linux/kernel
Linus Torvalds feafee2845 arm64 updates for 6.18
Confidential computing:
  - Add support for accepting secrets from firmware (e.g. ACPI CCEL)
    and mapping them with appropriate attributes.
 
 CPU features:
  - Advertise atomic floating-point instructions to userspace.
 
  - Extend Spectre workarounds to cover additional Arm CPU variants.
 
  - Extend list of CPUs that support break-before-make level 2 and
    guarantee not to generate TLB conflict aborts for changes of mapping
    granularity (BBML2_NOABORT).
 
  - Add GCS support to our uprobes implementation.
 
 Documentation:
  - Remove bogus SME documentation concerning register state when
    entering/exiting streaming mode.
 
 Entry code:
  - Switch over to the generic IRQ entry code (GENERIC_IRQ_ENTRY).
 
  - Micro-optimise syscall entry path with a compiler branch hint.
 
 Memory management:
  - Enable huge mappings in vmalloc space even when kernel page-table
    dumping is enabled.
 
  - Tidy up the types used in our early MMU setup code.
 
  - Rework rodata= for closer parity with the behaviour on x86.
 
  - For CPUs implementing BBML2_NOABORT, utilise block mappings in the
    linear map even when rodata= applies to virtual aliases.
 
  - Don't re-allocate the virtual region between '_text' and '_stext',
    as doing so confused tools parsing /proc/vmcore.
 
 Miscellaneous:
  - Clean-up Kconfig menuconfig text for architecture features.
 
  - Avoid redundant bitmap_empty() during determination of supported
    SME vector lengths.
 
  - Re-enable warnings when building the 32-bit vDSO object.
 
  - Avoid breaking our eggs at the wrong end.
 
 Perf and PMUs:
  - Support for v3 of the Hisilicon L3C PMU.
 
  - Support for Hisilicon's MN and NoC PMUs.
 
  - Support for Fujitsu's Uncore PMU.
 
  - Support for SPE's extended event filtering feature.
 
  - Preparatory work to enable data source filtering in SPE.
 
  - Support for multiple lanes in the DWC PCIe PMU.
 
  - Support for i.MX94 in the IMX DDR PMU driver.
 
  - MAINTAINERS update (Thank you, Yicong).
 
  - Minor driver fixes (PERF_IDX2OFF() overflow, CMN register offsets).
 
 Selftests:
  - Add basic LSFE check to the existing hwcaps test.
 
  - Support nolibc in GCS tests.
 
  - Extend SVE ptrace test to pass unsupported regsets and invalid vector
    lengths.
 
  - Minor cleanups (typos, cosmetic changes).
 
 System registers:
  - Fix ID_PFR1_EL1 definition.
 
  - Fix incorrect signedness of some fields in ID_AA64MMFR4_EL1.
 
  - Sync TCR_EL1 definition with the latest Arm ARM (L.b).
 
  - Be stricter about the input fed into our AWK sysreg generator script.
 
  - Typo fixes and removal of redundant definitions.
 
 ACPI, EFI and PSCI:
  - Decouple Arm's "Software Delegated Exception Interface" (SDEI)
    support from the ACPI GHES code so that it can be used by platforms
    booted with device-tree.
 
  - Remove unnecessary per-CPU tracking of the FPSIMD state across EFI
    runtime calls.
 
  - Fix a node refcount imbalance in the PSCI device-tree code.
 
 CPU Features:
  - Ensure register sanitisation is applied to fields in ID_AA64MMFR4.
 
  - Expose AIDR_EL1 to userspace via sysfs, primarily so that KVM guests
    can reliably query the underlying CPU types from the VMM.
 
  - Re-enabling of SME support (CONFIG_ARM64_SME) as a result of fixes
    to our context-switching, signal handling and ptrace code.
 -----BEGIN PGP SIGNATURE-----
 
 iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmjWlMIQHHdpbGxAa2Vy
 bmVsLm9yZwAKCRC3rHDchMFjNIVYB/sHaFYmToEaK4ldMfTn4ZQ8yr9ZuTMLr/ji
 zOm7wULP08wKIcp6t+1N6e7A8Wb3YSErxTywc4b9MqctIel1WvBMewjJd38xb2qO
 hFCuRuWemfyt6Rw/EGMCP54yueLzKbnN4q+/Aks8jedWtS+AXY6McGCJOzMjuECL
 zKb68Hqqb09YQ2b2BPSAiU9g42rotiIYppLaLbEdxUnw/eqfEN3wSrl92/LuBlqH
 r2wZDnJwA5q8Iy9HWlnhg4Jax0Cs86jSJPIQLB6v3WWhc3HR49pm5cqYzYkUht9L
 nA6eaWJiBl/+k3S+ftPKNzU8n04r15lqyNZE2FYfRk+0BPSacJOf
 =kO15
 -----END PGP SIGNATURE-----

