[Xen-devel] [PATCH 0/5] x86: Implement interrupt-safe livepatching

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

So it turns out that this is quite a lot easier than I feared.

Only compile-tested on ARM, but functionally tested on x86.

Andrew Cooper (5):
  arm/alternatives: Fix apply_alternatives() API
  xen/alternatives: Plumb a 'live' parameter through apply_alternatives()
  x86/livepatch: Use text_poke() and plumb a live parameter through
  x86/alternative: Implement NMI/#MC-safe patching
  DO-NOT-APPLY - Demonstrates an NMI hitting an in-progress patch

 xen/arch/arm/alternative.c        |  20 +++---
 xen/arch/x86/alternative.c        | 131 ++++++++++++++++++++++++++++++++++++--
 xen/arch/x86/livepatch.c          |   8 +--
 xen/arch/x86/traps.c              |   2 +
 xen/arch/x86/x86_64/entry.S       |  38 ++++++++++-
 xen/common/livepatch.c            |   2 +-
 xen/include/asm-arm/alternative.h |   9 ++-
 xen/include/asm-x86/alternative.h |   5 +-
 xen/include/asm-x86/processor.h   |   2 +
 9 files changed, 187 insertions(+), 30 deletions(-)

-- 
2.1.4


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