Changes in Kconfig

cb95904b470d2d347012d5e360303cf478ca5362 - Merge tag 'sched-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Wed, 21 Oct 2026 00:35:35 +0200

Merge tag 'sched-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipPull scheduler updates from Ingo Molnar: "Kconfig updates: - Simplify PREEMPT_DYNAMIC (Mark Rutland) Fair scheduler updates: - Remove redundant RUN_TO_PARITY check (Elif Topuz) - Declare augmented callbacks per field, fix rb_add_augmented_cached() descent (Yiwei Lin, Peter Zijlstra) - Restart fair hrtick after same-task repicks (Shubhang Kaushik) - Improve the scheduling latency of short slice tasks (Vincent Guittot) Deadline/RT scheduler updates: - Check start_dl_timer expiry with ktime_before() (Liang Hao) - irq_work: CPU-hotplug improvements on PREEMPT_RT (Sebastian Andrzej Siewior) Energy-aware scheduling updates: - Implement the steal_governor, introduce preferred CPUs and steal-driven vCPU backoff (Shrikanth Hegde) Multi-processor load-balancing updates: - Enable preferred SMT siblings on NVIDIA Olympus (Andrea Righi) - Randomize equally shallow idle CPU picks (Christian Loehle) - Remove redundant core_sched_seq (Hui Su) Cache-aware scheduling updates: - Avoid publishing partial LLC utilization (Jemmy Wong) NUMA-balancing updates: - Reset NUMA fault locality after scan period update (Eric Kim) Proxy execution updates: - Ongoing work to implement sleeping owner handling for proxy execution (John Stultz, Vasily Gorbik) - Preparatory steps to make sched_ext compatible with proxy execution (Andrea Righi) Scheduler infrastructure updates & fixes: - Remove the RCU wait from PSI trigger destruction (Shakeel Butt) - Avoid modifying wait-entry on failed priority registration (Hui Su) - Use the new static key API for sched_feat (Hongyan Xia) - Convert paravirt_steal to new static key APIs (Hongyan Xia) - cputime: Don't account idle time twice after dyntick-idle (Stian Halseth) Scheduler debugging updates: - Set TIF_NEED_RESCHED before calling __trace_set_need_resched() (Sechang Lim) - Fix context analysis errors in non-preferred CPU push (Shrikanth Hegde) Misc cleanups and fixes by Christian Loehle, Shubhang Kaushik, Thomas Huth and Vladimir Zapolskiy"* tag 'sched-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits) sched: Replace nr_iowait_cpu() with a bool accessor Revert "sched/fair: Remove dead code on enqueue_task_fair()" sched/cache: Avoid publishing partial LLC utilization sched/cputime: Don't account idle time twice after dyntick-idle sched/psi: Remove the RCU wait from trigger destruction sched/eevdf: Remove redundant RUN_TO_PARITY check sched/wait: Avoid modifying entry on failed priority registration rbtree_test: Use rb_add_augmented_cached() for the cached augmented test rbtree: Update augmented data on the way down in rb_add_augmented_cached() rbtree: Declare augmented callbacks per field with RB_AUG() rbtree_test: Use rb_add() and rb_add_cached() for the basic tests smpboot: Don't park the thread if work is pending irq_work: Flush lazy work CPU down on PREEMPT_RT irq_work: Update a comment regarding CPU hotplug invocation sched/topology: Add asymmetric SMT packing override sched/fair: Honor asymmetric SMT priority in idle selection sched: Set TIF_NEED_RESCHED before calling __trace_set_need_resched() sched/core: Fix context analysis errors in non-preferred CPU push virt/steal_governor: Enable the driver virt/steal_governor: Implement steal_governor policy loop ... List of files: /linux/arch/Kconfig

5b9a28eeed37513778ca6b636253aa8dcf39d55f - sched: dynamic: Remove HAVE_PREEMPT_DYNAMIC_{CALL,KEY}

