[kvm-unit-tests PATCH 0/2] Fix TOC value in exception handler

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As noticed by Thomas, if the TOC pointer (r2) is corrupted,
the code from the exception table cannot call the common exception handler
function.

This series tries to fix that by calling call_handler without using
the TOC pointer but a pointer to the function stored at an absolute
address in memory (as SLOF does), and then by restoring the value of
r2 before calling the user registered exception handler.

An easy way to to compute the TOC address seems to use directly the value
of the load address used by QEMU instead of computing it from the PC.

Laurent Vivier (2):
  powerpc: use well known kernel start address
  powerpc: restore TOC pointer

 powerpc/boot_rom.S |  3 ++-
 powerpc/cstart64.S | 23 +++++++++++++++++++----
 powerpc/spapr.h    |  6 ++++++
 3 files changed, 27 insertions(+), 5 deletions(-)
 create mode 100644 powerpc/spapr.h

-- 
2.5.5

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