...   s |          0 |                                |

     The original implementation of this command was in the bcc tool.

   - Support --cputype option for hybrid events in 'perf stat'.

  Improvements:

   - Call chain improvements for ARM64.

   - No need to do any affinity setup when profiling pids.

   - Reduce multiplexing with duration_time in 'perf stat' metrics.

   - Improve error message for uncore events, stating that some event
     groups are can only be used in system wide (-a) mode.

   - perf stat metric group leader fixes/improvements, including arch
     specific changes to better support Intel topdown events.

   - Probe non-deprecated sysfs path first, i.e. try the path
     /sys/devices/system/cpu/cpuN/topology/thread_siblings first, then
     the old /sys/devices/system/cpu/cpuN/topology/core_cpus.

   - Disable debuginfod by default in 'perf record', to avoid stalls on
     distros such as Fedora 35.

   - Use unbuffered output in 'perf bench' when pipe/tee'ing to a file.

   - Enable ignore_missing_thread in 'perf trace'

  Fixes:

   - Avoid TUI crash when navigating in the annotation of recursive
     functions.

   - Fix hex dump character output in 'perf script'.

   - Fix JSON indentation to 4 spaces standard in the ARM vendor event
     files.

   - Fix use after free in metric__new().

   - Fix IS_ERR_OR_NULL() usage in the perf BPF loader.

   - Fix up cross-arch register support, i.e. when printing register
     names take into account the architecture where the perf.data file
     was collected.

   - Fix SMT fallback with large core counts.

   - Don't lower case MetricExpr when parsing JSON files so as not to
     lose info such as the ":G" event modifier in metrics.

  perf test:

   - Add basic stress test for sigtrap handling to 'perf test'.

   - Fix 'perf test' failures on s/390

   - Enable system wide for metricgroups test in 'perf test´.

   - Use 3 digits for test numbering now we can have more tests.

  Arch specific:

   - Add events for Arm Neoverse N2 in the ARM JSON vendor event files

   - Support PERF_MEM_LVLNUM encodings in powerpc, that came from a
     single patch series, where I incorrectly merged the kernel bits,
     that were then reverted after coordination with Michael Ellerman
     and Stephen Rothwell.

   - Add ARM SPE total latency as PERF_SAMPLE_WEIGHT.

   - Update AMD documentation, with info on raw event encoding.

   - Add support for global and local variants of the "p_stage_cyc" sort
     key, applicable to perf.data files collected on powerpc.

   - Remove duplicate and incorrect aux size checks in the ARM CoreSight
     ETM code.

  Refactorings:

   - Add a perf_cpu abstraction to disambiguate CPUs and CPU map
     indexes, fixing problems along the way.

   - Document CPU map methods.

  UAPI sync:

   - Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench
     mem memcpy'

   - Sync UAPI files with the kernel sources: drm, msr-index,
     cpufeatures.

  Build system

   - Enable warnings through HOSTCFLAGS.

   - Drop requirement for libstdc++.so for libopencsd check

  libperf:

   - Make libperf adopt perf_counts_values__scale() from tools/perf/util/.

   - Add a stat multiplexing test to libperf"

* tag 'perf-tools-for-v5.17-2022-01-16' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (115 commits)
  perf record: Disable debuginfod by default
  perf evlist: No need to do any affinity setup when profiling pids
  perf cpumap: Add is_dummy() method
  perf metric: Fix metric_leader
  perf cputopo: Fix CPU topology reading on s/390
  perf metricgroup: Fix use after free in metric__new()
  libperf tests: Update a use of the new cpumap API
  perf arm: Fix off-by-one directory path
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  tools headers cpufeatures: Sync with the kernel sources
  tools headers UAPI: Update tools's copy of drm.h header
  tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy'
  perf pmu-events: Don't lower case MetricExpr
  perf expr: Add debug logging for literals
  perf tools: Probe non-deprecated sysfs path 1st
  perf tools: Fix SMT fallback with large core counts
  perf cpumap: Give CPUs their own type
  perf stat: Correct first_shadow_cpu to return index
  perf script: Fix flipped index and cpu
  perf c2c: Use more intention revealing iterator
  ...
2022-01-18 06:32:11 +02:00
Linus Torvalds
f0033681f0 orangefs: two fixes
Fix the size of a memory allocation in orangefs_bufmap_alloc()
   Christophe JAILLET
 
   use default_groups in kobj_type
   Greg KH
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Merge tag 'for-linus-5.17-ofs-1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux

