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    SubjectRe: [PATCH PTI v3 00/10] Clean up pgd handling and fix VSYSCALL and LDT

    * Andy Lutomirski <luto@kernel.org> wrote:

    > This should fix some existing 5-level bugs and get VSYSCALL and LDT
    > working with PTI.
    >
    > Changes from v1:
    > - vsyscalls actually work.
    > - Added the "Warn and fail" patch to prevent the testing goof I had on v1.
    > - Lots of cleanups
    >
    > Andy Lutomirski (10):
    > x86/espfix/64: Fix espfix double-fault handling on 5-level systems
    > x86/pti: Vastly simplify pgd synchronization
    > x86/pti/64: Fix ESPFIX64 user mapping
    > Revert "x86/mm/pti: Disable native VSYSCALL"
    > x86/vsyscall/64: Explicitly set _PAGE_USER in the pagetable hierarchy
    > x86/vsyscall/64: Warn and fail vsyscall emulation in NATIVE mode
    > x86/pti: Map the vsyscall page if needed
    > x86/mm/64: Improve the memory map documentation
    > x86/mm/64: Make a full PGD-entry size hole in the memory map
    > x86/pti: Put the LDT in its own PGD if PTI is on
    >
    > Documentation/x86/x86_64/mm.txt | 15 +--
    > arch/x86/Kconfig | 8 --
    > arch/x86/entry/vsyscall/vsyscall_64.c | 37 +++++++-
    > arch/x86/include/asm/mmu_context.h | 48 +++++++++-
    > arch/x86/include/asm/pgtable.h | 6 +-
    > arch/x86/include/asm/pgtable_64.h | 77 +++++++---------
    > arch/x86/include/asm/pgtable_64_types.h | 8 +-
    > arch/x86/include/asm/processor.h | 23 +++--
    > arch/x86/include/asm/vsyscall.h | 1 +
    > arch/x86/kernel/espfix_64.c | 16 ----
    > arch/x86/kernel/ldt.c | 155 +++++++++++++++++++++++++++++--
    > arch/x86/kernel/traps.c | 2 +-
    > arch/x86/mm/dump_pagetables.c | 12 +++
    > arch/x86/mm/pti.c | 157 ++++++++++++++++++++++----------
    > init/main.c | 11 ++-
    > 15 files changed, 426 insertions(+), 150 deletions(-)

    Hm, I only received the 0/10 boilerplate email, not any of the patches - and
    Thomas tells me he too only got the cover letter.

    Thanks,

    Ingo

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