Pull ext4 updates from Ted Ts'o:
"Many cleanups and bug fixes in ext4, especially for the fast commit
feature.
Also some performance improvements; in particular, improving IOPS and
throughput on fast devices running Async Direct I/O by up to 20% by
optimizing jbd2_transaction_committed()"
* tag 'ext4_for_linus-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (40 commits)
ext4: make sure the first directory block is not a hole
ext4: check dot and dotdot of dx_root before making dir indexed
ext4: sanity check for NULL pointer after ext4_force_shutdown
jbd2: increase maximum transaction size
jbd2: drop pointless shrinker batch initialization
jbd2: avoid infinite transaction commit loop
jbd2: precompute number of transaction descriptor blocks
jbd2: make jbd2_journal_get_max_txn_bufs() internal
jbd2: avoid mount failed when commit block is partial submitted
ext4: avoid writing unitialized memory to disk in EA inodes
ext4: don't track ranges in fast_commit if inode has inlined data
ext4: fix possible tid_t sequence overflows
ext4: use ext4_update_inode_fsync_trans() helper in inode creation
ext4: add missing MODULE_DESCRIPTION()
jbd2: add missing MODULE_DESCRIPTION()
ext4: use memtostr_pad() for s_volume_name
jbd2: speed up jbd2_transaction_committed()
ext4: make ext4_da_map_blocks() buffer_head unaware
ext4: make ext4_insert_delayed_block() insert multi-blocks
ext4: factor out a helper to check the cluster allocation state
...
Pull vfs fixes from Christian Brauner:
- Fix a missing rcu_read_unlock() in nsfs by switching to a cleanup
guard
- Add missing module descriptor for adfs
* tag 'vfs-6.11-rc1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
nsfs: use cleanup guard
fs/adfs: add MODULE_DESCRIPTION
Pull documentation updates from Jonathan Corbet:
"Nothing hugely exciting happening in the documentation tree this time
around, mostly more of the usual:
- More Spanish, Italian, and Chinese translations
- A new script, scripts/checktransupdate.py, can be used to see which
commits have touched an (English) document since a given
translation was last updated.
- A couple of "best practices" suggestions (on Link: tags and
off-list discussions) that were not entirely at consensus level,
but I concluded they were close enough to accept.
- Some nice cleanups removing documentation for kernel parameters
that have not been recognized for ... a long time.
...along with the usual updates, typo fixes, and such"
* tag 'docs-6.11' of git://git.lwn.net/linux: (57 commits)
Documentation: Document user_events ioctl code
docs/pinctrl: fix typo in mapping example
docs: maintainer: discourage taking conversations off-list
docs: driver-model: platform: update the definition of platform_driver
docs/sp_SP: Add translation for scheduler/sched-design-CFS.rst
writing_musb_glue_layer.rst: Fix broken URL
zh_CN/admin-guide: one typo fix
docs/zh_CN/virt: Update the translation of guest-halt-polling.rst
Documentation: add reference from dynamic debug to loglevel kernel params
Documentation: best practices for using Link trailers
Documentation: fix links to mailing list services
Documentation: exception-tables.rst: Fix the wrong steps referenced
docs/zh_CN: add process/researcher-guidelines Chinese translation
Documentation/tools/rv: fix document header
docs/sp_SP: Add translation of process/maintainer-kvm-x86.rst
docs/admin-guide/mm: correct typo 'quired' to 'queried'
Add libps2 to the input section of driver-api
Docs/mm/index: move allocation profiling document to unsorted documents chapter
Docs/mm/index: rename 'Legacy Documentation' to 'Unsorted Documentation'
Docs/mm/index: Remove 'Memory Management Guide' chapter marker
...