Pull orangefs fixes from Mike Marshall:
 "Two fixes:

   - Fix the size of a memory allocation in orangefs_bufmap_alloc()
     (Christophe JAILLET)

   - Use default_groups in kobj_type (Greg KH)"

* tag 'for-linus-5.17-ofs-1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc()
  orangefs: use default_groups in kobj_type
2022-01-18 06:26:50 +02:00
Matthias Schiffer
d8adf5b92a scripts/dtc: dtx_diff: remove broken example from help text
dtx_diff suggests to use <(...) syntax to pipe two inputs into it, but
this has never worked: The /proc/self/fds/... paths passed by the shell
will fail the `[ -f "${dtx}" ] && [ -r "${dtx}" ]` check in compile_to_dts,
but even with this check removed, the function cannot work: hexdump will
eat up the DTB magic, making the subsequent dtc call fail, as a pipe
cannot be rewound.

Simply remove this broken example, as there is already an alternative one
that works fine.

Fixes: 10eadc253d ("dtc: create tool to diff device trees")
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220113081918.10387-1-matthias.schiffer@ew.tq-group.com
2022-01-17 16:26:44 -06:00
Stanislav Jakubek
af35a8b5ba dt-bindings: trivial-devices: fix double spaces in comments
Cleanup double spaces in some of the comments.

Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/13b3f66efd3b20f1d9bbb9eff1eca00757ac5367.1642080090.git.stano.jakubek@gmail.com
2022-01-17 16:26:44 -06:00
Stanislav Jakubek
154e5f296e dt-bindings: trivial-devices: fix swapped comments
sparkfun,qwiic-joystick and st,24c256 had their comments incorrectly
swapped. Swap them to make them correct.

Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/7dc6ddb0b042cd243b2875e9aea81cad541d1c6b.1642080090.git.stano.jakubek@gmail.com
2022-01-17 16:26:44 -06:00
Stanislav Jakubek
364da22cb3 dt-bindings: vendor-prefixes: add Wingtech
The vendor prefix for Wingtech [1] is used in device tree [2], but was
not documented so far. Add it to the schema to document it.

[1] http://www.wingtech.com/en
[2] arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts

Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220113103110.GA4488@standask-GA-A55M-S2HP
2022-01-17 16:26:44 -06:00
Stanislav Jakubek
6f2dfed0b6 dt-bindings: vendor-prefixes: add Thundercomm
The vendor prefix for Thundercomm [1] is used in device tree [2], but
was not documented so far. Add it to the schema to document it.

[1] https://www.thundercomm.com/
[2] arch/arm64/boot/dts/qcom/sdm845-db845c.dts

Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220113103036.GA4456@standask-GA-A55M-S2HP
2022-01-17 16:26:44 -06:00
Stanislav Jakubek
ca146834d6 dt-bindings: vendor-prefixes: add Huawei
The vendor prefix for Huawei [1] is used in device trees [2][3], but was
not documented so far. Add it to the schema to document it.

[1] https://www.huawei.com/en/
[2] arch/arm64/boot/dts/qcom/msm8916-huawei-g7.dts
[3] arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts

Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220113103005.GA4421@standask-GA-A55M-S2HP
2022-01-17 16:26:44 -06:00
Stanislav Jakubek
8316cbbafd dt-bindings: vendor-prefixes: add F(x)tec
The vendor prefix for F(x)tec [1] is used in device tree [2], but was
not documented so far. Add it to the schema to document it.

