linux-next.git/arch/powerpc/include/asm, branch master

Merge branch 'kexec-next' of ssh://git@gitolite.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux.git

2026-07-20T14:24:55+00:00

Merge branch 'master' of ssh://git@gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip.git

2026-07-20T14:24:51+00:00

Merge branch 'mm-unstable' of ssh://git@gitolite.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-07-20T13:17:35+00:00

# Conflicts: # drivers/gpu/drm/ttm/ttm_backup.c

Merge branch into tip/master: 'core/entry'

2026-07-20T10:06:26+00:00

# New commits in core/entry: 39109e76c19b ("entry, treewide: Make syscall_enter_from_user_mode[_work]() indicate syscall execution") 47076976df17 ("entry: Make return type of syscall_trace_enter() bool") 8bbaa0524675 ("entry: Rework trace_syscall_enter()") ff2b9a905930 ("entry: Rework syscall_audit_enter()") 8383e05af734 ("syscall_user_dispatch: Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCH") 4a3591287fb7 ("entry: Fix seccomp bypass after ptrace with TSYNC") fb419d53f261 ("x86/entry: Simplify the syscall number logic") 1b1f3b3e1b39 ("x86/entry: Get rid of the sys_ni_syscall() indirection") 2b341c74dbf8 ("x86/entry: Make syscall functions static") 622f04e97415 ("ptrace, treewide: Rename ptrace_report_syscall_entry() to ptrace_report_syscall_permit_entry()") 7ba2ba74713c ("seccomp, treewide: Rename and convert __secure_computing() to return boolean") 8af25d0a2e46 ("entry: Use syscall number instead of rereading it") bad2a27ba8c4 ("entry: Remove syscall_enter_from_user_mode()") 9d311796e2ce ("x86/syscall: Use [syscall_]enter_from_user_mode_randomize_stack()") 05a194d8bd00 ("s390/syscall: Use enter_from_user_mode_randomize_stack()") d023abfbc4dc ("riscv/syscall: Use syscall_enter_from_user_mode_randomize_stack()") 3b2b9c0198bb ("powerpc/syscall: Use syscall_enter_from_user_mode_randomize_stack()") 7892c5a22a4e ("loongarch/syscall: Use syscall_enter_from_user_mode_randomize_stack()") 855c103f8627 ("entry: Provide [syscall_]enter_from_user_mode_randomize_stack()") 0b9a3057530c ("randomize_kstack: Provide add_random_kstack_offset_irqsoff()") 89d163dd9dac ("powerpc: Move stack randomization after syscall_enter_from_user_mode()") 5b6e32ba7b59 ("syscall_user_dispatch: Add kernel.syscall_user_dispatch sysctl") ee935e8dc757 ("syscall_user_dispatch: Make it configurable in Kconfig") Signed-off-by: Ingo Molnar

mm: decouple protnone helpers from CONFIG_NUMA_BALANCING

2026-07-20T06:51:45+00:00

Patch series "userfaultfd: working set tracking for VM guest memory", v10. This series adds userfaultfd support for tracking the working set of VM guest memory, so a VMM can identify hot pages and reclaim cold ones to tiered or remote storage. This patch (of 15): pte_protnone() and pmd_protnone() detect present-but-inaccessible page table entries. This capability is useful beyond NUMA balancing -- for example, userfaultfd working set tracking uses protnone PTEs to track page access without unmapping pages. Introduce CONFIG_ARCH_HAS_PTE_PROTNONE to decouple the protnone PTE infrastructure from CONFIG_NUMA_BALANCING. The six architectures that support protnone PTEs (x86_64, arm64, powerpc, s390, riscv, loongarch) now select this option, and CONFIG_NUMA_BALANCING depends on it. No functional change -- the same set of architectures continues to have working protnone support, but the infrastructure is now available independently of NUMA balancing. Link: https://lore.kernel.org/20260708111417.173443-1-kirill@shutemov.name Link: https://lore.kernel.org/20260708111417.173443-2-kirill@shutemov.name Signed-off-by: Kiryl Shutsemau (Meta) Assisted-by: Claude:claude-opus-4-6 Acked-by: SeongJae Park Acked-by: Mike Rapoport (Microsoft) Cc: Andrea Arcangeli Cc: David Hildenbrand Cc: James Houghton Cc: Jonathan Corbet Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Paolo Bonzini Cc: Peter Xu Cc: Sean Christopherson Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: Zi Yan Signed-off-by: Andrew Morton