Pull sparc updates from Andreas Larsson:
- Add MODULE_DESCRIPTION for a number of sbus drivers
- Fix linking error for large sparc32 kernels
- Fix incorrect functions signature and prototype warnings for sparc64
* tag 'sparc-for-6.11-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc:
sparc64: Fix prototype warnings in hibernate.c
sparc64: Fix prototype warning for prom_get_mmu_ihandle
sparc64: Fix incorrect function signature and add prototype for prom_cif_init
sparc64: Fix prototype warnings for floppy_64.h
sparc32: Fix truncated relocation errors when linking large kernels
sbus: add missing MODULE_DESCRIPTION() macros
Pull s390 updates from Vasily Gorbik:
- Remove restrictions on PAI NNPA and crypto counters, enabling
concurrent per-task and system-wide sampling and counting events
- Switch to GENERIC_CPU_DEVICES by setting up the CPU present mask in
the architecture code and letting the generic code handle CPU
bring-up
- Add support for the diag204 busy indication facility to prevent
undesirable blocking during hypervisor logical CPU utilization
queries. Implement results caching
- Improve the handling of Store Data SCLP events by suppressing
unnecessary warning, preventing buffer release in I/O during
failures, and adding timeout handling for Store Data requests to
address potential firmware issues
- Provide optimized __arch_hweight*() implementations
- Remove the unnecessary CPU KOBJ_CHANGE uevents generated during
topology updates, as they are unused and also not present on other
architectures
- Cleanup atomic_ops, optimize __atomic_set() for small values and
__atomic_cmpxchg_bool() for compilers supporting flag output
constraint
- Couple of cleanups for KVM:
- Move and improve KVM struct definitions for DAT tables from
gaccess.c to a new header
- Pass the asce as parameter to sie64a()
- Make the crdte() and cspg() page table handling wrappers return a
boolean to indicate success, like the other existing "compare and
swap" wrappers
- Add documentation for HWCAP flags
- Switch to obtaining total RAM pages from memblock instead of
totalram_pages() during mm init, to ensure correct calculation of
zero page size, when defer_init is enabled
- Refactor lowcore access and switch to using the get_lowcore()
function instead of the S390_lowcore macro
- Cleanups for PG_arch_1 and folio handling in UV and hugetlb code
- Add missing MODULE_DESCRIPTION() macros
- Fix VM_FAULT_HWPOISON handling in do_exception()
* tag 's390-6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits)
s390/mm: Fix VM_FAULT_HWPOISON handling in do_exception()
s390/kvm: Move bitfields for dat tables
s390/entry: Pass the asce as parameter to sie64a()
s390/sthyi: Use cached data when diag is busy
s390/sthyi: Move diag operations
s390/hypfs_diag: Diag204 busy loop
s390/diag: Add busy-indication-facility requirements
s390/diag: Diag204 add busy return errno
s390/diag: Return errno's from diag204
s390/sclp: Diag204 busy indication facility detection
s390/atomic_ops: Make use of flag output constraint
s390/atomic_ops: Improve __atomic_set() for small values
s390/atomic_ops: Use symbolic names
s390/smp: Switch to GENERIC_CPU_DEVICES
s390/hwcaps: Add documentation for HWCAP flags
s390/pgtable: Make crdte() and cspg() return a value
s390/topology: Remove CPU KOBJ_CHANGE uevents
s390/sclp: Add timeout to Store Data requests
s390/sclp: Prevent release of buffer in I/O
s390/sclp: Suppress unnecessary Store Data warning
...
If a btree_trans is in use it's supposed to be passed to fsck_err so
that it can be unlocked if we're waiting on userspace input; but the
btree IO paths do call fsck errors where a btree_trans exists on the
stack but it's not passed through.
But it's ok, because it's unlocked while doing IO.
Fixes: a850bde649 ("bcachefs: fsck_err() may now take a btree_trans")
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Pull x86 percpu updates from Ingo Molnar:
- Enable the named address spaces based percpu accessors optimization
on all GCC versions that contain this feature, detected through a
build-time testcase.
