[Qemu-devel] [PATCH v3 0/6] spapr: add "compat" machine option

[Alexey Kardashevskiy]

The further I go, more questions I get.

Here are 6 patches.

The first three is what I would like to have in QEMU to support "compat"
option for a CPU. The option now accepts "power6"/"power7" as after all
we will limit number of threads per core (not in this series though) and
since 2.05 does not limit number of threads at all, referring to actual
CPU models seems right.

The last three is what I would suggest doing if we needed ability to
enable/disable CPU features the way x86 does this. I used "VSX" as an example
but this is just an example so "-cpu host,-vsx,+vsx,vsx=on" works.
Using this, I suspect I could try converting x86's parser for "-cpu",
would it work?


btw I am sure there must be macro like BITNR (convert mask with 1 bit set
to a number of the bit which is set) but I failed to find it. What did I miss?


Please, comment. Thanks.


Alexey Kardashevskiy (6):
  cpu: add suboptions support
  target-ppc: make use of new -cpu suboptions handling
  target-ppc: add "compat" CPU option
  qemu-option: support +foo/-foo command line agruments
  bitops: add BITNR macro
  target-ppc: demonstrate new "vsx" property

 hw/ppc/spapr.c              | 13 +++++++-
 include/qemu/bitops.h       | 12 ++++++++
 include/qom/cpu.h           | 29 ++++++++++++++++++
 include/sysemu/sysemu.h     |  1 +
 qom/cpu.c                   | 27 +++++++++++++++++
 target-ppc/cpu-models.h     | 10 +++++++
 target-ppc/cpu.h            |  4 +++
 target-ppc/translate_init.c | 73 +++++++++++++++++++++++++++++++++++++++++++++
 util/qemu-option.c          |  6 ++++
 vl.c                        | 42 ++++++++++++++++++++++++++
 10 files changed, 216 insertions(+), 1 deletion(-)

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1.8.4.rc4