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(-) -- 2.13.6
