[PATCH v2 0/4] x86/boot: provide better diagnostics in AP boot failure

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

Hello,

This series attempts to improve AP boot failure diagnosis by improving
the printed failure messages (patch 1) and detecting AP getting stuck
during bringup (patch 4).  Patches 2 and 3 are preparatory changes for
the work done in patch 4.

They should be non-functional changes for systems working correctly.

Thanks, Roger.

Roger Pau Monne (4):
  x86/boot: print CPU and APIC ID in bring up failure
  x86/traps: remove smp_mb() ahead of IPI dispatch
  x86/traps: split code to dump execution state to a separate helper
  x86/boot: attempt to print trace and panic on AP bring up stall

 xen/arch/x86/include/asm/processor.h |  1 +
 xen/arch/x86/smpboot.c               | 14 +++++-
 xen/arch/x86/traps.c                 | 64 +++++++++++++++++-----------
 3 files changed, 51 insertions(+), 28 deletions(-)

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2.49.0