[PATCH v1 0/3] Remove the limitation of Intel PT CPUID info

[Luwei Kang]

The Intel PT feature includes some sub-features(CPUID.(EAX=14H,ECX=0H)) and
these sub-features are different on different HW platforms. To make the live
migration safety(get the same CPUID info with same cpu model on different HW
platform), the current Intel PT CPUID information is set to a constant
value(from ICELAKE Server).

It will block the new feature in the later HW platform. what's more, the
support of "IP payloads" will disable the Intel PT in KVM guest(patch 1) but
it will come soon.

This patchset remove this limitation and expose all the capabilities to
KVM guest. As it will break the live migration safe, Intel PT will be
masked as unmigratable.

Luwei Kang (3):
  i386: Remove the limitation of IP payloads for Intel PT
  i386: Remove the CPUID limitation of Intel PT
  i386: Mark the 'INTEL_PT' CPUID bit as unmigratable

 target/i386/cpu.c | 69 ++++---------------------------------------------------
 1 file changed, 5 insertions(+), 64 deletions(-)

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1.8.3.1