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "There's good stuff across the board, including some nice mm
  improvements for CPUs with the 'noabort' BBML2 feature and a clever
  patch to allow ptdump to play nicely with block mappings in the
  vmalloc area.

  Confidential computing:

   - Add support for accepting secrets from firmware (e.g. ACPI CCEL)
     and mapping them with appropriate attributes.

  CPU features:

   - Advertise atomic floating-point instructions to userspace

   - Extend Spectre workarounds to cover additional Arm CPU variants

   - Extend list of CPUs that support break-before-make level 2 and
     guarantee not to generate TLB conflict aborts for changes of
     mapping granularity (BBML2_NOABORT)

   - Add GCS support to our uprobes implementation.

  Documentation:

   - Remove bogus SME documentation concerning register state when
     entering/exiting streaming mode.

  Entry code:

   - Switch over to the generic IRQ entry code (GENERIC_IRQ_ENTRY)

   - Micro-optimise syscall entry path with a compiler branch hint.

  Memory management:

   - Enable huge mappings in vmalloc space even when kernel page-table
     dumping is enabled

   - Tidy up the types used in our early MMU setup code

   - Rework rodata= for closer parity with the behaviour on x86

   - For CPUs implementing BBML2_NOABORT, utilise block mappings in the
     linear map even when rodata= applies to virtual aliases

   - Don't re-allocate the virtual region between '_text' and '_stext',
     as doing so confused tools parsing /proc/vmcore.

  Miscellaneous:

   - Clean-up Kconfig menuconfig text for architecture features

   - Avoid redundant bitmap_empty() during determination of supported
     SME vector lengths

   - Re-enable warnings when building the 32-bit vDSO object

   - Avoid breaking our eggs at the wrong end.

  Perf and PMUs:

   - Support for v3 of the Hisilicon L3C PMU

   - Support for Hisilicon's MN and NoC PMUs

   - Support for Fujitsu's Uncore PMU

   - Support for SPE's extended event filtering feature

   - Preparatory work to enable data source filtering in SPE

   - Support for multiple lanes in the DWC PCIe PMU

   - Support for i.MX94 in the IMX DDR PMU driver

   - MAINTAINERS update (Thank you, Yicong)

   - Minor driver fixes (PERF_IDX2OFF() overflow, CMN register offsets).

  Selftests:

   - Add basic LSFE check to the existing hwcaps test

   - Support nolibc in GCS tests

   - Extend SVE ptrace test to pass unsupported regsets and invalid
     vector lengths

   - Minor cleanups (typos, cosmetic changes).

  System registers:

   - Fix ID_PFR1_EL1 definition

   - Fix incorrect signedness of some fields in ID_AA64MMFR4_EL1

   - Sync TCR_EL1 definition with the latest Arm ARM (L.b)

   - Be stricter about the input fed into our AWK sysreg generator
     script

   - Typo fixes and removal of redundant definitions.

  ACPI, EFI and PSCI:

   - Decouple Arm's "Software Delegated Exception Interface" (SDEI)
     support from the ACPI GHES code so that it can be used by platforms
     booted with device-tree

   - Remove unnecessary per-CPU tracking of the FPSIMD state across EFI
     runtime calls

   - Fix a node refcount imbalance in the PSCI device-tree code.

  CPU Features:

   - Ensure register sanitisation is applied to fields in ID_AA64MMFR4

   - Expose AIDR_EL1 to userspace via sysfs, primarily so that KVM
     guests can reliably query the underlying CPU types from the VMM

