linux/kernel
Linus Torvalds 04d29e3609 - Untangle the Retbleed from the ITS mitigation on Intel. Allow for ITS
to enable stuffing independently from Retbleed, do some cleanups to
   simplify and streamline the code
 
 - Simplify SRSO and make mitigation types selection more versatile
   depending on the Retbleed mitigation selection. Simplify code some
 
 - Add the second part of the attack vector controls which provide a lot
   friendlier user interface to the speculation mitigations than
   selecting each one by one as it is now.
 
   Instead, the selection of whole attack vectors which are relevant to
   the system in use can be done and protection against only those
   vectors is enabled, thus giving back some performance to the users
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Merge tag 'x86_bugs_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 CPU mitigation updates from Borislav Petkov:

 - Untangle the Retbleed from the ITS mitigation on Intel. Allow for ITS
   to enable stuffing independently from Retbleed, do some cleanups to
   simplify and streamline the code

 - Simplify SRSO and make mitigation types selection more versatile
   depending on the Retbleed mitigation selection. Simplify code some

 - Add the second part of the attack vector controls which provide a lot
   friendlier user interface to the speculation mitigations than
   selecting each one by one as it is now.

   Instead, the selection of whole attack vectors which are relevant to
   the system in use can be done and protection against only those
   vectors is enabled, thus giving back some performance to the users