[1] https://www.fxtec.com/
[2] arch/arm64/boot/dts/qcom/msm8998-fxtec-pro1.dts

Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220113102926.GA4388@standask-GA-A55M-S2HP
2022-01-17 16:26:43 -06:00
Stanislav Jakubek
38a9840e2e dt-bindings: vendor-prefixes: add 8devices
The vendor prefix for 8devices [1] is used in device tree [2], but was
not documented so far. Add it to the schema to document it.

[1] https://www.8devices.com/
[2] arch/arm/boot/dts/qcom-ipq4018-jalapeno.dts

Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220113102842.GA4357@standask-GA-A55M-S2HP
2022-01-17 16:26:43 -06:00
Sander Vanheule
2ba144e68e dt-bindings: power: reset: gpio-restart: Correct default priority
Commit bcd56fe1aa ("power: reset: gpio-restart: increase priority
slightly") changed the default restart priority 129, but did not update
the documentation. Correct this, so the driver and documentation have
the same default value.

Signed-off-by: Sander Vanheule <sander@svanheule.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220110214456.67087-1-sander@svanheule.net
2022-01-17 16:26:43 -06:00
Huichun Feng
cc2cf6796a docs: ftrace: fix ambiguous sentence
The sentence looks ambiguous, rephrase it by adding ", there".

Signed-off-by: Huichun Feng <foxhoundsk.tw@gmail.com>
Signed-off-by: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw>
Signed-off-by: Chun-Hung Tseng <henrybear327@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20220111052000.2675944-1-foxhoundsk.tw@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-17 14:56:16 -07:00
Wang Cheng
6b0764598d docs: staging/tee.rst: fix two typos found while reading
Signed-off-by: Wang Cheng <wanngchenng@gmail.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20220115125236.34886-1-wanngchenng@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-17 14:55:03 -07:00
Eugene Korenevsky
a2809d0e16 cifs: quirk for STATUS_OBJECT_NAME_INVALID returned for non-ASCII dfs refs
Windows SMB server responds with STATUS_OBJECT_NAME_INVALID code to
SMB2 QUERY_INFO request for "\<server>\<dfsname>\<linkpath>" DFS reference,
where <dfsname> contains non-ASCII unicode symbols.

Check such DFS reference and emulate -EREMOTE if it is actual.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215440
Signed-off-by: Eugene Korenevsky <ekorenevsky@astralinux.ru>
Signed-off-by: Steve French <stfrench@microsoft.com>
2022-01-17 13:28:25 -06:00
Eugene Korenevsky
7eacba3b00 cifs: alloc_path_with_tree_prefix: do not append sep. if the path is empty
alloc_path_with_tree_prefix() concatenates tree prefix and the path.
Windows CIFS client does not add separator after the tree prefix if the path
is empty. Let's do the same.

This fixes mounting DFS namespaces with names containing non-ASCII symbols.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215440
Signed-off-by: Eugene Korenevsky <ekorenevsky@astralinux.ru>
Signed-off-by: Steve French <stfrench@microsoft.com>
2022-01-17 13:28:05 -06:00
Srinivas Pandruvada
e5b54867f4 thermal: int340x: Add Raptor Lake PCI device id
Add Raptor Lake PCI ID for processor thermal device.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-01-17 19:48:07 +01:00
Srinivas Pandruvada
a95be874d2 thermal: int340x: Support Raptor Lake
Add Raptor Lake ACPI IDs for DPTF devices.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-01-17 19:48:07 +01:00
Srinivas Pandruvada
a510c78e5b ACPI: DPTF: Support Raptor Lake
Add Raptor Lake ACPI IDs for DPTF devices.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-01-17 19:45:38 +01:00
Rafael J. Wysocki
f684b10751 ACPI: CPPC: Drop redundant local variable from cpc_read()
The ret_val local variable in cpc_read() is not necessary, so
eliminate it.

No functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Huang Rui <ray.huang@amd.com>
2022-01-17 19:38:55 +01:00
Rafael J. Wysocki
5f51c7ce1d ACPI: CPPC: Fix up I/O port access in cpc_read()
The code as currently implemented does not work on big endian systems,
so fix it up.

