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resume support in vdpa/solidrun
structure size optimizations in virtio_pci
new pds_vdpa driver
immediate initialization mechanism for vdpa/ifcvf
interrupt bypass for vdpa/mlx5
multiple worker support for vhost
viirtio net in Intel F2000X-PL support for vdpa/ifcvf
fixes, cleanups all over the place
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:
- resume support in vdpa/solidrun
- structure size optimizations in virtio_pci
- new pds_vdpa driver
- immediate initialization mechanism for vdpa/ifcvf
- interrupt bypass for vdpa/mlx5
- multiple worker support for vhost
- viirtio net in Intel F2000X-PL support for vdpa/ifcvf
- fixes, cleanups all over the place
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (48 commits)
vhost: Make parameter name match of vhost_get_vq_desc()
vduse: fix NULL pointer dereference
vhost: Allow worker switching while work is queueing
vhost_scsi: add support for worker ioctls
vhost: allow userspace to create workers
vhost: replace single worker pointer with xarray
vhost: add helper to parse userspace vring state/file
vhost: remove vhost_work_queue
vhost_scsi: flush IO vqs then send TMF rsp
vhost_scsi: convert to vhost_vq_work_queue
vhost_scsi: make SCSI cmd completion per vq
vhost_sock: convert to vhost_vq_work_queue
vhost: convert poll work to be vq based
vhost: take worker or vq for flushing
vhost: take worker or vq instead of dev for queueing
vhost, vhost_net: add helper to check if vq has work
vhost: add vhost_worker pointer to vhost_virtqueue
vhost: dynamically allocate vhost_worker
vhost: create worker at end of vhost_dev_set_owner
virtio_bt: call scheduler when we free unused buffs
...
* Eager page splitting optimization for dirty logging, optionally
allowing for a VM to avoid the cost of hugepage splitting in the stage-2
fault path.
* Arm FF-A proxy for pKVM, allowing a pKVM host to safely interact with
services that live in the Secure world. pKVM intervenes on FF-A calls
to guarantee the host doesn't misuse memory donated to the hyp or a
pKVM guest.
* Support for running the split hypervisor with VHE enabled, known as
'hVHE' mode. This is extremely useful for testing the split
hypervisor on VHE-only systems, and paves the way for new use cases
that depend on having two TTBRs available at EL2.
* Generalized framework for configurable ID registers from userspace.
KVM/arm64 currently prevents arbitrary CPU feature set configuration
from userspace, but the intent is to relax this limitation and allow
userspace to select a feature set consistent with the CPU.
* Enable the use of Branch Target Identification (FEAT_BTI) in the
hypervisor.
* Use a separate set of pointer authentication keys for the hypervisor
when running in protected mode, as the host is untrusted at runtime.
* Ensure timer IRQs are consistently released in the init failure
paths.
* Avoid trapping CTR_EL0 on systems with Enhanced Virtualization Traps
(FEAT_EVT), as it is a register commonly read from userspace.
* Erratum workaround for the upcoming AmpereOne part, which has broken
hardware A/D state management.
RISC-V:
* Redirect AMO load/store misaligned traps to KVM guest
* Trap-n-emulate AIA in-kernel irqchip for KVM guest
* Svnapot support for KVM Guest
s390:
* New uvdevice secret API
* CMM selftest and fixes
* fix racy access to target CPU for diag 9c
x86:
* Fix missing/incorrect #GP checks on ENCLS
* Use standard mmu_notifier hooks for handling APIC access page
* Drop now unnecessary TR/TSS load after VM-Exit on AMD
* Print more descriptive information about the status of SEV and SEV-ES during
module load
* Add a test for splitting and reconstituting hugepages during and after
dirty logging
* Add support for CPU pinning in demand paging test
* Add support for AMD PerfMonV2, with a variety of cleanups and minor fixes
included along the way
* Add a "nx_huge_pages=never" option to effectively avoid creating NX hugepage
recovery threads (because nx_huge_pages=off can be toggled at runtime)
* Move handling of PAT out of MTRR code and dedup SVM+VMX code
* Fix output of PIC poll command emulation when there's an interrupt
* Add a maintainer's handbook to document KVM x86 processes, preferred coding
style, testing expectations, etc.
* Misc cleanups, fixes and comments
Generic:
* Miscellaneous bugfixes and cleanups
Selftests:
* Generate dependency files so that partial rebuilds work as expected
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"ARM64:
- Eager page splitting optimization for dirty logging, optionally
allowing for a VM to avoid the cost of hugepage splitting in the
stage-2 fault path.
- Arm FF-A proxy for pKVM, allowing a pKVM host to safely interact
with services that live in the Secure world. pKVM intervenes on
FF-A calls to guarantee the host doesn't misuse memory donated to
the hyp or a pKVM guest.
- Support for running the split hypervisor with VHE enabled, known as
'hVHE' mode. This is extremely useful for testing the split
hypervisor on VHE-only systems, and paves the way for new use cases
that depend on having two TTBRs available at EL2.
- Generalized framework for configurable ID registers from userspace.
KVM/arm64 currently prevents arbitrary CPU feature set
configuration from userspace, but the intent is to relax this
limitation and allow userspace to select a feature set consistent
with the CPU.
- Enable the use of Branch Target Identification (FEAT_BTI) in the
hypervisor.
- Use a separate set of pointer authentication keys for the
hypervisor when running in protected mode, as the host is untrusted
at runtime.
- Ensure timer IRQs are consistently released in the init failure
paths.
- Avoid trapping CTR_EL0 on systems with Enhanced Virtualization
Traps (FEAT_EVT), as it is a register commonly read from userspace.
- Erratum workaround for the upcoming AmpereOne part, which has
broken hardware A/D state management.