Mon, 03 Aug 2026 21:17:30 +0200

sched: dynamic: Remove HAVE_PREEMPT_DYNAMIC_{CALL,KEY}PREEMPT_DYNAMIC is now limited to the FULL and LAZY preemption models.Switching model only changes the behaviour of dynamic_preempt_lazy(),which uses a static key. There are no other static calls or static keys,and so there's no need for HAVE_PREEMPT_DYNAMIC_CALL orHAVE_PREEMPT_DYNAMIC_KEY.The static key used by dynamic_preempt_lazy() is entirely local tokernel/sched/core.c, and any architecture which selectsARCH_HAS_PREEMPT_LAZY implements the necessary support. RemovePREEMPT_DYNAMIC's dependencies on HAVE_PREEMPT_DYNAMIC_CALL andHAVE_PREEMPT_DYNAMIC_KEY entirely, leaving the dependency onARCH_HAS_PREEMPT_LAZY.For architectures which previously selected HAVE_PREEMPT_DYNAMIC_KEY,PREEMPT_DYNAMIC will now be selected by default, matching x86. As theruntime impact is limited to dynamic_preempt_lazy(), this shouldn't beas concerning as previously (e.g. where calls to {cond,might}_resched()stubs could introduce a measurable penalty).As all of this can work without jump labels, JUMP_LABEL is not selectedexplicitly. It is obviously preferable to have JUMP_LABEL enabled, butthis is not functionally necessary.Signed-off-by: Mark Rutland Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Jinjie Ruan Reviewed-by: Shrikanth Hegde Tested-by: Mete Durlu Tested-by: Shrikanth Hegde Tested-by: Jinjie Ruan Link: https://patch.msgid.link/20260803191731.3244294-6-mark.rutland@arm.com List of files: /linux/arch/Kconfig

67f8bc848ee31831336bd478e57d2f993551902e - Merge drm/drm-fixes into drm-misc-fixes

Tue, 01 Sep 2026 09:38:51 +0200

Merge drm/drm-fixes into drm-misc-fixesLet's start the 7.3 drm-misc-fixes cycle.Signed-off-by: Maxime Ripard List of files: /linux/arch/Kconfig

b2128290c29902315e632ea59e0504d6bc9e9b42 - Merge remote-tracking branch 'drm/drm-next' into msm-next-backmerge

Sat, 18 Jul 2026 17:06:55 +0200

Merge remote-tracking branch 'drm/drm-next' into msm-next-backmergeBackmerge of drm-next, mainly to pick up dt bindings docs updates toavoid conflicts.Signed-off-by: Rob Clark List of files: /linux/arch/Kconfig

637315cb400eed1dbe721954fea437a61a2d65b2 - Merge tag 'kvm-riscv-7.3-1' of https://github.com/kvm-riscv/linux into HEAD

Tue, 18 Aug 2026 13:07:31 +0200

Merge tag 'kvm-riscv-7.3-1' of https://github.com/kvm-riscv/linux into HEADKVM/riscv changes for 7.3- Svadu/Zicfiss/Zicfilp FWFT support for Guest- Use try_cmpxchg for IMSIC MRIF RMW- More arch-specific tracepoints in KVM RISC-V- Eager Page Splitting for KVM RISC-V- Optimize hfence request handling for SMP Guests- Improve dirty log clearing by skipping zero bits in mask- Guard HFENCE range loops against overflow- CPU PM notifiers in KVM RISC-V for non-retentive idle states- Fix kernel-mode vector context save/restore for Guest List of files: /linux/arch/Kconfig

efe86f088f48f18c27b648e5724048947f3b7fb4 - Merge drm/drm-next into drm-xe-next

Tue, 14 Jul 2026 15:40:31 +0200

Merge drm/drm-next into drm-xe-nextSync some i915/display changesSigned-off-by: Rodrigo Vivi List of files: /linux/arch/Kconfig

6d177908bad5992e17669030db41caab88041d5e - Merge drm/drm-next into drm-intel-next

Tue, 30 Jun 2026 14:55:43 +0200

Merge drm/drm-next into drm-intel-nextSync with v7.2-rc1.Signed-off-by: Jani Nikula List of files: /linux/arch/Kconfig

827b9aabd3ea3e96d5e48abed9f44dbd1e550d4e - Merge drm/drm-next into drm-misc-next

Tue, 30 Jun 2026 10:16:00 +0200

Merge drm/drm-next into drm-misc-nextBackmerging to get drm-misc-next to v7.2-rc1.Signed-off-by: Thomas Zimmermann List of files: /linux/arch/Kconfig

7dd19adaaac9a161723a24de7c270861063ec6ac - Merge tag 'v7.2-rc1' into drm-rust-next