Fixes: a2c8f92bea ("ACPI: CPPC: Implement support for SystemIO registers")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/linux-acpi/20220111092928.GA24968@kili/
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Huang Rui <ray.huang@amd.com>
2022-01-17 19:38:55 +01:00
Yang Li
74ce6135ae cifs: clean up an inconsistent indenting
Eliminate the follow smatch warning:
fs/cifs/sess.c:1581 sess_auth_rawntlmssp_authenticate() warn:
inconsistent indenting

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2022-01-17 12:00:37 -06:00
Shyam Prasad N
e3548aaf41 cifs: free ntlmsspblob allocated in negotiate
One of my previous fixes:
cifs: send workstation name during ntlmssp session setup
...changed the prototype of build_ntlmssp_negotiate_blob
from being allocated by the caller to being allocated within
the function. The caller needs to free this object too.
While SMB2 version of the caller did it, I forgot to free
for the SMB1 version. Fixing that here.

Fixes: 49bd49f983 ("cifs: send workstation name during ntlmssp session setup")
Cc: stable@vger.kernel.org # 5.16
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2022-01-17 11:56:19 -06:00
Like Xu
4732f2444a KVM: x86: Making the module parameter of vPMU more common
The new module parameter to control PMU virtualization should apply
to Intel as well as AMD, for situations where userspace is not trusted.
If the module parameter allows PMU virtualization, there could be a
new KVM_CAP or guest CPUID bits whereby userspace can enable/disable
PMU virtualization on a per-VM basis.

If the module parameter does not allow PMU virtualization, there
should be no userspace override, since we have no precedent for
authorizing that kind of override. If it's false, other counter-based
profiling features (such as LBR including the associated CPUID bits
if any) will not be exposed.

Change its name from "pmu" to "enable_pmu" as we have temporary
variables with the same name in our code like "struct kvm_pmu *pmu".

Fixes: b1d66dad65 ("KVM: x86/svm: Add module param to control PMU virtualization")
Suggested-by : Jim Mattson <jmattson@google.com>
Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220111073823.21885-1-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-17 12:56:03 -05:00
Vitaly Kuznetsov
ecebb966ac KVM: selftests: Test KVM_SET_CPUID2 after KVM_RUN
KVM forbids KVM_SET_CPUID2 after KVM_RUN was performed on a vCPU unless
the supplied CPUID data is equal to what was previously set. Test this.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220117150542.2176196-5-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-17 12:30:24 -05:00
Vitaly Kuznetsov
9e6d484f99 KVM: selftests: Rename 'get_cpuid_test' to 'cpuid_test'
In preparation to reusing the existing 'get_cpuid_test' for testing
"KVM_SET_CPUID{,2} after KVM_RUN" rename it to 'cpuid_test' to avoid
the confusion.

No functional change intended.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220117150542.2176196-4-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-17 12:30:15 -05:00
Vitaly Kuznetsov
c6617c61e8 KVM: x86: Partially allow KVM_SET_CPUID{,2} after KVM_RUN
Commit feb627e8d6 ("KVM: x86: Forbid KVM_SET_CPUID{,2} after KVM_RUN")
forbade changing CPUID altogether but unfortunately this is not fully
compatible with existing VMMs. In particular, QEMU reuses vCPU fds for
CPU hotplug after unplug and it calls KVM_SET_CPUID2. Instead of full ban,
check whether the supplied CPUID data is equal to what was previously set.

Reported-by: Igor Mammedov <imammedo@redhat.com>
Fixes: feb627e8d6 ("KVM: x86: Forbid KVM_SET_CPUID{,2} after KVM_RUN")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220117150542.2176196-3-vkuznets@redhat.com>
Cc: stable@vger.kernel.org
[Do not call kvm_find_cpuid_entry repeatedly. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-17 12:29:41 -05:00
Rafael J. Wysocki
e3daa2607b Merge branch 'acpi-pfrut'
Merge support for the Platform Firmware Runtime Update and Telemetry
interface based on ACPI.

The interface provided here allows updating certain pieces of the
platform firmware without restarting the system and collecting
platform firmware telemetry data.

