On Wed, Mar 14, 2018 at 03:26:31AM +0800, Luwei Kang wrote: > Intel processor trace should be disabled when > CPUID.(EAX=14H,ECX=0H).ECX.[bit31] is set. > Generated packets which contain IP payloads will have LIP > values when this bit is set, or IP payloads will have RIP > values. > Currently, The information of CPUID 14H is constant to make > live migration safty and this bit is always 0 in guest even > if host support LIP values. > Guest sees the bit is 0 will expect IP payloads with RIP > values, but the host CPU will generate IP payloads with > LIP values if this bit is set in HW. > To make sure the value of IP payloads correctly, Intel PT > should be disabled when bit[31] is set. > > Signed-off-by: Luwei Kang <luwei.k...@intel.com>
Queued, thanks. -- Eduardo