This effectively enables the feature on GCC 6, GCC 7 and GCC 8
versions.
- Fix operand constraint modifier in __raw_cpu_write()
- Reorganize the per-CPU headers for better readability
- Misc cleanups and fixes
* tag 'x86-percpu-2024-07-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/percpu: Enable named address spaces for all capable GCC versions
x86/percpu: Clean up <asm/percpu.h> vertical alignment details
x86/percpu: Clean up <asm/percpu.h> a bit
x86/percpu: Move some percpu accessors around to reduce ifdeffery
x86/percpu: Rename percpu_stable_op() to __raw_cpu_read_stable()
x86/percpu: Fix operand constraint modifier in __raw_cpu_write()
x86/percpu: Introduce the __raw_cpu_read_const() macro
x86/percpu: Unify percpu read-write accessors
x86/percpu: Move some percpu macros around for readability
x86/percpu: Introduce the pcpu_binary_op() macro
Pull slab updates from Vlastimil Babka:
"The most prominent change this time is the kmem_buckets based
hardening of kmalloc() allocations from Kees Cook.
We have also extended the kmalloc() alignment guarantees for
non-power-of-two sizes in a way that benefits rust.
The rest are various cleanups and non-critical fixups.
- Dedicated bucket allocator (Kees Cook)
This series [1] enhances the probabilistic defense against heap
spraying/grooming of CONFIG_RANDOM_KMALLOC_CACHES from last year.
kmalloc() users that are known to be useful for exploits can get
completely separate set of kmalloc caches that can't be shared with
other users. The first converted users are alloc_msg() and
memdup_user().
The hardening is enabled by CONFIG_SLAB_BUCKETS.
- Extended kmalloc() alignment guarantees (Vlastimil Babka)
For years now we have guaranteed natural alignment for power-of-two
allocations, but nothing was defined for other sizes (in practice,
we have two such buckets, kmalloc-96 and kmalloc-192).
To avoid unnecessary padding in the rust layer due to its alignment
rules, extend the guarantee so that the alignment is at least the
largest power-of-two divisor of the requested size.
This fits what rust needs, is a superset of the existing
power-of-two guarantee, and does not in practice change the layout
(and thus does not add overhead due to padding) of the kmalloc-96
and kmalloc-192 caches, unless slab debugging is enabled for them.
- Cleanups and non-critical fixups (Chengming Zhou, Suren
Baghdasaryan, Matthew Willcox, Alex Shi, and Vlastimil Babka)
Various tweaks related to the new alloc profiling code, folio
conversion, debugging and more leftovers after SLAB"
Link: https://lore.kernel.org/all/20240701190152.it.631-kees@kernel.org/ [1]
* tag 'slab-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/memcg: alignment memcg_data define condition
mm, slab: move prepare_slab_obj_exts_hook under CONFIG_MEM_ALLOC_PROFILING
mm, slab: move allocation tagging code in the alloc path into a hook
mm/util: Use dedicated slab buckets for memdup_user()
ipc, msg: Use dedicated slab buckets for alloc_msg()
mm/slab: Introduce kmem_buckets_create() and family
mm/slab: Introduce kvmalloc_buckets_node() that can take kmem_buckets argument
mm/slab: Plumb kmem_buckets into __do_kmalloc_node()
mm/slab: Introduce kmem_buckets typedef
slab, rust: extend kmalloc() alignment guarantees to remove Rust padding
slab: delete useless RED_INACTIVE and RED_ACTIVE
slab: don't put freepointer outside of object if only orig_size
slab: make check_object() more consistent
mm: Reduce the number of slab->folio casts
mm, slab: don't wrap internal functions with alloc_hooks()
Pull memblock updates from Mike Rapoport:
- 'reserve_mem' command line parameter to allow creation of named
memory reservation at boot time.
The driving use-case is to improve the ability of pstore to retain
ramoops data across reboots.
