[PATCH 0/3] Remove interrupt stack table usage from x86_64 kernel

[Avi Kivity]

The interrupt stack table (IST) mechanism is the only thing preventing
kvm from deferring saving and reloading of some significant state.  It
is also somewhat complicated.

Remove it by switching the special exceptions to use the normal irqstack.

Avi Kivity (3):
  x86: drop the use of the tss interrupt stack table (IST)
  x86: Remove pda.irqcount
  x86: Switch critical exceptions and NMI to irqstack

 arch/x86/include/asm/desc.h      |   12 -----
 arch/x86/include/asm/page_64.h   |    7 ---
 arch/x86/include/asm/pda.h       |    2 +-
 arch/x86/include/asm/processor.h |   11 ----
 arch/x86/kernel/asm-offsets_64.c |    1 -
 arch/x86/kernel/cpu/common.c     |   35 --------------
 arch/x86/kernel/dumpstack_64.c   |   96 --------------------------------------
 arch/x86/kernel/entry_64.S       |   49 ++++++++-----------
 arch/x86/kernel/traps.c          |   12 ++--
 9 files changed, 27 insertions(+), 198 deletions(-)

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