RISC-V:
- Redirect AMO load/store misaligned traps to KVM guest
- Trap-n-emulate AIA in-kernel irqchip for KVM guest
- Svnapot support for KVM Guest
s390:
- New uvdevice secret API
- CMM selftest and fixes
- fix racy access to target CPU for diag 9c
x86:
- Fix missing/incorrect #GP checks on ENCLS
- Use standard mmu_notifier hooks for handling APIC access page
- Drop now unnecessary TR/TSS load after VM-Exit on AMD
- Print more descriptive information about the status of SEV and
SEV-ES during module load
- Add a test for splitting and reconstituting hugepages during and
after dirty logging
- Add support for CPU pinning in demand paging test
- Add support for AMD PerfMonV2, with a variety of cleanups and minor
fixes included along the way
- Add a "nx_huge_pages=never" option to effectively avoid creating NX
hugepage recovery threads (because nx_huge_pages=off can be toggled
at runtime)
- Move handling of PAT out of MTRR code and dedup SVM+VMX code
- Fix output of PIC poll command emulation when there's an interrupt
- Add a maintainer's handbook to document KVM x86 processes,
preferred coding style, testing expectations, etc.
- Misc cleanups, fixes and comments
Generic:
- Miscellaneous bugfixes and cleanups
Selftests:
- Generate dependency files so that partial rebuilds work as
expected"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (153 commits)
Documentation/process: Add a maintainer handbook for KVM x86
Documentation/process: Add a label for the tip tree handbook's coding style
KVM: arm64: Fix misuse of KVM_ARM_VCPU_POWER_OFF bit index
RISC-V: KVM: Remove unneeded semicolon
RISC-V: KVM: Allow Svnapot extension for Guest/VM
riscv: kvm: define vcpu_sbi_ext_pmu in header
RISC-V: KVM: Expose IMSIC registers as attributes of AIA irqchip
RISC-V: KVM: Add in-kernel virtualization of AIA IMSIC
RISC-V: KVM: Expose APLIC registers as attributes of AIA irqchip
RISC-V: KVM: Add in-kernel emulation of AIA APLIC
RISC-V: KVM: Implement device interface for AIA irqchip
RISC-V: KVM: Skeletal in-kernel AIA irqchip support
RISC-V: KVM: Set kvm_riscv_aia_nr_hgei to zero
RISC-V: KVM: Add APLIC related defines
RISC-V: KVM: Add IMSIC related defines
RISC-V: KVM: Implement guest external interrupt line management
KVM: x86: Remove PRIx* definitions as they are solely for user space
s390/uv: Update query for secret-UVCs
s390/uv: replace scnprintf with sysfs_emit
s390/uvdevice: Add 'Lock Secret Store' UVC
...
Fairly small changes this cycle.
* An additional static inline function when kgdb is not enabled to
reduce boilerplate in arch files.
* kdb will now handle input with linefeeds more like carriage return.
This will make little difference for interactive use but can make
it script to use expect-like interaction with kdb.
* A couple of warning fixes.
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
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Merge tag 'kgdb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux
Pull kgdb updates from Daniel Thompson:
"Fairly small changes this cycle:
- An additional static inline function when kgdb is not enabled to
reduce boilerplate in arch files
- kdb will now handle input with linefeeds more like carriage return.
This will make little difference for interactive use but can make
it script to use expect-like interaction with kdb
- A couple of warning fixes"
* tag 'kgdb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
kdb: move kdb_send_sig() declaration to a better header file
kdb: Handle LF in the command parser
kdb: include kdb_private.h for function prototypes
kgdb: Provide a stub kgdb_nmicallback() if !CONFIG_KGDB
Function do_qc has two main uses: (1) to re-sync the local quota changes
(qd) to the master quotas, and (2) normal quota changes. In the case of
normal quota changes, the change can be positive or negative, as the
quota usage goes up and down.
Before this patch function do_qc was distinguishing one from another by
whether the resulting value is or isn't zero: In the case of a re-sync
(called do_sync) the quota value is moved from the temporary value to a
master value, so the amount is added to one and subtracted from the
other. The problem is that since the values can be positive or negative
we can occasionally run into situations where we are not doing a re-sync
but the quota change just happens to cancel out the previous value.
In the case of a re-sync extra references and locks are taken, and so
do_qc needs to release them. In the case of a normal quota change, no
extra references and locks are taken, so it must not try to release
them.
The problem is: if the quota change is not a re-sync but the value just
happens to cancel out the original quota change, the resulting zero
value fools do_qc into thinking this is a re-sync and therefore it must
release the extra references. This results in problems, mainly having to
do with slot reference numbers going smaller than zero.
This patch introduces new constants, QC_SYNC and QC_CHANGE so do_qc can
really tell the difference. For QC_SYNC calls it must release the extra
references acquired by gfs2_quota_unlock's call to qd_check_sync. For
QC_CHANGE calls it does not have extra references to put.
Note that this allows quota changes back to a value of zero, and so I
removed an assert warning related to that.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Replace kmap_local_page() + memcpy() + kunmap_local() sequences with
memcpy_{from,to}_page() where we are not doing anything else with the
mapped page.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Replace the remaining instances of kmap_atomic() ... kunmap_atomic()
with kmap_local_page() ... kunmap_local().
In gfs2_write_buf_to_page(), we can call flush_dcache_page() after
unmapping the page.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
kmap_atomic() is deprecated in favor of kmap_local_{folio,page}().
Therefore, replace kmap_atomic() with kmap_local_page() in
gfs2_internal_read() and stuffed_readpage().
kmap_atomic() disables page-faults and preemption (the latter only for
!PREEMPT_RT kernels), However, the code within the mapping/un-mapping in
gfs2_internal_read() and stuffed_readpage() does not depend on the
above-mentioned side effects.
Therefore, a mere replacement of the old API with the new one is all that
is required (i.e., there is no need to explicitly add any calls to
pagefault_disable() and/or preempt_disable()).
Signed-off-by: Deepak R Varma <drv@mailo.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Commit 27a2660f1e ("gfs2: Dump nrpages for inodes and their glocks")
added some locking around reading inode->i_data.nrpages. That locking
doesn't do anything really, so get rid of it.
With that, the glock argument to ->go_dump() can be made const again as
well.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
All the remaining users of gfs2_freeze_lock_shared() set freeze_gh to
&sdp->sd_freeze_gh and flags to 0, so remove those two parameters.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Replace sd_freeze_state with a new SDF_FROZEN flag.
