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from b97d64c72259 Merge tag '6.6-rc-smb3-client-fixes-part1' of git://git.sa [...] new 2f0584f3f4bd mm: Rename arch pte_mkwrite()'s to pte_mkwrite_novma() new 6ecc21bb432d mm: Move pte/pmd_mkwrite() callers with no VMA to _novma() new 161e393c0f63 mm: Make pte_mkwrite() take a VMA new 592b5fad1677 mm: Re-introduce vm_flags to do_mmap() new fb47a799cc5c mm: Move VM_UFFD_MINOR_BIT from 37 to 38 new 18e66b695e78 x86/shstk: Add Kconfig option for shadow stack new 2da5b91fe409 x86/traps: Move control protection handler to separate file new 701fb66d576e x86/cpufeatures: Add CPU feature flags for shadow stacks new a956efc09b10 x86/mm: Move pmd_write(), pud_write() up in the file new fca4d413c5f7 x86/mm: Introduce _PAGE_SAVED_DIRTY new 1f6f66f62e8c x86/mm: Update ptep/pmdp_set_wrprotect() for _PAGE_SAVED_DIRTY new bb3aadf7d446 x86/mm: Start actually marking _PAGE_SAVED_DIRTY new f788b71768ff x86/mm: Remove _PAGE_DIRTY from kernel RO pages new 54007f818206 mm: Introduce VM_SHADOW_STACK for shadow stack memory new fd5439e0c97b x86/mm: Check shadow stack page fault errors new 0266e7c53647 mm: Add guard pages around a shadow stack. new e5136e876581 mm: Warn on shadow stack memory in wrong vma new ae1f05a617dc x86/mm: Warn if create Write=0,Dirty=1 with raw prot new 00547ef73ff2 mm/mmap: Add shadow stack pages to memory accounting new 29f890d1050f x86/mm: Introduce MAP_ABOVE4G new b497e52ddb2a x86/mm: Teach pte_mkwrite() about stack memory new 6beb99580bc0 mm: Don't allow write GUPs to shadow stack memory new 1eb2b7841c37 Documentation/x86: Add CET shadow stack description new 8970ef027b21 x86/fpu/xstate: Introduce CET MSR and XSAVES supervisor states new 6ee836687a3f x86/fpu: Add helper for modifying xstate new 98cfa4630912 x86: Introduce userspace API for shadow stack new a5f6c2ace997 x86/shstk: Add user control-protection fault handler new 2d39a6add422 x86/shstk: Add user-mode shadow stack support new b2926a36b97a x86/shstk: Handle thread shadow stack new 928054769dbd x86/shstk: Introduce routines modifying shstk new 05e36022c054 x86/shstk: Handle signals for shadow stack new b93d6c78829a x86/shstk: Check that SSP is aligned on sigreturn new 7fad2a432cd3 x86/shstk: Check that signal frame is shadow stack mem new c35559f94ebc x86/shstk: Introduce map_shadow_stack syscall new 1d62c65372ab x86/shstk: Support WRSS for userspace new 0ee44885fe9c x86: Expose thread features in /proc/$PID/status new 488af8ea7131 x86/shstk: Wire in shadow stack interface new 0dc2a76092d9 x86/cpufeatures: Enable CET CR4 bit for shadow stack new 81f30337ef4f selftests/x86: Add shadow stack test new 2fab02b25ae7 x86: Add PTRACE interface for shadow stack new 680ed2f15e70 x86/shstk: Add ARCH_SHSTK_UNLOCK new 67840ad0fa14 x86/shstk: Add ARCH_SHSTK_STATUS new 87f0df782889 x86/shstk: Move arch detail comment out of core mm new 54acee601b87 x86/kbuild: Fix Documentation/ reference new c6b53dcec07c x86/shstk: Don't retry vm_munmap() on -EINTR new c6cfcbd8ca43 x86/ibt: Convert IBT selftest to asm new 1fe428d3692f x86/shstk: Change order of __user in type new df57721f9a63 Merge tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/ [...]