- cleanups and small improvements in memblock and mm_init
- new tests cases in memblock test suite
* tag 'memblock-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
memblock tests: fix implicit declaration of function 'numa_valid_node'
memblock: Move late alloc warning down to phys alloc
pstore/ramoops: Add ramoops.mem_name= command line option
mm/memblock: Add "reserve_mem" to reserved named memory at boot up
mm/mm_init.c: don't initialize page->lru again
mm/mm_init.c: not always search next deferred_init_pfn from very beginning
mm/mm_init.c: use deferred_init_mem_pfn_range_in_zone() to decide loop condition
mm/mm_init.c: get the highest zone directly
mm/mm_init.c: move nr_initialised reset down a bit
mm/memblock: fix a typo in description of for_each_mem_region()
mm/mm_init.c: use memblock_region_memory_base_pfn() to get startpfn
mm/memblock: use PAGE_ALIGN_DOWN to get pgend in free_memmap
mm/memblock: return true directly on finding overlap region
memblock tests: add memblock_overlaps_region_checks
mm/memblock: fix comment for memblock_isolate_range()
memblock tests: add memblock_reserve_many_may_conflict_check()
memblock tests: add memblock_reserve_all_locations_check()
mm/memblock: remove empty dummy entry
Pull perf tools updates from Namhyung Kim:
"Build:
- Build each directory as a library so that depedency check for the
python extension module can be automatic
- Use pkg-config to check libtraceevent and libtracefs
perf sched:
- Add --task-name and --fuzzy-name options for `perf sched map`
It focuses on selected tasks only by removing unrelated tasks in
the output. It matches the task comm with the given string and the
--fuzzy-name option allows the partial matching:
$ sudo perf sched record -a sleep 1
$ sudo perf sched map --task-name kworker --fuzzy-name
. . . . - *A0 . . 481065.315131 secs A0 => kworker/5:2-i91:438521
. . . . - *- . . 481065.315160 secs
*B0 . . . - . . . 481065.316435 secs B0 => kworker/0:0-i91:437860
*- . . . . . . . 481065.316441 secs
. . . . . *A0 . . 481065.318703 secs
. . . . . *- . . 481065.318717 secs
. . *C0 . . . . . 481065.320544 secs C0 => kworker/u16:30-:430186
. . *- . . . . . 481065.320555 secs
. . *D0 . . . . . 481065.328524 secs D0 => kworker/2:0-kdm:429654
*B0 . D0 . - . . . 481065.328527 secs
*- . D0 . - . . . 481065.328535 secs
. . *- . . . . . 481065.328535 secs
- Fix -r/--repeat option of perf sched replay
The documentation said -1 will work as infinity but it didn't
accept the value. Update the code and document to use 0 instead
- Fix perf sched timehist to account the delay time for preempted
tasks
Perf event filtering:
- perf top gained filtering support on regular events using BPF like
perf record. Previously it was able to use it for tracepoints only
- The BPF filter now supports filtering by UID/GID. This should be
preferred than -u <UID> option as it's racy to scan /proc to check
tasks for the user and fails to open an event for the task if it's
already gone
$ sudo perf top -e cycles --filter "uid == $(id -u)"
perf report:
- Skip dummy events in the group output by default. The --skip-empty
option controls display of empty events without samples. But perf
report can force display all events in a group
In this case, auto-added a dummy event (for a system-wide record)
ends up in the output. Now it can skip those empty events even in
the group display mode
To preserve the old behavior, run this:
$ perf report --group --no-skip-empty
perf stat:
- Choose the most disaggregate option when multiple aggregation
options are given. It used to pick the last option in the command
line but it can be confusing and not consistent. Now it'll choose
the smallest unit
For example, it'd aggregate the result per-core when the user gave
both --per-socket and --per-core options at the same time
Internals:
- Fix `perf bench` when some CPUs are offline
- Fix handling of JIT symbol mappings to accept "/tmp/perf-${PID}.map
patterns only so that it can not be confused by other /tmp/perf-*
files
- Many improvements and fixes for `perf test`
Others:
- Support some new instructions for Intel-PT