There no longer is a need for indicating that a freeze is in progress
(SDF_STARTING_FREEZE); we are now protecting the critical sections with
the sd_freeze_mutex.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
So far, at mount time, gfs2 would take the freeze glock in shared mode
and then immediately drop it again, turning it into a cached glock that
can be reclaimed at any time. To freeze the filesystem cluster-wide,
the node initiating the freeze would take the freeze glock in exclusive
mode, which would cause the freeze glock's freeze_go_sync() callback to
run on each node. There, gfs2 would freeze the filesystem and schedule
gfs2_freeze_func() to run. gfs2_freeze_func() would re-acquire the
freeze glock in shared mode, thaw the filesystem, and drop the freeze
glock again. The initiating node would keep the freeze glock held in
exclusive mode. To thaw the filesystem, the initiating node would drop
the freeze glock again, which would allow gfs2_freeze_func() to resume
on all nodes, leaving the filesystem in the thawed state.
It turns out that in freeze_go_sync(), we cannot reliably and safely
freeze the filesystem. This is primarily because the final unmount of a
filesystem takes a write lock on the s_umount rw semaphore before
calling into gfs2_put_super(), and freeze_go_sync() needs to call
freeze_super() which also takes a write lock on the same semaphore,
causing a deadlock. We could work around this by trying to take an
active reference on the super block first, which would prevent unmount
from running at the same time. But that can fail, and freeze_go_sync()
isn't actually allowed to fail.
To get around this, this patch changes the freeze glock locking scheme
as follows:
At mount time, each node takes the freeze glock in shared mode. To
freeze a filesystem, the initiating node first freezes the filesystem
locally and then drops and re-acquires the freeze glock in exclusive
mode. All other nodes notice that there is contention on the freeze
glock in their go_callback callbacks, and they schedule
gfs2_freeze_func() to run. There, they freeze the filesystem locally
and drop and re-acquire the freeze glock before re-thawing the
filesystem. This is happening outside of the glock state engine, so
there, we are allowed to fail.
From a cluster point of view, taking and immediately dropping a glock is
indistinguishable from taking the glock and only dropping it upon
contention, so this new scheme is compatible with the old one.
Thanks to Li Dong <lidong@vivo.com> for reporting a locking bug in
gfs2_freeze_func() in a previous version of this commit.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Here is the big set of USB and Thunderbolt driver updates for 6.5-rc1.
Included in here are:
- Lots of USB4/Thunderbolt additions and updates for new hardware
types and fixes as people are starting to get access to the hardware
in the wild
- new gadget controller driver, cdns2, added
- new typec drivers added
- xhci driver updates
- typec driver updates
- usbip driver fixes
- usb-serial driver updates and fixes
- lots of smaller USB driver updates
All of these have been in linux-next for a while with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt driver updates from Greg KH:
"Here is the big set of USB and Thunderbolt driver updates for 6.5-rc1.
Included in here are:
- Lots of USB4/Thunderbolt additions and updates for new hardware
types and fixes as people are starting to get access to the
hardware in the wild
- new gadget controller driver, cdns2, added
- new typec drivers added
- xhci driver updates
- typec driver updates
- usbip driver fixes
- usb-serial driver updates and fixes
- lots of smaller USB driver updates
All of these have been in linux-next for a while with no reported
problems"
* tag 'usb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (265 commits)
usb: host: xhci-plat: Set XHCI_STATE_REMOVING before resuming XHCI HC
usb: host: xhci: Do not re-initialize the XHCI HC if being removed
usb: typec: nb7vpq904m: fix CONFIG_DRM dependency
usbip: usbip_host: Replace strlcpy with strscpy
usb: dwc3: gadget: Propagate core init errors to UDC during pullup
USB: serial: option: add LARA-R6 01B PIDs
usb: ulpi: Make container_of() no-op in to_ulpi_dev()
usb: gadget: legacy: fix error return code in gfs_bind
usb: typec: fsa4480: add support for Audio Accessory Mode
usb: typec: fsa4480: rework mux & switch setup to handle more states
usb: typec: ucsi: call typec_set_mode on non-altmode partner change
USB: gadget: f_hid: make hidg_class a static const structure
USB: gadget: f_printer: make usb_gadget_class a static const structure
USB: mon: make mon_bin_class a static const structure
USB: gadget: udc: core: make udc_class a static const structure
USB: roles: make role_class a static const structure
dt-bindings: usb: dwc3: Add interrupt-names property support for wakeup interrupt
dt-bindings: usb: Add StarFive JH7110 USB controller
dt-bindings: usb: dwc3: Add IPQ9574 compatible
usb: cdns2: Fix spelling mistake in a trace message "Wakupe" -> "Wakeup"
...
The .adjphase operation is an operation that is implemented only by certain
PHCs. The sysfs device attribute node for querying the maximum phase
adjustment supported should not be exposed on devices that do not support
.adjphase.
Fixes: c3b60ab7a4 ("ptp: Add .getmaxphase callback to ptp_clock_info")
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reported-by: Nathan Chancellor <nathan@kernel.org>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Link: https://lore.kernel.org/netdev/20230627162146.GA114473@dev-arch.thelio-3990X/
Link: https://lore.kernel.org/all/CA+G9fYtKCZeAUTtwe69iK8Xcz1mOKQzwcy49wd+imZrfj6ifXA@mail.gmail.com/
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Message-ID: <20230627232139.213130-1-rrameshbabu@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Here is the big set of tty/serial driver updates for 6.5-rc1.
Included in here are:
- tty_audit code cleanups from Jiri
- more 8250 cleanups from Ilpo
- samsung_tty driver bugfixes
- 8250 lock port updates
- usual fsl_lpuart driver updates and fixes
- other small serial driver fixes and updates, full details in the
shortlog.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here is the big set of tty/serial driver updates for 6.5-rc1.