* tag 'x86_bugs_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
  x86/bugs: Print enabled attack vectors
  x86/bugs: Add attack vector controls for TSA
  x86/pti: Add attack vector controls for PTI
  x86/bugs: Add attack vector controls for ITS
  x86/bugs: Add attack vector controls for SRSO
  x86/bugs: Add attack vector controls for L1TF
  x86/bugs: Add attack vector controls for spectre_v2
  x86/bugs: Add attack vector controls for BHI
  x86/bugs: Add attack vector controls for spectre_v2_user
  x86/bugs: Add attack vector controls for retbleed
  x86/bugs: Add attack vector controls for spectre_v1
  x86/bugs: Add attack vector controls for GDS
  x86/bugs: Add attack vector controls for SRBDS
  x86/bugs: Add attack vector controls for RFDS
  x86/bugs: Add attack vector controls for MMIO
  x86/bugs: Add attack vector controls for TAA
  x86/bugs: Add attack vector controls for MDS
  x86/bugs: Define attack vectors relevant for each bug
  x86/Kconfig: Add arch attack vector support
  cpu: Define attack vectors
  ...
History 2025-07-29 16:34:45 -07:00
..
bpf Driver core changes for 6.17-rc1 2025-07-29 12:15:39 -07:00
cgroup cgroup: Fixes for v6.16-rc6 2025-07-19 10:00:47 -07:00
configs configs/hardening: Enable CONFIG_INIT_ON_FREE_DEFAULT_ON 2025-07-21 21:41:57 -07:00
debug TTY/Serial driver updates for 6.15-rc1 2025-04-02 18:17:33 -07:00
dma dma-contiguous: hornor the cma address limit setup by user 2025-06-12 08:38:40 +02:00
entry Prerequisite for ARM[64] generic entry conversion 2025-06-30 19:54:19 +02:00
events perf/core: Fix WARN in perf_sigtrap() 2025-07-09 13:40:17 +02:00
futex futex: Remove support for IMMUTABLE 2025-07-11 16:02:01 +02:00
gcov kbuild: require gcc-8 and binutils-2.30 2025-04-30 21:53:35 +02:00
irq Updates for interrupt chip drivers: 2025-07-29 13:26:05 -07:00
kcsan treewide, timers: Rename destroy_timer_on_stack() as timer_destroy_on_stack() 2025-05-08 19:49:33 +02:00
livepatch sched,livepatch: Untangle cond_resched() and live-patching 2025-05-14 13:16:24 +02:00
locking Generic: 2025-06-02 12:24:58 -07:00
module Driver core changes for 6.17-rc1 2025-07-29 12:15:39 -07:00
power PM: hibernate: Fix up white space that does not follow coding style 2025-07-17 20:30:52 +02:00
printk printk changes for 6.15 2025-03-27 19:22:24 -07:00
rcu rcu: Return early if callback is not specified 2025-06-20 15:31:48 -04:00
sched Updates for the generic entry code: 2025-07-29 15:14:29 -07:00
time Updates for the timekeeping and VDSO code: 2025-07-29 14:12:52 -07:00
trace for-6.17/block-20250728 2025-07-28 16:43:54 -07:00
.gitignore .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
acct.c acct: block access to kernel internal filesystems 2025-02-12 12:24:16 +01:00
async.c async: Use a dedicated unbound workqueue with raised min_active 2024-02-09 11:13:59 -10:00
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 audit: fix potential double free on error path from fsnotify_add_inode_mark 2022-08-22 18:50:06 -04:00
audit_tree.c replace collect_mounts()/drop_collected_mounts() with a safer variant 2025-06-23 14:01:49 -04:00
audit_watch.c fs: add kern_path_locked_negative() 2025-04-15 11:32:34 +02:00
auditfilter.c audit: fix suffixed '/' filename matching 2024-12-05 19:22:38 -05:00
auditsc.c audit,module: restore audit logging in load failure case 2025-06-16 17:00:06 -04:00
backtracetest.c backtracetest: add MODULE_DESCRIPTION() 2024-06-24 22:24:55 -07:00
bounds.c bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS 2024-04-29 08:29:29 -07:00
capability.c capability: Remove unused has_capability 2025-03-07 22:03:09 -06:00
cfi.c Modules changes for 6.15-rc1 2025-03-30 15:44:36 -07:00
compat.c sched_getaffinity: don't assume 'cpumask_size()' is fully initialized 2023-03-14 19:32:38 -07:00
configs.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
context_tracking.c context_tracking: Make RCU watch ct_kernel_exit_state() warning 2025-03-04 18:44:29 -08:00
cpu.c cpu: Define attack vectors 2025-07-11 17:55:16 +02:00
cpu_pm.c cpuidle, cpu_pm: Remove RCU fiddling from cpu_pm_{enter,exit}() 2023-01-13 11:48:15 +01:00
crash_core.c crash: Use note name macros 2025-02-10 16:56:58 -08:00
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 crash: fix spelling mistake "crahskernel" -> "crashkernel" 2025-05-11 17:54:10 -07:00
cred.c cred: remove old {override,revert}_creds() helpers 2024-12-02 11:25:09 +01:00
delayacct.c delayacct: remove redundant code and adjust indentation 2025-05-27 19:40:33 -07:00
dma.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
elfcorehdr.c crash: remove dependency of FA_DUMP on CRASH_DUMP 2024-02-23 17:48:22 -08:00
exec_domain.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
exit.c - Avoid a crash on a heterogeneous machine where not all cores support the 2025-06-22 10:11:45 -07:00
exit.h exit: add internal include file with helpers 2023-09-21 12:03:50 -06:00
extable.c context_tracking: Take NMI eqs entrypoints over RCU 2022-07-05 13:32:59 -07:00
fail_function.c kernel/fail_function: fix memory leak with using debugfs_lookup() 2023-02-08 13:36:22 +01:00
fork.c Update for the futex subsystem: 2025-07-29 14:39:42 -07:00
freezer.c sched,freezer: Remove unnecessary warning in __thaw_task 2025-07-17 07:56:50 -10:00
gen_kheaders.sh Revert "kheaders: Ignore silly-rename files" 2025-03-15 21:22:52 +09:00
groups.c groups: Convert group_info.usage to refcount_t 2023-09-29 11:28:39 -07:00
hung_task.c hung_task: show the blocker task if the task is hung on semaphore 2025-05-11 17:54:08 -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 kallsyms: Remove KALLSYMS_ABSOLUTE_PERCPU 2025-02-18 10:16:04 +01:00
kallsyms_internal.h kallsyms: get rid of code for absolute kallsyms 2024-07-20 16:33:21 +09:00
kallsyms_selftest.c kallsyms: Use kthread_run_on_cpu() 2025-01-02 22:12:12 +01:00
kallsyms_selftest.h kallsyms: Add self-test facility 2022-11-15 00:42:02 -08:00