   - Re-enabling of SME support (CONFIG_ARM64_SME) as a result of fixes
     to our context-switching, signal handling and ptrace code"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (93 commits)
  arm64: cpufeature: Remove duplicate asm/mmu.h header
  arm64: Kconfig: Make CPU_BIG_ENDIAN depend on BROKEN
  perf/dwc_pcie: Fix use of uninitialized variable
  arm/syscalls: mark syscall invocation as likely in invoke_syscall
  Documentation: hisi-pmu: Add introduction to HiSilicon V3 PMU
  Documentation: hisi-pmu: Fix of minor format error
  drivers/perf: hisi: Add support for L3C PMU v3
  drivers/perf: hisi: Refactor the event configuration of L3C PMU
  drivers/perf: hisi: Extend the field of tt_core
  drivers/perf: hisi: Extract the event filter check of L3C PMU
  drivers/perf: hisi: Simplify the probe process of each L3C PMU version
  drivers/perf: hisi: Export hisi_uncore_pmu_isr()
  drivers/perf: hisi: Relax the event ID check in the framework
  perf: Fujitsu: Add the Uncore PMU driver
  arm64: map [_text, _stext) virtual address range non-executable+read-only
  arm64/sysreg: Update TCR_EL1 register
  arm64: Enable vmalloc-huge with ptdump
  arm64: cpufeature: add Neoverse-V3AE to BBML2 allow list
  arm64: errata: Apply workarounds for Neoverse-V3AE
  arm64: cputype: Add Neoverse-V3AE definitions
  ...
2025-09-29 18:48:39 -07:00
..
bpf vfs-6.18-rc1.async 2025-09-29 11:55:15 -07:00
cgroup namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
configs kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI 2025-09-24 14:29:14 -07:00
debug TTY/Serial driver updates for 6.15-rc1 2025-04-02 18:17:33 -07:00
dma dma-debug: don't enforce dma mapping check on noncoherent allocations 2025-09-02 10:18:16 +02:00
entry entry: Add arch_irqentry_exit_need_resched() for arm64 2025-09-11 15:55:34 +01:00
events arm64 updates for 6.18 2025-09-29 18:48:39 -07:00
futex futex: Prevent use-after-free during requeue-PI 2025-09-20 17:40:42 +02:00
gcov kbuild: require gcc-8 and binutils-2.30 2025-04-30 21:53:35 +02:00
irq genirq/test: Resolve irq lock inversion warnings 2025-08-06 10:29:48 +02:00
kcsan kcsan: test: Initialize dummy variable 2025-07-23 08:51:32 +02:00
livepatch sched,livepatch: Untangle cond_resched() and live-patching 2025-05-14 13:16:24 +02:00
locking - Make sure sanity checks down in the mutex lock path happen on the correct 2025-08-17 05:57:47 -07:00
module kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI 2025-09-24 14:29:14 -07:00
power Merge branches 'pm-sleep' and 'pm-em' 2025-09-11 14:22:35 +02:00
printk printk changes for 6.17 2025-08-04 10:54:36 -07:00
rcu rcu: Fix racy re-initialization of irq_work causing hangs 2025-08-11 08:43:49 +05:30
sched kernel-6.18-rc1.clone3 2025-09-29 10:36:50 -07:00
time namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
trace tracing fixes for v6.17 2025-09-28 10:26:35 -07:00
unwind unwind: Finish up unwind when a task exits 2025-07-31 10:20:11 -04:00
.gitignore kheaders: rebuild kheaders_data.tar.xz when a file is modified within a minute 2025-06-24 20:30:37 +09:00
acct.c acct: block access to kernel internal filesystems 2025-02-12 12:24:16 +01:00
async.c
audit.c audit: record AUDIT_ANOM_* events regardless of presence of rules 2025-04-11 14:14:41 -04:00
audit.h audit,module: restore audit logging in load failure case 2025-06-16 17:00:06 -04:00
audit_fsnotify.c VFS/audit: introduce kern_path_parent() for audit 2025-09-23 12:37:35 +02:00
audit_tree.c replace collect_mounts()/drop_collected_mounts() with a safer variant 2025-06-23 14:01:49 -04:00
audit_watch.c VFS/audit: introduce kern_path_parent() for audit 2025-09-23 12:37:35 +02:00
auditfilter.c audit: fix out-of-bounds read in audit_compare_dname_path() 2025-09-03 16:46:23 -04:00