Included in here are:
- tty_audit code cleanups from Jiri
- more 8250 cleanups from Ilpo
- samsung_tty driver bugfixes
- 8250 lock port updates
- usual fsl_lpuart driver updates and fixes
- other small serial driver fixes and updates, full details in the
shortlog
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (58 commits)
tty_audit: make data of tty_audit_log() const
tty_audit: make tty pointers in exposed functions const
tty_audit: make icanon a bool
tty_audit: invert the condition in tty_audit_log()
tty_audit: use kzalloc() in tty_audit_buf_alloc()
tty_audit: use TASK_COMM_LEN for task comm
Revert "8250: add support for ASIX devices with a FIFO bug"
serial: atmel: don't enable IRQs prematurely
tty: serial: Add Nuvoton ma35d1 serial driver support
tty: serial: fsl_lpuart: add earlycon for imx8ulp platform
tty: serial: imx: fix rs485 rx after tx
selftests: tty: add selftest for tty timestamp updates
tty: tty_io: update timestamps on all device nodes
tty: fix hang on tty device with no_room set
serial: core: fix -EPROBE_DEFER handling in init
serial: 8250_omap: Use force_suspend and resume for system suspend
tty: serial: samsung_tty: Use abs() to simplify some code
tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() when iterating clk
tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error
serial: 8250: Apply FSL workarounds also without SERIAL_8250_CONSOLE
...
Here is a set of staging driver updates for 6.5-rc1. It's a small
update this merge window, nothing major at all, overall just under 1000
lines of code removed, not a huge churn.
Nothing major to highlight here either, just lots of small coding style
fixes.
All of these have been in linux-next for a while with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver updates from Greg KH:
"Here is a set of staging driver updates for 6.5-rc1. It's a small
update this merge window, nothing major at all, overall just under
1000 lines of code removed, not a huge churn.
Nothing major to highlight here either, just lots of small coding
style fixes.
All of these have been in linux-next for a while with no reported
problems"
* tag 'staging-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (62 commits)
staging: rtl8192e: Remove whitespace and blank lines
staging: rtl8192e: remove 5G related code
staging: rtl8192e: remove comparison to true
staging: rtl8192e: remove return statement from void function
staging: rtl8192e: convert else if sequence to switch
staging: rtl8192e: clean up brace coding style issues
staging: rtl8723bs: Fix blank line issues
staging: rtl8723bs: Fix block comment issue
staging: rtl8723bs: Fix indentation issues
staging: vchiq_arm: Remove extra struct vchiq_instance declaration
staging: rtl8192e: Rename variable InitialGainHandler
staging: rtl8192e: Rename variable LeisurePSLeave
staging: rtl8192e: Rename variable SetBWModeHandler
staging: rtl8192e: Rename variable SetWirelessMode
staging: rtl8192e: Rename RTLLIB_LINKED_SCANNING
staging: rtl8192e: Rename RTLLIB_LINKED to MAC80211_LINKED
staging: rtl8192e: Rename RTLLIB_NOLINK to MAC80211_NOLINK
staging: rtl8192e: Rename state to link_state
staging: rtl8192e: Rename rtllib_state to rtl_link_state
staging: rtl8192e: Remove unused enum led_ctl_mode
...
Here are a small set of changes for 6.5-rc1 for some driver core
changes. Included in here are:
- device property cleanups to make it easier to write "agnostic"
drivers when regards to the firmware layer underneath them (DT vs.
ACPI)
- debugfs documentation updates
- devres additions
- sysfs documentation and changes to handle empty directory creation
logic better
- tiny kernfs optimizations
- other tiny changes
All of these have been in linux-next for a while with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here are a small set of changes for 6.5-rc1 for some driver core
changes. Included in here are:
- device property cleanups to make it easier to write "agnostic"
drivers when regards to the firmware layer underneath them (DT vs.
ACPI)
- debugfs documentation updates
- devres additions
- sysfs documentation and changes to handle empty directory creation
logic better
- tiny kernfs optimizations
- other tiny changes
All of these have been in linux-next for a while with no reported
problems"
* tag 'driver-core-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
sysfs: Skip empty folders creation
sysfs: Improve readability by following the kernel coding style
drivers: fwnode: fix fwnode_irq_get[_byname]()
ata: ahci_platform: Make code agnostic to OF/ACPI
device property: Implement device_is_compatible()
ACPI: Move ACPI_DEVICE_CLASS() to mod_devicetable.h
base/node: Use 'property' to identify an access parameter
driver core: device.h: add some missing kerneldocs
kernfs: fix missing kernfs_idr_lock to remove an ID from the IDR
isa: Remove unnecessary checks
MAINTAINERS: add entry for auxiliary bus
debugfs: Correct the 'debugfs_create_str' docs
serial: qcom_geni: Comment use of devm_krealloc rather than devm_krealloc_array
iio: adc: Use devm_krealloc_array
hwmon: pmbus: Use devm_krealloc_array
This reverts commit a9dc8d0442.
The standard for KUnit is to not build tests at all when required
functionality is missing, rather than doing test "skip". Restore this
for the fortify tests, so that architectures without
CONFIG_ARCH_HAS_FORTIFY_SOURCE do not emit unsolvable warnings.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Closes: https://lore.kernel.org/all/CAMuHMdUrxOEroHVUt7-mAnKSBjY=a-D3jr+XiAifuwv06Ob9Pw@mail.gmail.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Here is the big set of char/misc and other driver subsystem updates for
6.5-rc1.
Lots of different, tiny, stuff in here, from a range of smaller driver
subsystems, including pulls from some substems directly:
- IIO driver updates and additions
- W1 driver updates and fixes (and a new maintainer!)
- FPGA driver updates and fixes
- Counter driver updates
- Extcon driver updates
- Interconnect driver updates
- Coresight driver updates
- mfd tree tag merge needed for other updates
on top of that, lots of small driver updates as patches, including:
- static const updates for class structures
- nvmem driver updates
- pcmcia driver fix
- lots of other small driver updates and fixes
All of these have been in linux-next for a while with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull Char/Misc updates from Greg KH:
"Here is the big set of char/misc and other driver subsystem updates
for 6.5-rc1.
Lots of different, tiny, stuff in here, from a range of smaller driver
subsystems, including pulls from some substems directly:
- IIO driver updates and additions
- W1 driver updates and fixes (and a new maintainer!)