- Fix syscall ID mapping in perf trace
- Document AMD IBS PMU usages
- Change `perf lock info` to show map and thread info by default
Vendor JSON events:
- Update Intel events and metrics
- Add i.MX9[35] DDR metrics"
* tag 'perf-tools-for-v6.11-2024-07-16' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (125 commits)
perf trace: Fix iteration of syscall ids in syscalltbl->entries
perf dso: Fix address sanitizer build
perf mem: Warn if memory events are not supported on all CPUs
perf arm-spe: Support multiple Arm SPE PMUs
perf build x86: Fix SC2034 error in syscalltbl.sh
perf record: Fix memset out-of-range error
perf sched map: Add --fuzzy-name option for fuzzy matching in task names
perf sched map: Add support for multiple task names using CSV
perf sched map: Add task-name option to filter the output map
perf build: Conditionally add feature check flags for libtrace{event,fs}
perf install: Don't propagate subdir to Documentation submake
perf vendor events arm64:: Add i.MX95 DDR Performance Monitor metrics
perf vendor events arm64:: Add i.MX93 DDR Performance Monitor metrics
perf dsos: When adding a dso into sorted dsos maintain the sort order
perf comm str: Avoid sort during insert
perf report: Calling available function for stats printing
perf intel-pt: Fix exclude_guest setting
perf intel-pt: Fix aux_watermark calculation for 64-bit size
perf sched replay: Fix -r/--repeat command line option for infinity
perf: pmus: Remove unneeded semicolon
...
Pull tracing CREDITS file update from Steven Rostedt:
"Update of MAINTAINERS and CREDITS file
- Update Daniel Bristot de Oliveira's entry in MAINTAINERS with
respect to his tracing code.
- Add more credits to him in CREDITS file and move his entry to be
alphabetical"
* tag 'trace-v6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Update MAINTAINERS file
This is a partial revert of commit
8117961d98f ("x86/efi: Disregard setup header of loaded image")
which triggers boot issues on older Dell laptops. As it turns out,
switching back to a heap allocation for the struct boot_params
constructed by the EFI stub works around this, even though it is unclear
why.
Cc: Christian Heusel <christian@heusel.eu>
Reported-by: <mavrix#kernel@simplelogin.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Pull tracing tools updates from Steven Rostedt:
"Trivial updates for 6.11:
- Use pretty formatting only on interactive tty in rtla/osnoise
- Better reporting when histogram is empty in rtla/osnoise
- Use the correct library name for "libtracefs" in feature detection"
* tag 'trace-tools-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tools: build: use correct lib name for libtracefs feature detection
rtla/osnoise: Better report when histogram is empty
rtla/osnoise: Use pretty formatting only on interactive tty
Pull ftrace updates from Steven Rostedt:
"Rewrite of function graph tracer to allow multiple users
Up until now, the function graph tracer could only have a single user
attached to it. If another user tried to attach to the function graph
tracer while one was already attached, it would fail. Allowing
function graph tracer to have more than one user has been asked for
since 2009, but it required a rewrite to the logic to pull it off so
it never happened. Until now!
There's three systems that trace the return of a function. That is
kretprobes, function graph tracer, and BPF. kretprobes and function
graph tracing both do it similarly. The difference is that kretprobes
uses a shadow stack per callback and function graph tracer creates a
shadow stack for all tasks. The function graph tracer method makes it
possible to trace the return of all functions. As kretprobes now needs
that feature too, allowing it to use function graph tracer was needed.
BPF also wants to trace the return of many probes and its method
doesn't scale either. Having it use function graph tracer would
improve that.
By allowing function graph tracer to have multiple users allows both
kretprobes and BPF to use function graph tracer in these cases. This
will allow kretprobes code to be removed in the future as it's version
will no longer be needed.