Sun, 28 Jun 2026 22:39:43 +0200

Merge tag 'v7.2-rc1' into drm-rust-nextMerge v7.2-rc1 into drm-rust-next to start the next cycle.Devres now requires T: 'static, which conflicts with shmem::Object usingDevres> without that bound. Resolve by adding 'staticas a supertrait to DriverObject and DeviceContext, which does notrestrict any current use cases since DriverObject is always implementedon owned, refcounted types and DeviceContext is a sealed marker traitwith only unit-type implementors.If DriverObject (or DeviceContext) ever becomes lifetime-parameterized(e.g. via a GAT for TTM backed objects), the 'static supertrait can berelaxed at that point.Signed-off-by: Danilo Krummrich List of files: /linux/arch/Kconfig

104a813376837da3b9651457d6fdc99596257fba - Merge tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Wed, 19 Aug 2026 01:56:25 +0200

Merge tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipPull VDSO updates from Thomas Gleixner: - Consolidate the VDSO datastore further and provide support for mlock_all() and prefaulting. - Provide 32-bit legacy time related functionality only if CONFIG_COMPAT_32BIT_TIME is enabled. The config switch exists, but architecture code still exposes the legacy functionality even disabled. Clean this up by adding the missing guards and validating at build time that the VDSO is legacy free if disabled. - Consolidate the VDSO related config options in core and drivers, which removes some non-sensical dependencies and quite an amount of #ifdeffery. - Clean up the PAGE_SIZE definition maze* tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) random: vDSO: Drop custom PAGE_SIZE definitions LoongArch: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/timer-riscv: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/arm_arch_timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/mips-gic-timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery MIPS: csrc-r4k: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery vDSO: Make clockmode constants available without CONFIG_GENERIC_GETTIMEOFDAY kbuild: Support generated asm-headers in subdirectories vdso: Rename HAVE_GENERIC_VDSO to VDSO_DATASTORE vdso: Drop HAVE_GENERIC_VDSO from architecture kconfig files vdso: Automatically select HAVE_GENERIC_VDSO if necessary MIPS: vdso: Stop using CONFIG_HAVE_GENERIC_VDSO vdso: Remove the dependency on HAVE_GENERIC_VDSO from ARCH_HAS_VDSO_ARCH_DATA futex: Remove dependency on HAVE_GENERIC_VDSO from FUTEX_ROBUST_UNLOCK vdso/gettimeofday: Verify COMPAT_32BIT_TIME interactions sparc: vdso: Respect COMPAT_32BIT_TIME MIPS: VDSO: Respect COMPAT_32BIT_TIME powerpc/vdso: Respect COMPAT_32BIT_TIME ARM: VDSO: Respect COMPAT_32BIT_TIME arm64: vdso32: Respect COMPAT_32BIT_TIME ... List of files: /linux/arch/Kconfig

030c9f813b8e48d2b066983c94cf6294968f9496 - Merge tag 'timers-cleanups-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Wed, 19 Aug 2026 00:58:29 +0200

Merge tag 'timers-cleanups-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipPull treewide timer related cleanups from Thomas Gleixner: - Remove the leftover CLOCK_TICK_RATE which has been scheduled for removal more than a decade ago along with some now empty asm/timex.h files. - Consolidate delay timer calibration The construct of having a define in a header requires that architectures provided asm/timex.h for no reason. Also the function name for reading the delay timer is confusing at best. Use a config switch to enable that functionality and rename the function to delay_read_timer() to make the purpose clear. This removes some more now empty asm/timex.h files as well.* tag 'timers-cleanups-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: calibrate: Rework delay timer calibration treewide: Remove CLOCK_TICK_RATE x86: Use PIT_TICK_RATE instead of CLOCK_TICK_RATE List of files: /linux/arch/Kconfig

3424d8c18a7da1010d03391a22e728b857d0d5c5 - Merge tag 'core-entry-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Wed, 19 Aug 2026 00:00:56 +0200

