[v3] Support CPUID signature for TCG

[Qemu-devel] [PATCH v3 0/2] Support CPUID signature for TCG

Daniel P. Berrange posted 2 patches 6 years, 11 months ago

Diff against v2 v4
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include/hw/i386/pc.h |  5 +++++
target/i386/cpu.c    | 59 +++++++++++++++++++++++++++++++++-------------------
target/i386/cpu.h    |  1 +
3 files changed, 44 insertions(+), 21 deletions(-)

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[Qemu-devel] [PATCH v3 0/2] Support CPUID signature for TCG

Posted by Daniel P. Berrange 6 years, 11 months ago

This enables report of a signature in CPUID for the TCG
interpretor.

Changed in v3:

 - Simplify CPU limit code still further (Eduardo)

Changed in v2:

 - Rewrite the way we bounds check / cap the CPUID index
   to use a flat switch, instead of nested ifs (Eduardo)
 - Add a 'tcg-cpuid' property to allow it to be hidden
   (Eduardo)
 - Hide the TCG signature for old machine types
 - Force code to a no-op if tcg_enabled() is false (Eduardo)


NB, I did not introduce a general 'hypervisor-cpuid' property
to obsolete the existing 'kvm=off|on' -cpu property, since it
appears impossible to get the back compat semantics right,
as described in a previous reply.


Daniel P. Berrange (2):
  i386: rewrite way CPUID index is validated
  i386: expose "TCGTCGTCGTCG" in the 0x40000000 CPUID leaf

 include/hw/i386/pc.h |  5 +++++
 target/i386/cpu.c    | 59 +++++++++++++++++++++++++++++++++-------------------
 target/i386/cpu.h    |  1 +
 3 files changed, 44 insertions(+), 21 deletions(-)

-- 
2.9.3