- FPGA driver updates and fixes
- Counter driver updates
- Extcon driver updates
- Interconnect driver updates
- Coresight driver updates
- mfd tree tag merge needed for other updates on top of that, lots of
small driver updates as patches, including:
- static const updates for class structures
- nvmem driver updates
- pcmcia driver fix
- lots of other small driver updates and fixes
All of these have been in linux-next for a while with no reported
problems"
* tag 'char-misc-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (243 commits)
bsr: fix build problem with bsr_class static cleanup
comedi: make all 'class' structures const
char: xillybus: make xillybus_class a static const structure
xilinx_hwicap: make icap_class a static const structure
virtio_console: make port class a static const structure
ppdev: make ppdev_class a static const structure
char: misc: make misc_class a static const structure
/dev/mem: make mem_class a static const structure
char: lp: make lp_class a static const structure
dsp56k: make dsp56k_class a static const structure
bsr: make bsr_class a static const structure
oradax: make 'cl' a static const structure
hwtracing: hisi_ptt: Fix potential sleep in atomic context
hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU
hwtracing: hisi_ptt: Export available filters through sysfs
hwtracing: hisi_ptt: Add support for dynamically updating the filter list
hwtracing: hisi_ptt: Factor out filter allocation and release operation
samples: pfsm: add CC_CAN_LINK dependency
misc: fastrpc: check return value of devm_kasprintf()
coresight: dummy: Update type of mode parameter in dummy_{sink,source}_enable()
...
- Add lots of Device Tree bindings / support
- Turn off LED strings when display is blank
- Switch I2C drivers from .probe_new() to .probe()
- Remove superfluous NULL checks
- Only obtain PWM information once and do it in .probe()
- Fix-ups
- Ensure locks are obtained and held when required
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Merge tag 'backlight-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"New Functionality:
- Add lots of Device Tree bindings / support
- Turn off LED strings when display is blank
- Switch I2C drivers from .probe_new() to .probe()
- Remove superfluous NULL checks
- Only obtain PWM information once and do it in .probe()
Fix-ups:
- Ensure locks are obtained and held when required"
* tag 'backlight-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: led_bl: Take led_access lock when required
video: backlight: lp855x: Get PWM for PWM mode during probe
dt-bindings: backlight: lp855x: Convert to YAML and modernize
dt-bindings: backlight: pwm: Make power-supply not required
backlight: pwm_bl: Remove unneeded checks for valid GPIOs
backlight: Switch i2c drivers back to use .probe()
backlight: lm3630a: Turn off both led strings when display is blank
dt-bindings: leds: backlight: ktz8866: Add reg property and update example
- Add support for Intel Cherry Trail Whiskey Cove PMIC LEDs
- Add support for Awinic AW20036/AW20054/AW20072 LEDs
- New Device Support
- Add support for PMI632 LPG to QCom LPG
- Add support for PMI8998 to QCom Flash
- Add support for MT6331, WLEDs and MT6332 to Mediatek MT6323 PMIC
- New Functionality
- Implement the LP55xx Charge Pump
- Add support for suspend / resume to Intel Cherry Trail Whiskey Cove PMIC
- Add support for breathing mode to Intel Cherry Trail Whiskey Cove PMIC
- Enable per-pin resolution Pinctrl in LEDs GPIO
- Fix-ups
- Allow thread to sleep by switching from spinlock to mutex
- Add lots of Device Tree bindings / support
- Adapt relationships / dependencies driven by Kconfig
- Switch I2C drivers from .probe_new() to .probe()
- Remove superfluous / duplicate code
- Replace strlcpy() with strscpy() for efficiency and overflow prevention
- Staticify various functions
- Trivial: Fixing coding style
- Simplify / reduce code
- Bug Fixes
- Prevent NETDEV_LED_MODE_LINKUP from being cleared on rename
- Repair race between led_set_brightness(LED_{OFF,FULL})
- Fix Oops relating to sleeping in critical sections
- Clear LED_INIT_DEFAULT_TRIGGER flag when clearing the current trigger
- Do not leak resources in error handling paths
- Fix unsigned comparison which can never be negative
- Provide missing NULL terminating entries in tables
- Fix misnaming issues
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Merge tag 'leds-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds
Pull LED updates from Lee Jones:
"New Drivers:
- Add support for Intel Cherry Trail Whiskey Cove PMIC LEDs
- Add support for Awinic AW20036/AW20054/AW20072 LEDs
New Device Support:
- Add support for PMI632 LPG to QCom LPG
- Add support for PMI8998 to QCom Flash
- Add support for MT6331, WLEDs and MT6332 to Mediatek MT6323 PMIC
New Functionality:
- Implement the LP55xx Charge Pump
- Add support for suspend / resume to Intel Cherry Trail Whiskey Cove PMIC
- Add support for breathing mode to Intel Cherry Trail Whiskey Cove PMIC
- Enable per-pin resolution Pinctrl in LEDs GPIO
Fix-ups:
- Allow thread to sleep by switching from spinlock to mutex
- Add lots of Device Tree bindings / support
- Adapt relationships / dependencies driven by Kconfig
- Switch I2C drivers from .probe_new() to .probe()
- Remove superfluous / duplicate code
- Replace strlcpy() with strscpy() for efficiency and overflow prevention
- Staticify various functions
- Trivial: Fixing coding style
- Simplify / reduce code
Bug Fixes:
- Prevent NETDEV_LED_MODE_LINKUP from being cleared on rename
- Repair race between led_set_brightness(LED_{OFF,FULL})
- Fix Oops relating to sleeping in critical sections
- Clear LED_INIT_DEFAULT_TRIGGER flag when clearing the current trigger
- Do not leak resources in error handling paths
- Fix unsigned comparison which can never be negative
- Provide missing NULL terminating entries in tables
- Fix misnaming issues"
* tag 'leds-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (53 commits)
leds: leds-mt6323: Adjust return/parameter types in wled get/set callbacks
leds: sgm3140: Add richtek,rt5033-led compatible
dt-bindings: leds: sgm3140: Document richtek,rt5033 compatible
dt-bindings: backlight: kinetic,ktz8866: Add missing type for "current-num-sinks"
dt-bindings: leds: Drop unneeded quotes
leds: Fix config reference for AW200xx driver
leds: leds-mt6323: Add support for WLEDs and MT6332
leds: leds-mt6323: Add support for MT6331 leds
leds: leds-mt6323: Open code and drop MT6323_CAL_HW_DUTY macro
leds: leds-mt6323: Drop MT6323_ prefix from macros and defines
leds: leds-mt6323: Specify registers and specs in platform data
dt-bindings: leds: leds-mt6323: Document mt6332 compatible
dt-bindings: leds: leds-mt6323: Document mt6331 compatible
leds: simatic-ipc-leds-gpio: Introduce more Kconfig switches
leds: simatic-ipc-leds-gpio: Split up into multiple drivers
leds: simatic-ipc-leds-gpio: Move two extra gpio pins into another table
leds: simatic-ipc-leds-gpio: Add terminating entries to gpio tables
leds: flash: leds-qcom-flash: Fix an unsigned comparison which can never be negative
leds: cht-wcove: Remove unneeded semicolon
leds: cht-wcove: Fix an unsigned comparison which can never be negative
...