Note, function graph tracer is only limited to 16 simultaneous users,
due to shadow stack size and allocated slots"
* tag 'ftrace-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (49 commits)
fgraph: Use str_plural() in test_graph_storage_single()
function_graph: Add READ_ONCE() when accessing fgraph_array[]
ftrace: Add missing kerneldoc parameters to unregister_ftrace_direct()
function_graph: Everyone uses HAVE_FUNCTION_GRAPH_RET_ADDR_PTR, remove it
function_graph: Fix up ftrace_graph_ret_addr()
function_graph: Make fgraph_update_pid_func() a stub for !DYNAMIC_FTRACE
function_graph: Rename BYTE_NUMBER to CHAR_NUMBER in selftests
fgraph: Remove some unused functions
ftrace: Hide one more entry in stack trace when ftrace_pid is enabled
function_graph: Do not update pid func if CONFIG_DYNAMIC_FTRACE not enabled
function_graph: Make fgraph_do_direct static key static
ftrace: Fix prototypes for ftrace_startup/shutdown_subops()
ftrace: Assign RCU list variable with rcu_assign_ptr()
ftrace: Assign ftrace_list_end to ftrace_ops_list type cast to RCU
ftrace: Declare function_trace_op in header to quiet sparse warning
ftrace: Add comments to ftrace_hash_move() and friends
ftrace: Convert "inc" parameter to bool in ftrace_hash_rec_update_modify()
ftrace: Add comments to ftrace_hash_rec_disable/enable()
ftrace: Remove "filter_hash" parameter from __ftrace_hash_rec_update()
ftrace: Rename dup_hash() and comment it
...
Pull tracing updates from Steven Rostedt:
"Trivial updates for 6.11:
- Set rtla/osnoise default threshold to 1us from 5us
The 5us default was missing noise that people cared about. Changing
it to 1us makes it work as expected.
- Restructure how sched_switch prev_comm and next_comm was being saved
The prev_comm was being saved along with the other next fields, and
the next_comm was being saved along with the other prev fields.
This is just a cosmetic change.
- Have the allocation of pid_list use GFP_NOWAIT instead of GFP_KERNEL
The allocation can happen in irq_work context, but luckily, the
size was by default so large, it was never triggered. But in case
it ever is, use the NOWAIT allocation in the interrupt context.
- Fix some kernel doc errors"
* tag 'trace-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
trace/pid_list: Change gfp flags in pid_list_fill_irq()
tracing/sched: sched_switch: place prev_comm and next_comm in right order
rtla/osnoise: set the default threshold to 1us
tracing: Fix trace_pid_list_free() kernel-doc
Pull bootconfig update from Masami Hiramatsu:
- Remove duplicate included header file linux/bootconfig.h from
lib/bootconfig.c. This is a cleanup, no behavior change.
* tag 'bootconfig-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
bootconfig: Remove duplicate included header file linux/bootconfig.h
Pull probes updates from Masami Hiramatsu:
"Uprobes:
- x86/shstk: Make return uprobe work with shadow stack
- Add uretprobe syscall which speeds up the uretprobe 10-30% faster.
This syscall is automatically used from user-space trampolines
which are generated by the uretprobe. If this syscall is used by
normal user program, it will cause SIGILL. Note that this is
currently only implemented on x86_64.
(This also has two fixes for adjusting the syscall number to avoid
conflict with new *attrat syscalls.)
- uprobes/perf: fix user stack traces in the presence of pending
uretprobe. This corrects the uretprobe's trampoline address in the
stacktrace with correct return address
- selftests/x86: Add a return uprobe with shadow stack test
- selftests/bpf: Add uretprobe syscall related tests.