Merge tag 'core-entry-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipPull generic entry code updates from Thomas Gleixner: - Make syscall user dispatching configurable Not all architectures can makes use of syscall user dispatching. Allow them to disable the feature completely. - Consolidate stack randomization for the generic entry code and the architectures using it. Stack randomization on syscall entry was sprinkled throughout the architecture specific low level entry code and in some cases at the wrong points, e.g. before establishing state, which violates the non-instrumentable constraints of that code. Clean this up by integrating stack randomization into the generic entry code helpers so that it is invoked at the earliest possible point right after establishing state and converting all generic entry code using architecture over. - Clean up the syscall number handling in the generic entry code. It works correctly for architectures which have a separate return value storage in pt_regs, but fails to distinguish the case where user space handed in -1 as syscall number from the case where the entry code rejects it by returning -1 to the callers. Aside of that the return value functionality of those interfaces is not really intuitive. Fix this by separating the decision to reject a syscall (user dispatch, ptrace, seccomp ...) from the potential modification of the syscall number through these mechanisms. This solves most of the problems for architectures which do not have a separate return value storage in pt_regs except for the case where a tracepoint has a BPF script or a probe attached which overwrite both the syscall number and the return value. But that's a problem which cannot be solved in the generic code, that only can be addressed by separating the storage model in the affected architectures.* tag 'core-entry-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) entry, treewide: Make syscall_enter_from_user_mode[_work]() indicate syscall execution entry: Make return type of syscall_trace_enter() bool entry: Rework trace_syscall_enter() entry: Rework syscall_audit_enter() syscall_user_dispatch: Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCH entry: Fix seccomp bypass after ptrace with TSYNC x86/entry: Simplify the syscall number logic x86/entry: Get rid of the sys_ni_syscall() indirection x86/entry: Make syscall functions static ptrace, treewide: Rename ptrace_report_syscall_entry() to ptrace_report_syscall_permit_entry() seccomp, treewide: Rename and convert __secure_computing() to return boolean entry: Use syscall number instead of rereading it entry: Remove syscall_enter_from_user_mode() x86/syscall: Use [syscall_]enter_from_user_mode_randomize_stack() s390/syscall: Use enter_from_user_mode_randomize_stack() riscv/syscall: Use syscall_enter_from_user_mode_randomize_stack() powerpc/syscall: Use syscall_enter_from_user_mode_randomize_stack() loongarch/syscall: Use syscall_enter_from_user_mode_randomize_stack() entry: Provide [syscall_]enter_from_user_mode_randomize_stack() randomize_kstack: Provide add_random_kstack_offset_irqsoff() ... List of files: /linux/arch/Kconfig

0eaed89c18aeedf0898baf2dbf5ff027c6795152 - Merge tag 'timers-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource

Mon, 17 Aug 2026 10:29:52 +0200

Merge tag 'timers-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource - Use designated initializers for sh_mtu2, sh_cmt, and sh_tmu, and drop the unused initializer in the platform_device_id table for sh_mtu2 (Uwe Kleine-König) - Remove redundant dev_err()/dev_err_probe() messages when devm_request_*_irq() fails, as the helper already logs an error message (Pan Chuang) - Fix a boot hang on Allwinner D1 when a forced minimum delta is used with the sun4i timer (Felix Yan) - Fix an IRQ leak in the cpuhp_setup_state() error path by freeing the IRQ on failure in the NXP PIT driver (WenTao Liang) - Fix incorrect unmapping of shared MMIO between the clocksource and clockevent drivers. If one of them fails to initialize, the error path unmaps the shared MMIO region, leaving the other driver with an invalid mapping on clps711x (Guangshuo Li) - Make the samsung_pwm driver compatible with PREEMPT_RT by replacing regular spinlocks with raw_spinlock_t in atomic contexts (Marek Szyprowski) - Use __raw_readl() and __raw_writel() instead of ioread32() and iowrite32() to support SWAP_IO_SPACE in the rtl-otto driver (Rustam Adilov) - Fix a missing clk_disable_unprepare() call in the timer initialization error path of the Armada driver (Yuho Choi)Link: https://lore.kernel.org/lkml/75feea31-683d-45a1-87f4-ab045e0152ae@oss.qualcomm.com List of files: /linux/arch/Kconfig

b4d85f863e5a6f1fa01b186001af0f68f4f5239e - Merge branch 'next' into for-linus

Sat, 15 Aug 2026 06:26:07 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.3 merge window. List of files: /linux/arch/Kconfig

dfc256dac54c8b692110bf905c64cb130e15963d - calibrate: Rework delay timer calibration

Fri, 10 Apr 2026 14:18:57 +0200

calibrate: Rework delay timer calibrationThe header define in asm/timex,h and the naming of the function to read thedelay timer are confusing at best.Convert it to a config switch selected by the archictures which provide thefunctionality and rename the function to delay_read_timer(), which makesthe purpose clear. Move the declaration to linux/delay.h where it belongs.Remove the resulting empty asm/timex.h files as well.No functional change.Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20260410120317.978403520@kernel.org List of files: /linux/arch/Kconfig

a92426375870190ae0088e93c3cbbcf4baf3c705 - vdso: Remove the dependency on HAVE_GENERIC_VDSO from ARCH_HAS_VDSO_ARCH_DATA

