> -----Original Message----- > From: Kang, Luwei <luwei.k...@intel.com> > Sent: Tuesday, February 25, 2020 5:38 AM > To: pbonz...@redhat.com; r...@twiddle.net; ehabk...@redhat.com > Cc: qemu-devel@nongnu.org; Strong, Beeman <beeman.str...@intel.com>; > Kang, Luwei <luwei.k...@intel.com> > Subject: [PATCH v1 0/3] Remove the limitation of Intel PT CPUID info > > 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.
Ping. Thanks, Luwei Kang > > 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(-) > > -- > 1.8.3.1