- Add support for TI TPS6594/TPS6593/LP8764 PMICs
- Add support for Samsung RT5033 Battery Charger
- Add support for Analog Devices MAX77540 and MAX77541 PMICs
- New Device Support
- Add support for SPI to Rockchip RK808 (and friends)
- Add support for AXP192 PMIC to X-Powers AXP20X
- Add support for AXP313a PMIC to X-Powers AXP20X
- Add support for RK806 to Rockchip RK8XX
- Removed Device Support
- Removed MFD support for Richtek RT5033 Battery
- Fix-ups
- Remove superfluous code
- Switch I2C drivers from .probe_new() to .probe()
- Convert over to managed resources (devm_*(), etc)
- Use dev_err_probe() for returning errors from .probe()
- Add lots of Device Tree bindings / support
- Improve cache efficiency by switching to Maple
- Use own exported namespaces (NS)
- Include missing and remove superfluous headers
- Start using / convert to the new shutdown sys-off API
- Trivial: variable / define renaming
- Make use of of_property_read_reg() when requesting DT 'reg's
- Bug Fixes
- Fix chip revision readout due to incorrect data masking
- Amend incorrect register and mask values used for charger state
- Hide unused functionality at compile time
- Fix resource leaks following error handling routines
- Return correct error values and fix error handling in general
- Repair incorrect device names - used for device matching
- Remedy broken module auto-loading
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Merge tag 'mfd-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Drivers:
- Add support for TI TPS6594/TPS6593/LP8764 PMICs
- Add support for Samsung RT5033 Battery Charger
- Add support for Analog Devices MAX77540 and MAX77541 PMICs
New Device Support:
- Add support for SPI to Rockchip RK808 (and friends)
- Add support for AXP192 PMIC to X-Powers AXP20X
- Add support for AXP313a PMIC to X-Powers AXP20X
- Add support for RK806 to Rockchip RK8XX
Removed Device Support:
- Removed MFD support for Richtek RT5033 Battery
Fix-ups:
- Remove superfluous code
- Switch I2C drivers from .probe_new() to .probe()
- Convert over to managed resources (devm_*(), etc)
- Use dev_err_probe() for returning errors from .probe()
- Add lots of Device Tree bindings / support
- Improve cache efficiency by switching to Maple
- Use own exported namespaces (NS)
- Include missing and remove superfluous headers
- Start using / convert to the new shutdown sys-off API
- Trivial: variable / define renaming
- Make use of of_property_read_reg() when requesting DT 'reg's
Bug Fixes:
- Fix chip revision readout due to incorrect data masking
- Amend incorrect register and mask values used for charger state
- Hide unused functionality at compile time
- Fix resource leaks following error handling routines
- Return correct error values and fix error handling in general
- Repair incorrect device names - used for device matching
- Remedy broken module auto-loading"
* tag 'mfd-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (51 commits)
dt-bindings: mfd: max77541: Add ADI MAX77541/MAX77540
iio: adc: max77541: Add ADI MAX77541 ADC Support
regulator: max77541: Add ADI MAX77541/MAX77540 Regulator Support
dt-bindings: regulator: max77541: Add ADI MAX77541/MAX77540 Regulator
mfd: Switch two more drivers back to use struct i2c_driver::probe
dt-bindings: mfd: samsung,s5m8767: Simplify excluding properties
mfd: stmpe: Only disable the regulators if they are enabled
mfd: max77541: Add ADI MAX77541/MAX77540 PMIC Support
dt-bindings: mfd: gateworks-gsc: Remove unnecessary fan-controller nodes
mfd: core: Use of_property_read_reg() to parse "reg"
mfd: stmfx: Nullify stmfx->vdd in case of error
mfd: stmfx: Fix error path in stmfx_chip_init
mfd: intel-lpss: Add missing check for platform_get_resource
mfd: stpmic1: Add PMIC poweroff via sys-off handler
mfd: stpmic1: Fixup main control register and bits naming
dt-bindings: mfd: qcom,tcsr: Add the compatible for IPQ8074
mfd: tps65219: Add support for soft shutdown via sys-off API
mfd: pm8008: Drop bogus i2c module alias
mfd: pm8008: Fix module autoloading
mfd: tps65219: Add GPIO cell instance
...
broadcom: convert bcm2835 bindings from txt to yaml bcm2835
qcom: support for IPQ5018
ti: always zero TX data fields
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Merge tag 'mailbox-v6.5' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
- tegra: support for Tegra264
- broadcom: convert bcm2835 bindings from txt to yaml bcm2835
- qcom: support for IPQ5018
- ti: always zero TX data fields
* tag 'mailbox-v6.5' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
mailbox: ti-msgmgr: Fill non-message tx data fields with 0x0
mailbox: tegra: add support for Tegra264
dt-bindings: mailbox: tegra: Document Tegra264 HSP
dt-bindings: mailbox: convert bcm2835-mbox bindings to YAML
dt-bindings: mailbox: qcom: Add IPQ5018 APCS compatible
Subsystem:
- Switch i2c drivers back to use .probe()
- Constify pointers to hwmon_channel_info
New driver:
- Loongson on chip RTC, replacing the Loongson 1 only driver
Drivers:
- isl1208: cleanup and support for RAA215300
- st-lpc: cleanups
- stm32: fix wakeup
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Merge tag 'rtc-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"The isl1208 dirver was reworked tobe able to work as part of an MFD.
