[PATCH 00/21] Preparatory patches for x86 KAISER support

[Ingo Molnar]

This is mostly Andy's syscall trampoline stack patches, but also
some other preparatory cleanups and enhancements.

Sending this separately to make it (slightly) easier to review.

The Git version of the full queue can be found at:

  git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/mm

Thanks,

    Ingo

=============>

Andy Lutomirski (20):
  x86/unwinder/orc: Don't bail on stack overflow
  x86/irq: Remove an old outdated comment about context tracking races
  x86/irq/64: Print the offending IP in the stack overflow warning
  x86/entry/64: Allocate and enable the SYSENTER stack
  x86/dumpstack: Add get_stack_info() support for the SYSENTER stack
  x86/entry/gdt: Put per-CPU GDT remaps in ascending order
  x86/mm/fixmap: Generalize the GDT fixmap mechanism, introduce 'struct cpu_entry_area'
  x86/kasan/64: Teach KASAN about the cpu_entry_area
  x86/entry: Fix assumptions that the HW TSS is at the beginning of cpu_tss
  x86/dumpstack: Handle stack overflow on all stacks
  x86/entry: Move SYSENTER_stack to the beginning of struct tss_struct
  x86/entry: Remap the TSS into the CPU entry area
  x86/entry/64: Separate cpu_current_top_of_stack from TSS.sp0
  x86/espfix/64: Stop assuming that pt_regs is on the entry stack
  x86/entry/64: Use a per-CPU trampoline stack for IDT entries
  x86/entry/64: Return to userspace from the trampoline stack
  x86/entry/64: Create a per-CPU SYSCALL entry trampoline
  x86/entry/64: Move the IST stacks into 'struct cpu_entry_area'
  x86/entry/64: Remove the SYSENTER stack canary
  x86/entry: Clean up the SYSENTER_stack code

Josh Poimboeuf (1):
  x86/unwinder: Handle stack overflows more gracefully

 arch/x86/entry/entry_32.S          |   6 +-
 arch/x86/entry/entry_64.S          | 170 ++++++++++++++++++++++++++++++++-----
 arch/x86/entry/entry_64_compat.S   |   7 +-
 arch/x86/include/asm/desc.h        |  11 +--
 arch/x86/include/asm/fixmap.h      |  61 ++++++++++++-
 arch/x86/include/asm/kdebug.h      |   1 +
 arch/x86/include/asm/processor.h   |  54 +++++++-----
 arch/x86/include/asm/stacktrace.h  |   3 +
 arch/x86/include/asm/switch_to.h   |   3 +-
 arch/x86/include/asm/thread_info.h |   2 +-
 arch/x86/include/asm/traps.h       |   1 -
 arch/x86/include/asm/unwind.h      |   7 ++
 arch/x86/kernel/asm-offsets.c      |   7 ++
 arch/x86/kernel/asm-offsets_32.c   |   5 --
 arch/x86/kernel/asm-offsets_64.c   |   1 +
 arch/x86/kernel/cpu/common.c       | 136 +++++++++++++++++++++--------
 arch/x86/kernel/doublefault.c      |  36 ++++----
 arch/x86/kernel/dumpstack.c        |  74 ++++++++++++----
 arch/x86/kernel/dumpstack_32.c     |   6 ++
 arch/x86/kernel/dumpstack_64.c     |   6 ++
 arch/x86/kernel/irq.c              |  12 ---
 arch/x86/kernel/irq_64.c           |   4 +-
 arch/x86/kernel/process.c          |  13 ++-
 arch/x86/kernel/process_64.c       |  12 +--
 arch/x86/kernel/stacktrace.c       |   2 +-
 arch/x86/kernel/traps.c            |  57 ++++++++-----
 arch/x86/kernel/unwind_orc.c       |  88 ++++++++-----------
 arch/x86/kernel/vmlinux.lds.S      |   9 ++
 arch/x86/mm/kasan_init_64.c        |  18 +++-
 arch/x86/power/cpu.c               |  16 ++--
 arch/x86/xen/mmu_pv.c              |   2 +-
 31 files changed, 590 insertions(+), 240 deletions(-)

-- 
2.14.1