auditsc.c audit,module: restore audit logging in load failure case 2025-06-16 17:00:06 -04:00
backtracetest.c
bounds.c
capability.c capability: Remove unused has_capability 2025-03-07 22:03:09 -06:00
cfi.c cfi: Move BPF CFI types and helpers to generic code 2025-07-31 18:23:53 -07:00
compat.c
configs.c
context_tracking.c context_tracking: Make RCU watch ct_kernel_exit_state() warning 2025-03-04 18:44:29 -08:00
cpu.c cpu: Remove obsolete comment from takedown_cpu() 2025-08-06 22:48:12 +02:00
cpu_pm.c
crash_core.c kdump: wait for DMA to finish when using CMA 2025-07-19 19:08:23 -07:00
crash_dump_dm_crypt.c crash_dump: retrieve dm crypt keys in kdump kernel 2025-05-21 10:48:21 -07:00
crash_reserve.c kdump: implement reserve_crashkernel_cma 2025-07-19 19:08:23 -07:00
cred.c copy_process: pass clone_flags as u64 across calltree 2025-09-01 15:31:34 +02:00
delayacct.c delayacct: remove redundant code and adjust indentation 2025-05-27 19:40:33 -07:00
dma.c
elfcorehdr.c
exec_domain.c
exit.c Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
exit.h
extable.c
fail_function.c
fork.c kernel-6.18-rc1.clone3 2025-09-29 10:36:50 -07:00
freezer.c sched,freezer: Remove unnecessary warning in __thaw_task 2025-07-17 07:56:50 -10:00
gen_kheaders.sh kheaders: make it possible to override TAR 2025-08-06 10:23:36 +09:00
groups.c
hung_task.c hung_task: extend hung task blocker tracking to rwsems 2025-07-19 19:08:26 -07:00
iomem.c mm/memremap: Pass down MEMREMAP_* flags to arch_memremap_wb() 2025-02-21 15:05:38 +01:00
irq_work.c kasan: make kasan_record_aux_stack_noalloc() the default behaviour 2025-01-13 22:40:36 -08:00
jump_label.c jump_label: Use RCU in all users of __module_text_address(). 2025-03-10 11:54:46 +01:00
kallsyms.c bpf: Clean up individual BTF_ID code 2025-07-16 18:34:42 -07:00
kallsyms_internal.h
kallsyms_selftest.c kallsyms: Use kthread_run_on_cpu() 2025-01-02 22:12:12 +01:00
kallsyms_selftest.h
kcmp.c kcmp: improve performance adding an unlikely hint to task comparisons 2025-02-21 10:25:33 +01:00
Kconfig.freezer
Kconfig.hz kernel: Fix "select" wording on HZ_250 description 2025-02-21 09:20:30 +01:00
Kconfig.kexec kho: mm: don't allow deferred struct page with KHO 2025-08-19 16:35:53 -07:00
Kconfig.locks
Kconfig.preempt sched: No PREEMPT_RT=y for all{yes,mod}config 2024-11-07 15:25:05 +01:00
kcov.c kcov: fix typo in comment of kcov_fault_in_area 2025-07-09 22:57:52 -07:00
kexec.c kexec: enable CMA based contiguous allocation 2025-08-02 12:01:38 -07:00
kexec_core.c Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
kexec_elf.c kexec: initialize ELF lowest address to ULONG_MAX 2025-03-16 22:30:47 -07:00
kexec_file.c Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
kexec_handover.c kho: warn if KHO is disabled due to an error 2025-08-19 16:35:53 -07:00
kexec_internal.h kexec: enable CMA based contiguous allocation 2025-08-02 12:01:38 -07:00
kheaders.c kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO() 2024-12-24 09:46:49 +01:00
kprobes.c kprobes: Add missing kerneldoc for __get_insn_slot 2025-07-15 18:45:34 +09:00
kstack_erase.c stackleak: Rename stackleak_track_stack to __sanitizer_cov_stack_depth 2025-07-21 21:40:39 -07:00
ksyms_common.c
ksysfs.c kernel/ksysfs.c: simplify bin_attribute definition 2025-01-07 16:59:15 +01:00
kthread.c ipvs: Fix estimator kthreads preferred affinity 2025-08-13 08:34:33 +02:00
latencytop.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
Makefile hardening updates for v6.18-rc1 2025-09-29 17:48:27 -07:00
module_signature.c
notifier.c reboot: move reboot_notifier_list to kernel/reboot.c 2024-11-05 17:12:31 -08:00
nscommon.c ns: drop assert 2025-09-25 09:23:54 +02:00
nsproxy.c namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
nstree.c ns: move ns type into struct ns_common 2025-09-25 09:23:54 +02:00
