On Thu, Jun 07, 2018 at 04:40:51PM +0300, Alexander Shishkin wrote: > On Tue, May 22, 2018 at 12:52:07PM +0800, Luwei Kang wrote: > > CPUID(EAX=14H,ECX=0):EBX[bit 3] = 1 indicates support of > > output to Trace Transport subsystem. > > MSR IA32_RTIT_CTL.FabricEn[bit 6] is reserved if > > CPUID.(EAX=14H, ECX=0):ECX[bit 3] = 0. > > This should instead say: > > This adds support for "output to Trace Transport subsystem" capability > of Intel PT, as documented in IA SDM Chapter 36.x.y.z. It means that > PT can output its trace to an MMIO address range rather than system > memory buffer. The $subject also needs attention.