- test case for register integrity check
- test case with register changing case
- test case for uretprobe syscall without uprobes (expected to fail)
- test case for uretprobe with shadow stack
- selftests/bpf: add test validating uprobe/uretprobe stack traces
- MAINTAINERS: Add uprobes entry. This does not specify the tree but
to clarify who maintains and reviews the uprobes
Kprobes:
- tracing/kprobes: Test case cleanups.
Replace redundant WARN_ON_ONCE() + pr_warn() with WARN_ONCE() and
remove unnecessary code from selftest
- tracing/kprobes: Add symbol counting check when module loads.
This checks the uniqueness of the probed symbol on modules. The
same check has already done for kernel symbols
(This also has a fix for build error with CONFIG_MODULES=n)
Cleanup:
- Add MODULE_DESCRIPTION() macros for fprobe and kprobe examples"
* tag 'probes-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
MAINTAINERS: Add uprobes entry
selftests/bpf: Change uretprobe syscall number in uprobe_syscall test
uprobe: Change uretprobe syscall scope and number
tracing/kprobes: Fix build error when find_module() is not available
tracing/kprobes: Add symbol counting check when module loads
selftests/bpf: add test validating uprobe/uretprobe stack traces
perf,uprobes: fix user stack traces in the presence of pending uretprobes
tracing/kprobe: Remove cleanup code unrelated to selftest
tracing/kprobe: Integrate test warnings into WARN_ONCE
selftests/bpf: Add uretprobe shadow stack test
selftests/bpf: Add uretprobe syscall call from user space test
selftests/bpf: Add uretprobe syscall test for regs changes
selftests/bpf: Add uretprobe syscall test for regs integrity
selftests/x86: Add return uprobe shadow stack test
uprobe: Add uretprobe syscall to speed up return probe
uprobe: Wire up uretprobe system call
x86/shstk: Make return uprobe work with shadow stack
samples: kprobes: add missing MODULE_DESCRIPTION() macros
fprobe: add missing MODULE_DESCRIPTION() macro
Similarly to PCI where msi-map/msi-mask are used to compute the full RID
(aka DID in ITS speak), use the msi-parent as the discovery mechanism,
since there is no way a device can generally express its ID.
However, since switching to a per-device MSI domain model, the domain
passed to its_pmsi_prepare() is the wrong one, and points to the device's
instead of the ITS'. Bad.
Use the parent domain instead, which is the ITS domain.
Fixes: 80b63cc1cc146 ("irqchip/gic-v3-its: Switch platform MSI to MSI parent")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240718075804.2245733-1-maz@kernel.org
Since 6adb35ff43a16 ("irqchip/gic-v3-its: Provide MSI parent for
PCI/MSI[-X]"), the primary domain a PCI device allocates its interrupts
from is the one that is directly attached to the device itself.
By virtue of being a PCI device, it has no OF node.
This domain is (through more layer than it is worth describing)
passed to its_pci_msi_prepare(), which tries to compute the
full RID that is presented to the ITS by the device. This is ultimately
done by calling pci_msi_domain_get_msi_rid(), passing both the
domain and the PCI device as arguments.
The baked-in assumption is that either the domain that is passed
to pci_msi_domain_get_msi_rid() describes an interrupt controller
with either an OF node or an entry in an ACPI IORT table.
In this case, it is *neither*. This domain is does not represent
anything firmware-based, but just an allocation unit for the device.
As a result, it fails to provide the full RID (which requires inspecting
the msi-map/msi-mask properties in the DT), and stick to the BDF, which
isn't very useful.
Tragedy follows with a litany of devices that randomly die as they fail to
see any MSI (because the RID is wrong) or fail to get an allocation
(because they try to steal LPIs from their neighbour's pool).
This will happen on any system where a single ITS is shared by multiple
root ports and end-points with overlapping BDF numbers, and has the
topology described in the device-tree. Simpler DT topologies will luckily
work, and so will ACPI-based systems.
