[Qemu-devel] [PATCH v4 0/2] Support CPUID signature for TCG

["Daniel P. Berrange" <berrange@redhat.com>]

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

Changed in v4:

 - Report 0x40000001 in EAX for 0x40000000 index (Eduardo)
 - Report all zeros for 0x40000001 index (Eduardo)
 - Make code style consistent when checking limits (Eduardo)

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    | 65 +++++++++++++++++++++++++++++++++++-----------------
 target/i386/cpu.h    |  1 +
 3 files changed, 50 insertions(+), 21 deletions(-)

-- 
2.9.3