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Summary of changes: Documentation/arch/x86/index.rst | 1 + Documentation/arch/x86/shstk.rst | 179 +++++ Documentation/filesystems/proc.rst | 1 + Documentation/mm/arch_pgtable_helpers.rst | 12 +- arch/Kconfig | 8 + arch/alpha/include/asm/pgtable.h | 2 +- arch/arc/include/asm/hugepage.h | 2 +- arch/arc/include/asm/pgtable-bits-arcv2.h | 2 +- arch/arm/include/asm/pgtable-3level.h | 2 +- arch/arm/include/asm/pgtable.h | 2 +- arch/arm/kernel/signal.c | 2 +- arch/arm64/include/asm/pgtable.h | 4 +- arch/arm64/kernel/signal.c | 2 +- arch/arm64/kernel/signal32.c | 2 +- arch/arm64/mm/trans_pgd.c | 4 +- arch/csky/include/asm/pgtable.h | 2 +- arch/hexagon/include/asm/pgtable.h | 2 +- arch/ia64/include/asm/pgtable.h | 2 +- arch/loongarch/include/asm/pgtable.h | 4 +- arch/m68k/include/asm/mcf_pgtable.h | 2 +- arch/m68k/include/asm/motorola_pgtable.h | 2 +- arch/m68k/include/asm/sun3_pgtable.h | 2 +- arch/microblaze/include/asm/pgtable.h | 2 +- arch/mips/include/asm/pgtable.h | 6 +- arch/nios2/include/asm/pgtable.h | 2 +- arch/openrisc/include/asm/pgtable.h | 2 +- arch/parisc/include/asm/pgtable.h | 2 +- arch/powerpc/include/asm/book3s/32/pgtable.h | 2 +- arch/powerpc/include/asm/book3s/64/pgtable.h | 4 +- arch/powerpc/include/asm/nohash/32/pgtable.h | 4 +- arch/powerpc/include/asm/nohash/32/pte-8xx.h | 4 +- arch/powerpc/include/asm/nohash/64/pgtable.h | 2 +- arch/riscv/include/asm/pgtable.h | 6 +- arch/s390/Kconfig | 1 + arch/s390/include/asm/hugetlb.h | 2 +- arch/s390/include/asm/pgtable.h | 4 +- arch/s390/mm/pageattr.c | 4 +- arch/sh/include/asm/pgtable_32.h | 4 +- arch/sparc/include/asm/pgtable_32.h | 2 +- arch/sparc/include/asm/pgtable_64.h | 6 +- arch/sparc/kernel/signal32.c | 2 +- arch/sparc/kernel/signal_64.c | 2 +- arch/um/include/asm/pgtable.h | 2 +- arch/x86/Kconfig | 24 + arch/x86/Kconfig.assembler | 5 + arch/x86/entry/syscalls/syscall_64.tbl | 1 + arch/x86/include/asm/cpufeatures.h | 2 + arch/x86/include/asm/disabled-features.h | 16 +- arch/x86/include/asm/fpu/api.h | 9 + arch/x86/include/asm/fpu/regset.h | 7 +- arch/x86/include/asm/fpu/sched.h | 3 +- arch/x86/include/asm/fpu/types.h | 16 +- arch/x86/include/asm/fpu/xstate.h | 6 +- arch/x86/include/asm/idtentry.h | 2 +- arch/x86/include/asm/mmu_context.h | 2 + arch/x86/include/asm/pgtable.h | 302 +++++++- arch/x86/include/asm/pgtable_types.h | 44 +- arch/x86/include/asm/processor.h | 8 + arch/x86/include/asm/shstk.h | 38 + arch/x86/include/asm/special_insns.h | 13 + arch/x86/include/asm/tlbflush.h | 3 +- arch/x86/include/asm/trap_pf.h | 2 + arch/x86/include/asm/traps.h | 15 +- arch/x86/include/uapi/asm/mman.h | 4 + arch/x86/include/uapi/asm/prctl.h | 12 + arch/x86/kernel/Makefile | 5 + arch/x86/kernel/cet.c | 131 ++++ arch/x86/kernel/cpu/common.c | 35 +- arch/x86/kernel/cpu/cpuid-deps.c | 1 + arch/x86/kernel/cpu/proc.c | 23 + arch/x86/kernel/fpu/core.c | 54 +- arch/x86/kernel/fpu/regset.c | 81 +++ arch/x86/kernel/fpu/xstate.c | 90 ++- arch/x86/kernel/ibt_selftest.S | 17 + arch/x86/kernel/idt.c | 2 +- arch/x86/kernel/process.c | 21 +- arch/x86/kernel/process_64.c | 8 + arch/x86/kernel/ptrace.c | 12 + arch/x86/kernel/shstk.c | 550 +++++++++++++++ arch/x86/kernel/signal.c | 1 + arch/x86/kernel/signal_32.c | 2 +- arch/x86/kernel/signal_64.c | 8 +- arch/x86/kernel/sys_x86_64.c | 6 +- arch/x86/kernel/traps.c | 87 --- arch/x86/mm/fault.c | 22 + arch/x86/mm/pat/set_memory.c | 4 +- arch/x86/mm/pgtable.c | 40 ++ arch/x86/xen/enlighten_pv.c | 2 +- arch/x86/xen/mmu_pv.c | 2 +- arch/x86/xen/xen-asm.S | 2 +- arch/xtensa/include/asm/pgtable.h | 2 +- fs/aio.c | 2 +- fs/proc/array.c | 6 + fs/proc/task_mmu.c | 3 + include/asm-generic/hugetlb.h | 2 +- include/linux/mm.h | 47 +- include/linux/mman.h | 4 + include/linux/pgtable.h | 28 + include/linux/proc_fs.h | 1 + include/linux/syscalls.h | 1 + include/uapi/asm-generic/siginfo.h | 3 +- include/uapi/linux/elf.h | 2 + ipc/shm.c | 2 +- kernel/sys_ni.c | 1 + mm/debug_vm_pgtable.c | 12 +- mm/gup.c | 2 +- mm/huge_memory.c | 11 +- mm/internal.h | 4 +- mm/memory.c | 5 +- mm/migrate.c | 2 +- mm/migrate_device.c | 2 +- mm/mmap.c | 14 +- mm/mprotect.c | 2 +- mm/nommu.c | 4 +- mm/userfaultfd.c | 2 +- mm/util.c | 2 +- tools/testing/selftests/x86/Makefile | 2 +- tools/testing/selftests/x86/test_shadow_stack.c | 884 ++++++++++++++++++++++++ 118 files changed, 2790 insertions(+), 308 deletions(-) create mode 100644 Documentation/arch/x86/shstk.rst create mode 100644 arch/x86/include/asm/shstk.h create mode 100644 arch/x86/kernel/cet.c create mode 100644 arch/x86/kernel/ibt_selftest.S create mode 100644 arch/x86/kernel/shstk.c create mode 100644 tools/testing/selftests/x86/test_shadow_stack.c