Thu, 09 Jul 2026 09:28:38 +0200

vdso: Remove the dependency on HAVE_GENERIC_VDSO from ARCH_HAS_VDSO_ARCH_DATAAlign ARCH_HAS_VDSO_ARCH_DATA with ARCH_HAS_VDSO_TIME_DATA, making itselectable even without HAVE_GENERIC_VDSO.It will only have an effect when HAVE_GENERIC_VDSO is enabled anyways,but this makes the architecture Kconfig files a bit simpler.Signed-off-by: Thomas Weißschuh Signed-off-by: Thomas Gleixner Reviewed-by: Vincenzo Frascino Link: https://patch.msgid.link/20260709-vdso-have_generic_vdso-v1-2-d2e1061f268b@linutronix.de List of files: /linux/arch/Kconfig

8383e05af734355ba5cdd348991eaa71f6003e71 - syscall_user_dispatch: Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCH

Mon, 13 Jul 2026 05:54:22 +0200

syscall_user_dispatch: Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCHCurrently, only x86 genuinely implements and supports Syscall User Dispatch(SUD).Multiple architectures provide a stub arch_syscall_is_vdso_sigreturn()returning 'false' simply to satisfy GENERIC_ENTRY compilation, whichcreates a false impression of feature support.Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCH to decouple this mechanismfrom GENERIC_ENTRY. Select it exclusively on x86 and remove the redundantstub functions from other architectures.Suggested-by: Mark Rutland Signed-off-by: Jinjie Ruan Signed-off-by: Thomas Gleixner Reviewed-by: Thomas Weißschuh Link: https://patch.msgid.link/20260713035422.582771-1-ruanjinjie@huawei.com List of files: /linux/arch/Kconfig

76904fccf81936c084faebc73ac72c0919a42941 - Merge tag 'v7.2-rc3' into next

Tue, 14 Jul 2026 04:06:00 +0200

Merge tag 'v7.2-rc3' into nextSync up with mainline to pull in stable fixes to avoid merge conflicts. List of files: /linux/arch/Kconfig

7ba2ba74713c83408cc942b60dd869ab2c34c84f - seccomp, treewide: Rename and convert __secure_computing() to return boolean

Tue, 07 Jul 2026 21:06:40 +0200

seccomp, treewide: Rename and convert __secure_computing() to return booleanThe return value of __secure_computing() currently uses 0 to indicatethat a system call should be allowed, and -1 to indicate that it shouldbe blocked/killed. This 0/-1 pattern is non-intuitive for a securitycheck function and makes the control flow at the call sites less readable.Furthermore, any potential future changes to these return values wouldrequire a high-risk, error-prone audit of all its users across differentarchitectures.Sanitize this logic by converting the return type of __secure_computing()to a proper boolean, where 'true' explicitly means 'allow' and 'false'means 'fail/deny'.Update all the two dozen or so call sites across the tree to align withthis new boolean semantic. No functional changes are intended, as thecallers still return -1 to the lower-level assembly entry code uponseccomp denial.Rename the function to __seccomp_permit_syscall() so that the purpose isentirely clear.[ tglx: Rename the function ]Suggested-by: Thomas Gleixner Suggested-by: Mark Rutland Signed-off-by: Jinjie Ruan Signed-off-by: Thomas Gleixner Tested-by: Mukesh Kumar Chaurasiya (IBM) Reviewed-by: Mukesh Kumar Chaurasiya (IBM) Acked-by: Oleg Nesterov Link: https://patch.msgid.link/20260707190254.230735780@kernel.org List of files: /linux/arch/Kconfig

ee935e8dc757614006ac29a7d98a15882cdcaeb2 - syscall_user_dispatch: Make it configurable in Kconfig

Mon, 06 Jul 2026 16:00:18 +0200

syscall_user_dispatch: Make it configurable in KconfigSyscall User Dispatch is presently built under CONFIG_GENERIC_SYSCALL andcannot be disabled independently.Add CONFIG_SYSCALL_USER_DISPATCH to make it an optional feature.Signed-off-by: Gregory Price Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20260706140020.873735-2-gourry@gourry.net List of files: /linux/arch/Kconfig