Solve it by pointing pci_msi_domain_get_msi_rid() at the *parent* domain,
which is the ITS, resulting in a correct mapping and a restored happiness
in my personal zoo.
Fixes: 6adb35ff43a16 ("irqchip/gic-v3-its: Provide MSI parent for PCI/MSI[-X]")
Reported-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240717195937.2240400-1-maz@kernel.org
The core infrastructure has everything in place to switch ICU to per
device MSI domains and avoid the convoluted construct of the existing
platform-MSI layering violation.
The new infrastructure provides a wired interrupt specific interface in the
MSI core which converts the 'hardware interrupt number + trigger type'
allocation which is required for wired interrupts in the regular irqdomain
code to a normal MSI allocation.
The hardware interrupt number and the trigger type are stored in the MSI
descriptor device cookie by the core code so the ICU specific code can
retrieve them.
The new per device domain is only instantiated when the irqdomain which is
associated to the ICU device provides MSI parent functionality. Up to
that point it invokes the existing code. Once the parent is converted the
code for the current platform-MSI mechanism is removed.
The new domain shares the interrupt chip callbacks and the translation
function. The only new functionality aside of filling out the
msi_domain_templates is a domain specific set_desc() callback, which will go
away once all platform-MSI code has been converted.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Shivamurthy Shastri <shivamurthy.shastri@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240623142235.635015886@linutronix.de
The MBI chip creates two MSI domains:
- PCI/MSI
- Platform device domain
Both have the MBI domain as parent and differ slightly in the interrupt
chip callbacks and the platform device domain supports level type
signaling.
Convert it over to the MSI parent domain mechanism by:
- Providing the required templates
- Implementing a custom init_dev_msi_info() callback which sets the chip
callbacks and the level support flags depending on the domain bus token
type of the per device domain.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240623142235.455849114@linutronix.de
The core infrastructure has everything in place to switch MBIGEN to per
device MSI domains and avoid the convoluted construct of the existing
platform-MSI layering violation.
The new infrastructure provides a wired interrupt specific interface in the
MSI core which converts the 'hardware interrupt number + trigger type'
allocation which is required for wired interrupts in the regular irqdomain
code to a normal MSI allocation.
The hardware interrupt number and the trigger type are stored in the MSI
descriptor device cookie by the core code so the MBIGEN specific code can
retrieve them.
The new per device domain is only instantiated when the irqdomain which is
associated to the MBIGEN device provides MSI parent functionality. Up to
that point it invokes the existing code. Once the parent is converted the
code for the current platform-MSI mechanism is removed.
The new domain shares the interrupt chip callbacks and the translation
function. The only new functionality aside of filling out the
msi_domain_template is a domain specific set_desc() callback, which will go
away once all platform-MSI code has been converted.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Shivamurthy Shastri <shivamurthy.shastri@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240623142235.146579575@linutronix.de
The its_pci_msi_prepare() function from the ITS-PCI/MSI code provides the
'global' PCI/MSI domains. Move this function to the ITS-MSI parent code and
amend the function to use the domain hardware size, which is the MSI[X]
vector count, for allocating the ITS slots for the PCI device.
Enable PCI matching in msi_parent_ops and provide the necessary update to
the ITS specific child domain initialization function so that the prepare
callback gets invoked on allocations.
The latter might be optimized to do the allocation right at the point where
the child domain is initialized, but keep it simple for now.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Shivamurthy Shastri <shivamurthy.shastri@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240623142235.024567623@linutronix.de
To support per device MSI domains the ITS must provide MSI parent domain
functionality.
Provide the basic skeleton for this:
- msi_parent_ops
- child domain init callback
- the MSI parent flag set in irqdomain::flags
This does not make ITS a functional parent domain as there is no bit set in
the bus_select_mask yet, but it provides the base to implement PCI and
platform MSI support gradually on top.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Shivamurthy Shastri <shivamurthy.shastri@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240623142234.903076277@linutronix.de
