On Fri, Mar 13, 2020 at 12:48:06AM +0800, Luwei Kang wrote: > The CPUID level need to be set to 0x14 manually on old > machine-type if Intel PT is enabled in guest. E.g. the > CPUID[0].EAX(level)=7 and CPUID[7].EBX[25](intel-pt)=1 when the > Qemu with "-machine pc-i440fx-3.1 -cpu qemu64,+intel-pt" parameter. > > Some Intel PT capabilities are exposed by leaf 0x14 and the > missing capabilities will cause some MSRs access failed. > This patch add a warning message to inform the user to extend > the CPUID level. > > Suggested-by: Eduardo Habkost <ehabk...@redhat.com> > Signed-off-by: Luwei Kang <luwei.k...@intel.com>
Queued, thanks. -- Eduardo