All the Loongson chips are now supported through a new driver, the old
one is removed.
Summary:
Subsystem:
- Switch i2c drivers back to use .probe()
- Constify pointers to hwmon_channel_info
New driver:
- Loongson on chip RTC, replacing the Loongson 1 only driver
Drivers:
- isl1208: cleanup and support for RAA215300
- st-lpc: cleanups
- stm32: fix wakeup"
* tag 'rtc-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (21 commits)
rtc: Add rtc driver for the Loongson family chips
rtc: Remove the Loongson-1 RTC driver
dt-bindings: rtc: Split loongson,ls2x-rtc into SoC-based compatibles
rtc: rv3028: make rv3028 probeable from userspace
rtc: isl1208: Add support for the built-in RTC on the PMIC RAA215300
rtc: isl1208: Add isl1208_set_xtoscb()
rtc: isl1208: Drop enum isl1208_id and split isl1208_configs[]
rtc: isl1208: Make similar I2C and DT-based matching table
rtc: isl1208: Drop name variable
dt-bindings: rtc: isil,isl1208: Document clock and clock-names properties
dt-bindings: rtc: isl1208: Convert to json-schema
rtc: st-lpc: Simplify clk handling in st_rtc_probe()
rtc: st-lpc: Release some resources in st_rtc_probe() in case of error
rtc: stm32: remove dedicated wakeup management
dt-bindings: rtc: restrict node name suffixes
rtc: add HAS_IOPORT dependencies
rtc: Switch i2c drivers back to use .probe()
rtc: rv3032: constify pointers to hwmon_channel_info
rtc: isl12022: constify pointers to hwmon_channel_info
rtc: ds3232: constify pointers to hwmon_channel_info
...
Commit 408579cd62 ("mm: Update do_vmi_align_munmap() return
semantics") made the return value and locking semantics of
do_vmi_align_munmap() more straightforward, but in the process it ended
up unlocking the mmap lock just a tad too early: the debug code doing
the mmap layout validation still needs to run with the lock held, or
things might change under it while it's trying to validate things.
So just move the unlocking to after the validate_mm() call.
Reported-by: kernel test robot <oliver.sang@intel.com>
Link: https://lore.kernel.org/lkml/ZKIsoMOT71uwCIZX@xsang-OptiPlex-9020/
Fixes: 408579cd62 ("mm: Update do_vmi_align_munmap() return semantics")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We do not want to add prototypes for all parisc specific syscalls, so
simply drop such warnings when building the kernel.
Signed-off-by: Helge Deller <deller@gmx.de>
The math-emu code is a snapshot from the HP-UX kernel. They've
been modified as little as possible.
See arch/parisc/math-emu/README.
Signed-off-by: Helge Deller <deller@gmx.de>
Raise the minimum gcc version for parisc64 to 12.0.0 (for __int128 type)
and keep 5.1.0 as minimum for 32-bit parisc target.
Fixes: 8664645ade ("parisc: Raise minimal GCC version")
Signed-off-by: Helge Deller <deller@gmx.de>
While our user stacks can grow either down (all common architectures) or
up (parisc and the ia64 register stack), the initial stack setup when we
copy the argument and environment strings to the new stack at execve()
time is always done by extending the stack downwards.
But it turns out that in commit 8d7071af89 ("mm: always expand the
stack with the mmap write lock held"), as part of making the stack
growing code more robust, 'expand_downwards()' was now made to actually
check the vma flags:
if (!(vma->vm_flags & VM_GROWSDOWN))
return -EFAULT;
and that meant that this execve-time stack expansion started failing on
parisc, because on that architecture, the stack flags do not contain the
VM_GROWSDOWN bit.
At the same time the new check in expand_downwards() is clearly correct,
and simplified the callers, so let's not remove it.
The solution is instead to just codify the fact that yes, during
execve(), the stack grows down. This not only matches reality, it ends
up being particularly simple: we already have special execve-time flags
for the stack (VM_STACK_INCOMPLETE_SETUP) and use those flags to avoid
page migration during this setup time (see vma_is_temporary_stack() and
invalid_migration_vma()).
So just add VM_GROWSDOWN to that set of temporary flags, and now our
stack flags automatically match reality, and the parisc stack expansion
works again.
Note that the VM_STACK_INCOMPLETE_SETUP bits will be cleared when the
stack is finalized, so we only add the extra VM_GROWSDOWN bit on
CONFIG_STACK_GROWSUP architectures (ie parisc) rather than adding it in
general.
Link: https://lore.kernel.org/all/612eaa53-6904-6e16-67fc-394f4faa0e16@bell.net/
Link: https://lore.kernel.org/all/5fd98a09-4792-1433-752d-029ae3545168@gmx.de/
Fixes: 8d7071af89 ("mm: always expand the stack with the mmap write lock held")
Reported-by: John David Anglin <dave.anglin@bell.net>
Reported-and-tested-by: Helge Deller <deller@gmx.de>
Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
./fs/xfs/xfs_extfree_item.c:723:3-4: Unneeded semicolon
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5728
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Similar to the recent patch strengthening the AGF agf_length
verification, the AGI verifier does not check that the AGI length field
is within known good bounds. This isn't currently checked by runtime
kernel code, yet we assume in many places that it is correct and verify
other metadata against it.
Add length verification to the AGI verifier. Just like the AGF length
checking, the length of the AGI must be equal to the size of the AG
specified in the superblock, unless it is the last AG in the filesystem.
In that case, it must be less than or equal to sb->sb_agblocks and
greater than XFS_MIN_AG_BLOCKS, which is the smallest AG a growfs
operation will allow to exist.