This also includes a utility for accesing the new interface from user
space.

* acpi-pfrut:
  ACPI: pfr_telemetry: Fix info leak in pfrt_log_ioctl()
  ACPI: pfr_update: Fix return value check in pfru_write()
  ACPI: tools: Introduce utility for firmware updates/telemetry
  ACPI: Introduce Platform Firmware Runtime Telemetry driver
  ACPI: Introduce Platform Firmware Runtime Update device driver
  efi: Introduce EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER and corresponding structures
2022-01-17 18:25:57 +01:00
Vitaly Kuznetsov
ee3a5f9e3d KVM: x86: Do runtime CPUID update before updating vcpu->arch.cpuid_entries
kvm_update_cpuid_runtime() mangles CPUID data coming from userspace
VMM after updating 'vcpu->arch.cpuid_entries', this makes it
impossible to compare an update with what was previously
supplied. Introduce __kvm_update_cpuid_runtime() version which can be
used to tweak the input before it goes to 'vcpu->arch.cpuid_entries'
so the upcoming update check can compare tweaked data.

No functional change intended.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220117150542.2176196-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-17 12:25:46 -05:00
Like Xu
a21864486f KVM: x86/pmu: Fix available_event_types check for REF_CPU_CYCLES event
According to CPUID 0x0A.EBX bit vector, the event [7] should be the
unrealized event "Topdown Slots" instead of the *kernel* generalized
common hardware event "REF_CPU_CYCLES", so we need to skip the cpuid
unavaliblity check in the intel_pmc_perf_hw_id() for the last
REF_CPU_CYCLES event and update the confusing comment.

If the event is marked as unavailable in the Intel guest CPUID
0AH.EBX leaf, we need to avoid any perf_event creation, whether
it's a gp or fixed counter. To distinguish whether it is a rejected
event or an event that needs to be programmed with PERF_TYPE_RAW type,
a new special returned value of "PERF_COUNT_HW_MAX + 1" is introduced.

Fixes: 62079d8a43 ("KVM: PMU: add proper support for fixed counter 2")
Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220105051509.69437-1-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-17 12:19:41 -05:00
Darrick J. Wong
b3bb9413e7 xfs: remove the XFS_IOC_{ALLOC,FREE}SP* definitions
Now that we've made these ioctls defunct, move them from xfs_fs.h to
xfs_ioctl.c, which effectively removes them from the publicly supported
ioctl interfaces for XFS.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
2022-01-17 09:17:11 -08:00
Darrick J. Wong
4d1b97f9ce xfs: kill the XFS_IOC_{ALLOC,FREE}SP* ioctls
According to the glibc compat header for Irix 4, these ioctls originated
in April 1991 as a (somewhat clunky) way to preallocate space at the end
of a file on an EFS filesystem.  XFS, which was released in Irix 5.3 in
December 1993, picked up these ioctls to maintain compatibility and they
were ported to Linux in the early 2000s.

Recently it was pointed out to me they still lurk in the kernel, even
though the Linux fallocate syscall supplanted the functionality a long
time ago.  fstests doesn't seem to include any real functional or stress
tests for these ioctls, which means that the code quality is ... very
questionable.  Most notably, it was a stale disk block exposure vector
for 21 years and nobody noticed or complained.  As mature programmers
say, "If you're not testing it, it's broken."

Given all that, let's withdraw these ioctls from the XFS userspace API.
Normally we'd set a long deprecation process, but I estimate that there
aren't any real users, so let's trigger a warning in dmesg and return
-ENOTTY.