mm: rename ARCH_ENABLE_THP_MIGRATION to ARCH_HAS_PMD_SOFTLEAVES

2026-07-20T06:51:03+00:00

CONFIG_ARCH_ENABLE_THP_MIGRATION gates PMD-level migration entries. PMD-level device-private entries use the same migration mechanism and therefore require the same architecture support. Upcoming PMD-level swap entries can use the same PMD softleaf helpers without depending on page migration, so rename the architecture gate to CONFIG_ARCH_HAS_PMD_SOFTLEAVES. This describes the PMD entry capability rather than one current user of it. This is a pure rename: the set of selecting architectures (x86, arm64, s390, riscv, loongarch, and powerpc on PPC_BOOK3S_64) and the gating semantics are unchanged. No functional change intended. Link: https://lore.kernel.org/20260706114320.1643046-7-usama.arif@linux.dev Signed-off-by: Usama Arif Reviewed-by: Zi Yan Acked-by: David Hildenbrand (Arm) Cc: Alexandre Ghiti Cc: Baolin Wang Cc: Baoquan He Cc: Barry Song Cc: Chris Li Cc: Dev Jain Cc: "Huang, Ying" Cc: Johannes Weiner Cc: Kairui Song Cc: Kemeng Shi Cc: Kiryl Shutsemau Cc: Lance Yang Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Matthew Wilcox (Oracle) Cc: Nhat Pham Cc: Nico Pache Cc: Rik van Riel Cc: Ryan Roberts Cc: Shakeel Butt Cc: Vlastimil Babka Signed-off-by: Andrew Morton

powerpc: Remove dead non-preemption code

2026-07-15T02:34:13+00:00

Since commit 7dadeaa6e851 ("sched: Further restrict the preemption modes"), powerpc always has CONFIG_PREEMPTION because only CONFIG_PREEMPT and CONFIG_PREEMPT_LAZY are possible, even in dynamic preemption mode (see sched_dynamic_mode). As a consequence, need_irq_preemption() is always true and can be removed. And because commit bee25f97ad24 ("powerpc: Enable GENERIC_ENTRY feature") includes linux/irq-entry-common.h which already declares sk_dynamic_irqentry_exit_cond_resched static key, asm/preempt.h becauses useless and can be removed. Signed-off-by: Christophe Leroy (CS GROUP) Reviewed-by: Shrikanth Hegde Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/2bf10a0afffefb6aca44bf2f864cc17471a80e31.1781870889.git.chleroy@kernel.org

powerpc/uaccess: correct check for CONFIG_PPC_E500 in mask_user_address()

2026-07-15T02:34:13+00:00

mask_user_address() incorrectly checks for CONFIG_E500 instead of CONFIG_PPC_E500, causing mask_user_address_isel() to not be used on E500 hardware. Fix the check to use the correct name. Fixes: 861574d51bbd ("powerpc/uaccess: Implement masked user access") Cc: stable@vger.kernel.org # 7.0+ Signed-off-by: Ethan Nelson-Moore Fixes: 861574d51bbd ("powerpc/uaccess: Implement masked user access") Reviewed-by: Christophe Leroy (CS GROUP) Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20260615233729.29386-1-enelsonmoore@gmail.com

syscall_user_dispatch: Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCH

2026-07-14T14:34:07+00:00

Currently, 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, which creates a false impression of feature support. Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCH to decouple this mechanism from GENERIC_ENTRY. Select it exclusively on x86 and remove the redundant stub 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

powerpc/kexec_file: Use crash_exclude_core_ranges() helper

2026-06-30T15:49:06+00:00

The crash memory exclude of crashk_res and crashk_cma memory on powerpc are almost identical to the generic crash_exclude_core_ranges(). By introducing the architecture-specific arch_crash_exclude_mem_range() function with a default implementation of crash_exclude_mem_range(), and using crash_exclude_mem_range_guarded as powerpc's separate implementation, the generic crash_exclude_core_ranges() helper function can be reused. Cc: Andrew Morton Cc: Hari Bathini Cc: Madhavan Srinivasan Cc: Mahesh Salgaonkar Cc: Michael Ellerman Cc: Ritesh Harjani (IBM) Cc: Shivang Upadhyay Acked-by: Breno leitao Acked-by: Baoquan He Reviewed-by: Sourabh Jain Acked-by: Mike Rapoport (Microsoft) Signed-off-by: Jinjie Ruan Link: https://patch.msgid.link/20260629094746.191843-9-ruanjinjie@huawei.com Signed-off-by: Mike Rapoport (Microsoft)