There's only one place in the filesystem that actually uses agi_length,
but let's not leave it vulnerable to the same weird nonsense that
generates syzbot bugs, eh?
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
__register_btf_kfunc_id_set() assumes .BTF to be part of the module's .ko
file if CONFIG_DEBUG_INFO_BTF is enabled. If that's not the case, the
function prints an error message and return an error. As a result, such
modules cannot be loaded.
However, the section could be stripped out during a build process. It would
be better to let the modules loaded, because their basic functionalities
have no problem [0], though the BTF functionalities will not be supported.
Make the function to lower the level of the message from error to warn, and
return no error.
[0] https://lore.kernel.org/bpf/20220219082037.ow2kbq5brktf4f2u@apollo.legion
Fixes: c446fdacb1 ("bpf: fix register_btf_kfunc_id_set for !CONFIG_DEBUG_INFO_BTF")
Reported-by: Alexander Egorenkov <Alexander.Egorenkov@ibm.com>
Suggested-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/87y228q66f.fsf@oc8242746057.ibm.com
Link: https://lore.kernel.org/bpf/20220219082037.ow2kbq5brktf4f2u@apollo.legion
Link: https://lore.kernel.org/bpf/20230701171447.56464-1-sj@kernel.org
The parameter name in the function declaration and definition
should be the same.
drivers/vhost/vhost.h,
int vhost_get_vq_desc(..., unsigned int iov_count,...);
drivers/vhost/vhost.c,
int vhost_get_vq_desc(..., unsigned int iov_size,...)
Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
Message-Id: <20230621093835.36878-1-xianting.tian@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch drops the requirement that we can only switch workers if work
has not been queued by using RCU for the vq based queueing paths and a
mutex for the device wide flush.
We can also use this to support SIGKILL properly in the future where we
should exit almost immediately after getting that signal. With this
patch, when get_signal returns true, we can set the vq->worker to NULL
and do a synchronize_rcu to prevent new work from being queued to the
vhost_task that has been killed.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-18-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This has vhost-scsi support the worker ioctls by calling the
vhost_worker_ioctl helper.
With a single worker, the single thread becomes a bottlneck when trying
to use 3 or more virtqueues like:
fio --filename=/dev/sdb --direct=1 --rw=randrw --bs=4k \
--ioengine=libaio --iodepth=128 --numjobs=3
With the patches and doing a worker per vq, we can scale to at least
16 vCPUs/vqs (that's my system limit) with the same command fio command
above with numjobs=16:
fio --filename=/dev/sdb --direct=1 --rw=randrw --bs=4k \
--ioengine=libaio --iodepth=64 --numjobs=16
which gives around 2002K IOPs.
Note that for testing I dropped depth to 64 above because the vhost/virt
layer supports only 1024 total commands per device. And the only tuning I
did was set LIO's emulate_pr to 0 to avoid LIO's PR lock in the main IO
path which becomes an issue at around 12 jobs/virtqueues.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-17-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
For vhost-scsi with 3 vqs or more and a workload that tries to use
them in parallel like:
fio --filename=/dev/sdb --direct=1 --rw=randrw --bs=4k \
--ioengine=libaio --iodepth=128 --numjobs=3
the single vhost worker thread will become a bottlneck and we are stuck
at around 500K IOPs no matter how many jobs, virtqueues, and CPUs are
used.
To better utilize virtqueues and available CPUs, this patch allows
userspace to create workers and bind them to vqs. You can have N workers
per dev and also share N workers with M vqs on that dev.
This patch adds the interface related code and the next patch will hook
vhost-scsi into it. The patches do not try to hook net and vsock into
the interface because:
1. multiple workers don't seem to help vsock. The problem is that with
only 2 virtqueues we never fully use the existing worker when doing
bidirectional tests. This seems to match vhost-scsi where we don't see
the worker as a bottleneck until 3 virtqueues are used.
2. net already has a way to use multiple workers.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-16-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The next patch allows userspace to create multiple workers per device,
so this patch replaces the vhost_worker pointer with an xarray so we
can store mupltiple workers and look them up.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-15-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The next patches add new vhost worker ioctls which will need to get a
vhost_virtqueue from a userspace struct which specifies the vq's index.
This moves the vhost_vring_ioctl code to do this to a helper so it can
be shared.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-14-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
vhost_work_queue is no longer used. Each driver is using the poll or vq
based queueing, so remove vhost_work_queue.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-13-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
With one worker we will always send the scsi cmd responses then send the
TMF rsp, because LIO will always complete the scsi cmds first then call
into us to send the TMF response.
With multiple workers, the IO vq workers could be running while the
TMF/ctl vq worker is running so this has us do a flush before completing
the TMF to make sure cmds are completed when it's work is later queued
and run.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-12-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Convert from vhost_work_queue to vhost_vq_work_queue so we can
remove vhost_work_queue.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-11-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch separates the scsi cmd completion code paths so we can complete
cmds based on their vq instead of having all cmds complete on the same
worker/CPU. This will be useful with the next patches that allow us to
create mulitple worker threads and bind them to different vqs, and we can
have completions running on different threads/CPUs.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230626232307.97930-10-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Convert from vhost_work_queue to vhost_vq_work_queue, so we can drop
vhost_work_queue.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-9-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This has the drivers pass in their poll to vq mapping and then converts
the core poll code to use the vq based helpers. In the next patches we
will allow vqs to be handled by different workers, so to allow drivers
to execute operations like queue, stop, flush, etc on specific polls/vqs
we need to know the mappings.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-8-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch has the core work flush function take a worker. When we
support multiple workers we can then flush each worker during device
removal, stoppage, etc. It also adds a helper to flush specific
virtqueues, so vhost-scsi can flush IO vqs from it's ctl vq.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-7-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch has the core work queueing function take a worker for when we
support multiple workers. It also adds a helper that takes a vq during
queueing so modules can control which vq/worker to queue work on.
This temp leaves vhost_work_queue. It will be removed when the drivers
are converted in the next patches.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230626232307.97930-6-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
