Ping...
Eduardo, could you please take a look at this series.
Thanks!
-Xiaoyao
On 9/9/2021 10:41 PM, Xiaoyao Li wrote:
> Initial Intel PT support was added by making it as fixed feature set as
> ICX's capabilities, which allowed different CPU model with PT enabled
> live migration on ICX host. However, it breaks the PT exposure/working
> on SPR machine. Because SPR has less PT capabilities regrading
> CPUID(0x14,1):EBX[15:0].
>
> This series aims to make Intel PT configurable that named CPU model can
> define its own PT feature set and "-cpu host/max" can use the host pass
> through feature set of PT.
>
> At the same time, it also ensure existing named CPU model to generate
> the same PT CPUID set as before to not break live migration.
>
> Xiaoyao Li (5):
> target/i386: Print CPUID subleaf info for unsupported feature
> target/i386: Introduce FeatureWordInfo for Intel PT CPUID leaf 0xD
> target/i386: Enable host pass through of Intel PT
> target/i386: Define specific PT feature set for IceLake-server and
> Snowridge
> target/i386: Access MSR_IA32_RTIT_ADDRn based on guest CPUID
> configuration
>
> target/i386/cpu.c | 215 ++++++++++++++++++++++++++++--------------
> target/i386/cpu.h | 40 +++++++-
> target/i386/kvm/kvm.c | 8 +-
> 3 files changed, 186 insertions(+), 77 deletions(-)
>