See: CVE-2021-4155

Augments: 983d8e60f5 ("xfs: map unwritten blocks in XFS_IOC_{ALLOC,FREE}SP just like fallocate")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2022-01-17 09:16:41 -08:00
Darrick J. Wong
9dec0368b9 xfs: remove the XFS_IOC_FSSETDM definitions
Remove the definitions for these ioctls, since the functionality (and,
weirdly, the 32-bit compat ioctl definitions) were removed from the
kernel in November 2019.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2022-01-17 09:16:40 -08:00
Rafael J. Wysocki
ebf8b135c0 Merge branches 'acpi-x86', 'acpi-tables', 'acpi-soc' and 'acpi-pcc'
Merge additional ACPI-related updates for 5.17-rc1:

 - Ignore E820 reservations covering PCI host bridge windows on
   sufficiently recent x86 systems to avoid issues with allocating
   PCI BARs on systems where the E820 reservations cover the entire
   PCI host bridge memory window returned by the _CRS object in the
   system's ACPI tables (Hans de Goede).

 - Add more sanity checking to ACPI SPCR tables parsing (Mark
   Langsdorf).

 - Fix up ACPI APD (AMD Soc) driver initialization (Jiasheng Jiang).

 - Drop unnecessary "static" from the ACPI PCC address space handling
   driver added recently (kernel test robot).

* acpi-x86:
  x86/PCI: Ignore E820 reservations for bridge windows on newer systems

* acpi-tables:
  ACPI: SPCR: check if table->serial_port.access_width is too wide

* acpi-soc:
  ACPI: APD: Check for NULL pointer after calling devm_ioremap()

* acpi-pcc:
  ACPI: PCC: pcc_ctx can be static
2022-01-17 18:15:07 +01:00
Russell King (Oracle)
5765cee119 net: sfp: fix high power modules without diagnostic monitoring
Commit 7cfa9c92d0 ("net: sfp: avoid power switch on address-change
modules") unintetionally changed the semantics for high power modules
without the digital diagnostics monitoring. We repeatedly attempt to
read the power status from the non-existing 0xa2 address in a futile
hope this failure is temporary:

[    8.856051] sfp sfp-eth3: module NTT              0000000000000000 rev 0000  sn 0000000000000000 dc 160408
[    8.865843] mvpp2 f4000000.ethernet eth3: switched to inband/1000base-x link mode
[    8.873469] sfp sfp-eth3: Failed to read EEPROM: -5
[    8.983251] sfp sfp-eth3: Failed to read EEPROM: -5
[    9.103250] sfp sfp-eth3: Failed to read EEPROM: -5

We previosuly assumed such modules were powered up in the correct mode,
continuing without further configuration as long as the required power
class was supported by the host.

Restore this behaviour, while preserving the intent of subsequent
patches to avoid the "Address Change Sequence not supported" warning
if we are not going to be accessing the DDM address.

Fixes: 7cfa9c92d0 ("net: sfp: avoid power switch on address-change modules")
Reported-by: 照山周一郎 <teruyama@springboard-inc.jp>
Tested-by: 照山周一郎 <teruyama@springboard-inc.jp>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-17 16:30:44 +00:00
Ming Lei
850fd2abbe block: cleanup q->srcu
srcu structure has to be cleanup via cleanup_srcu_struct(), so fix it.

Reported-by: syzbot+4f789823c1abc5accf13@syzkaller.appspotmail.com
Fixes: 704b914f15 ("blk-mq: move srcu from blk_mq_hw_ctx to request_queue")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220111123401.520192-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-01-17 07:24:45 -07:00
GuoYong Zheng
e6a2e5116e block: Remove unnecessary variable assignment
The parameter "ret" should be zero when running to this line,
no need to set to zero again, remove it.

Signed-off-by: GuoYong Zheng <zhenggy@chinatelecom.cn>
Link: https://lore.kernel.org/r/1642414957-6785-1-git-send-email-zhenggy@chinatelecom.cn
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-01-17 07:24:04 -07:00
Tetsuo Handa
00358933f6 brd: remove brd_devices_mutex mutex
If brd_alloc() from brd_probe() is called before brd_alloc() from
brd_init() is called, module loading will fail with -EEXIST error.
To close this race, call __register_blkdev() just before leaving
brd_init().

Then, we can remove brd_devices_mutex mutex, for brd_device list
will no longer be accessed concurrently.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/6b074af7-c165-4fab-b7da-8270a4f6f6cd@i-love.sakura.ne.jp
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-01-17 07:19:40 -07:00