kcmp.c kcmp: improve performance adding an unlikely hint to task comparisons 2025-02-21 10:25:33 +01:00
Kconfig.freezer treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig.hz kernel: Fix "select" wording on HZ_250 description 2025-02-21 09:20:30 +01:00
Kconfig.kexec crashdump: add CONFIG_KEYS dependency 2025-06-25 15:55:04 -07:00
Kconfig.locks locking/rwlock: Provide RT variant 2021-08-17 17:50:51 +02:00
Kconfig.preempt sched: No PREEMPT_RT=y for all{yes,mod}config 2024-11-07 15:25:05 +01:00
kcov.c kcov: mark in_softirq_really() as __always_inline 2024-12-30 17:59:08 -08:00
kexec.c crash: add a new kexec flag for hotplug support 2024-04-23 14:59:01 +10:00
kexec_core.c kexec_core: Drop redundant pm_restore_gfp_mask() call 2025-07-15 14:56:38 +02:00
kexec_elf.c kexec: initialize ELF lowest address to ULONG_MAX 2025-03-16 22:30:47 -07:00
kexec_file.c lib/crypto: sha256: Make library API use strongly-typed contexts 2025-07-04 10:18:53 -07:00
kexec_handover.c hardening updates for v6.17-rc1 2025-07-28 17:16:12 -07:00
kexec_internal.h kexec: add KHO support to kexec file loads 2025-05-12 23:50:40 -07:00
kheaders.c kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO() 2024-12-24 09:46:49 +01:00
kprobes.c kprobes: Use RCU in all users of __module_text_address(). 2025-03-10 11:54:46 +01:00
kstack_erase.c stackleak: Rename stackleak_track_stack to __sanitizer_cov_stack_depth 2025-07-21 21:40:39 -07:00
ksyms_common.c kallsyms: make kallsyms_show_value() as generic function 2023-06-08 12:27:20 -07:00
ksysfs.c kernel/ksysfs.c: simplify bin_attribute definition 2025-01-07 16:59:15 +01:00
kthread.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
latencytop.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
Makefile kstack_erase: Add -mgeneral-regs-only to silence Clang warnings 2025-07-26 14:28:35 -07:00
module_signature.c module: harden ELF info handling 2021-01-19 10:24:45 +01:00
notifier.c reboot: move reboot_notifier_list to kernel/reboot.c 2024-11-05 17:12:31 -08:00
nsproxy.c kernel/nsproxy: remove unnecessary guards 2025-05-09 13:13:54 +02:00
padata.c padata: do not leak refcount in reorder_work 2025-05-19 13:44:16 +08:00
panic.c - The 3 patch series "hung_task: extend blocking task stacktrace dump to 2025-05-31 19:12:53 -07:00
params.c module: ensure that kobject_put() is safe for module type kobjects 2025-05-07 20:24:59 +02:00
pid.c pidfs: persist information 2025-06-19 14:28:24 +02:00
pid_namespace.c pid: Do not set pid_max in new pid namespaces 2025-03-06 10:18:36 +01:00
pid_sysctl.h treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
profile.c profiling: remove profile=sleep support 2024-08-04 13:36:28 -07:00
ptrace.c ptrace: introduce PTRACE_SET_SYSCALL_INFO request 2025-05-11 17:48:15 -07:00
range.c kernel.h: split out min()/max() et al. helpers 2020-10-16 11:11:19 -07:00
reboot.c - The 7 patch series "powerpc/crash: use generic crashkernel 2025-04-01 10:06:52 -07:00
regset.c regset: use kvzalloc() for regset_get_alloc() 2024-04-25 21:07:03 -07:00
relay.c relay: remove unused relay_late_setup_files 2025-05-11 17:54:09 -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 scs: add support for dynamic shadow call stacks 2022-11-09 18:06:35 +00:00
seccomp.c seccomp: avoid the lock trip seccomp_filter_release in common case 2025-02-24 11:17:10 -08:00
signal.c coredump: rename do_coredump() to vfs_coredump() 2025-06-16 17:01:22 +02:00
smp.c stop-machine: Improve documentation 2025-07-29 16:14:07 -07:00
smpboot.c kthread: add kthread_stop_put 2023-10-04 10:41:57 -07:00
smpboot.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
softirq.c lockdep: Fix wait context check on softirq for PREEMPT_RT 2025-03-25 10:46:44 +01:00
stacktrace.c stacktrace: fix kernel-doc typo 2023-12-29 12:22:29 -08:00
static_call.c static_call: Don't make __static_call_return0 static 2022-04-05 09:59:38 +02:00
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 futex: Add basic infrastructure for local task local hash 2025-05-03 12:02:07 +02:00
sys_ni.c Probes updates for v6.11: 2024-07-18 12:19:20 -07:00
sysctl-test.c sysctl: move u8 register test to lib/test_sysctl.c 2025-04-14 14:13:41 +02:00
sysctl.c sparc: mv sparc sysctls into their own file under arch/sparc/kernel 2025-04-09 13:32:16 +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 tsacct: replace strncpy() with strscpy() 2024-07-12 16:39:53 -07:00
ucount.c ucount: use rcuref_t for reference counting 2025-03-16 22:30:50 -07:00
uid16.c fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers 2018-04-02 20:15:59 +02:00
uid16.h kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c 2018-04-02 20:15:30 +02:00
umh.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
up.c smp: Change function signatures to use call_single_data_t 2023-09-13 14:59:24 +02:00
user-return-notifier.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
user.c uidgid: make sure we fit into one cacheline 2024-09-12 12:16:09 +02:00
user_namespace.c uidgid: add map_id_range_up() 2025-02-12 12:12:27 +01:00
usermode_driver.c blob_to_mnt(): kern_unmount() is needed to undo kern_mount() 2022-05-19 23:25:47 -04:00
utsname.c uts: Use generic ns_common::count 2020-08-19 14:13:20 +02:00
utsname_sysctl.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
vhost_task.c vhost_task: fix vhost_task_create() documentation 2025-04-18 10:08:11 -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/hardlockup: move SMP barriers from common code to buddy code 2023-06-19 16:25:28 -07:00
watchdog_perf.c - The 7 patch series "powerpc/crash: use generic crashkernel 2025-04-01 10:06:52 -07:00
workqueue.c workqueue: Initialize wq_isolated_cpumask in workqueue_init_early() 2025-06-17 08:58:29 -10:00
workqueue_internal.h workqueue: Drop the special locking rule for worker->flags and worker_pool->flags 2023-08-07 15:57:22 -10:00