[Xen-devel] [PATCH] [HVMLOADER] built-in memcmp function uses not-yet implemented opcode

[Stefan Berger <stefanb@xxxxxxxxxx>]

Keir,

  it seems like the acpi/build.c function now uses the gcc built-in
memcmp function. Unfortunately that one seems to generate some code that
hits a not-yet implemented/emulated opcode. Instead of implementing
emultaion for that opcode I just copied the previously used memcmp
function from util.c into the build.c and renamed it to _memcmp to avoid
linking problems. 

(XEN) a6, This opcode isn't handled yet!
(XEN) handle_mmio: failed to decode instruction
(XEN) mmio opcode: gpa 0xfed40f00, len 2: f3 a6
(XEN) domain_crash_sync called from platform.c:944

Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxx>

Attachment: acpi_build_memcmp_fix.diff
Description: Text Data

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