Changes for v3:
* Most of the v2 patch set merged, except x86_64 atomic128-ldst.h,
which failed testing with clang-11 with debian 11.
* New patch to change __int128_t detection.
* This in turn enabled CONFIG_ATOMIC128, which was not ideal.
This clang bug/mis-feature of using a cmpxchg sequence for
implementing __atomic_load_n was already noted for aarch64,
so I should have expected it would also be true for x86_64.
Given that I am adding inline assembly for CPUINFO_ATOMIC_VMOVDQA
anyway, this isn't a big deal, but I did need to adjust the ifdefs.
r~
Richard Henderson (2):
meson: Split test for __int128_t type from __int128_t arithmetic
qemu/atomic128: Add x86_64 atomic128-ldst.h
meson.build | 15 +++--
host/include/x86_64/host/atomic128-ldst.h | 68 +++++++++++++++++++++++
include/qemu/int128.h | 4 +-
3 files changed, 80 insertions(+), 7 deletions(-)
create mode 100644 host/include/x86_64/host/atomic128-ldst.h
--
2.34.1