padata.c padata: use cpumask_nth() 2025-06-13 17:26:17 +08:00
panic.c Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
params.c params: Replace deprecated strcpy() with strscpy() and memcpy() 2025-08-16 21:47:25 +02:00
pid.c namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
pid_namespace.c namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
pid_sysctl.h treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
profile.c
ptrace.c ptrace: introduce PTRACE_SET_SYSCALL_INFO request 2025-05-11 17:48:15 -07:00
range.c
reboot.c - The 7 patch series "powerpc/crash: use generic crashkernel 2025-04-01 10:06:52 -07:00
regset.c
relay.c relayfs: support a counter tracking if data is too big to write 2025-07-09 22:57:52 -07:00
resource.c resource: fix false warning in __request_region() 2025-07-24 17:57:59 -07:00
resource_kunit.c resource, kunit: fix user-after-free in resource_test_region_intersects() 2024-10-09 12:47:19 -07:00
rseq.c rseq: Fix segfault on registration when rseq_cs is non-zero 2025-03-06 22:26:49 +01:00
scftorture.c scftorture: Handle NULL argument passed to scf_add_to_free_list(). 2024-11-14 16:09:51 -08:00
scs.c
seccomp.c seccomp: Fix a race with WAIT_KILLABLE_RECV if the tracer replies too fast 2025-07-29 13:33:01 -07:00
signal.c signal: Fix memory leak for PIDFD_SELF* sentinels 2025-08-19 13:51:28 +02:00
smp.c smp: Fix spelling in on_each_cpu_cond_mask()'s doc-comment 2025-08-02 14:24:50 +02:00
smpboot.c sched/smp: Use the SMP version of idle_thread_set_boot_cpu() 2025-06-13 08:47:20 +02:00
smpboot.h
softirq.c lockdep: Fix wait context check on softirq for PREEMPT_RT 2025-03-25 10:46:44 +01:00
stacktrace.c
static_call.c
static_call_inline.c Modules changes for 6.15-rc1 2025-03-30 15:44:36 -07:00
stop_machine.c sched/core: Fix migrate_swap() vs. hotplug 2025-07-01 15:02:03 +02:00
sys.c Summary of significant series in this pull request: 2025-07-31 14:57:54 -07:00
sys_ni.c
sysctl-test.c sysctl: move u8 register test to lib/test_sysctl.c 2025-04-14 14:13:41 +02:00
sysctl.c sysctl: rename kern_table -> sysctl_subsys_table 2025-07-23 11:56:02 +02:00
task_work.c kasan: make kasan_record_aux_stack_noalloc() the default behaviour 2025-01-13 22:40:36 -08:00
taskstats.c fdget(), more trivial conversions 2024-11-03 01:28:06 -05:00
torture.c torture: Add get_torture_init_jiffies() for test-start time 2025-02-05 07:14:24 -08:00
tracepoint.c tracepoint: Print the function symbol when tracepoint_debug is set 2025-03-21 15:30:10 -04:00
tsacct.c pid: change bacct_add_tsk() to use task_ppid_nr_ns() 2025-08-19 13:38:20 +02:00
ucount.c ucount: use atomic_long_try_cmpxchg() in atomic_long_inc_below() 2025-08-02 12:01:38 -07:00
uid16.c
uid16.h
umh.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
up.c
user-return-notifier.c
user.c ns: move ns type into struct ns_common 2025-09-25 09:23:54 +02:00
user_namespace.c ns: move ns type into struct ns_common 2025-09-25 09:23:54 +02:00
utsname.c namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
utsname_sysctl.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
vhost_task.c vhost: Take a reference on the task in struct vhost_task. 2025-09-21 17:44:20 -04:00
vmcore_info.c crash: export PAGE_UNACCEPTED_MAPCOUNT_VALUE to vmcoreinfo 2025-05-11 17:54:04 -07:00
watch_queue.c vfs-6.15-rc1.pipe 2025-03-24 09:52:37 -07:00
watchdog.c kernel/watchdog: add /sys/kernel/{hard,soft}lockup_count 2025-05-21 10:48:22 -07:00
watchdog_buddy.c watchdog: fix opencoded cpumask_next_wrap() in watchdog_next_cpu() 2025-07-31 11:28:03 -04:00
watchdog_perf.c watchdog/perf: Provide function for adjusting the event period 2025-07-04 13:17:30 +01:00
workqueue.c workqueue: Changes for v6.17 2025-07-31 15:40:22 -07:00
workqueue_internal.h