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    Subject[PATCH 0/9] Control Flow Enforcement - Part (2)
    Date
    Summary of changes:

    Shadow stack kernel config option;
    Control protection exception; and
    Shadow stack memory management.

    The shadow stack PTE needs to be read-only and dirty. Changes
    are made to:

    Use the read-only and hardware dirty combination exclusively
    for shadow stack;

    Use a PTE spare bit to indicate other PTE dirty conditions;

    Shadow stack page fault handling.

    Yu-cheng Yu (9):
    x86/cet: Control protection exception handler
    x86/cet: Add Kconfig option for user-mode shadow stack
    mm: Introduce VM_SHSTK for shadow stack memory
    x86/mm: Change _PAGE_DIRTY to _PAGE_DIRTY_HW
    x86/mm: Introduce _PAGE_DIRTY_SW
    x86/mm: Introduce ptep_set_wrprotect_flush and related functions
    x86/mm: Shadow stack page fault error checking
    x86/cet: Handle shadow stack page fault
    x86/cet: Handle THP/HugeTLB shadow stack page copying

    arch/x86/Kconfig | 24 ++++++
    arch/x86/entry/entry_32.S | 5 ++
    arch/x86/entry/entry_64.S | 2 +-
    arch/x86/include/asm/pgtable.h | 149 ++++++++++++++++++++++++++++++-----
    arch/x86/include/asm/pgtable_types.h | 31 +++++---
    arch/x86/include/asm/traps.h | 5 ++
    arch/x86/kernel/idt.c | 1 +
    arch/x86/kernel/relocate_kernel_64.S | 2 +-
    arch/x86/kernel/traps.c | 61 ++++++++++++++
    arch/x86/kvm/vmx.c | 2 +-
    arch/x86/mm/fault.c | 11 +++
    include/asm-generic/pgtable.h | 38 +++++++++
    include/linux/mm.h | 8 ++
    mm/huge_memory.c | 10 ++-
    mm/hugetlb.c | 2 +-
    mm/internal.h | 8 ++
    mm/memory.c | 32 +++++++-
    17 files changed, 353 insertions(+), 38 deletions(-)

    --
    2.15.1

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