RE: [PATCH v13 06/12] KVM: x86: Add Intel PT virtualization work mode

From: Thomas Gleixner
Date: Tue Oct 30 2018 - 05:30:38 EST


Kang,

On Thu, 25 Oct 2018, Kang, Luwei wrote:
> > > +#define SECONDARY_EXEC_PT_USE_GPA 0x01000000
> > > +#define VM_EXIT_CLEAR_IA32_RTIT_CTL 0x02000000
> > > +#define VM_ENTRY_LOAD_IA32_RTIT_CTL 0x00040000
> >
> > Where are all of these bits documented? I'm looking at the latest SDM, volume 3 (325384-067US), and none of these bits aredocumented
> > there.
>
> This part is in the " Intel Architecture Instruction Set Extensions and Future Features Programming Reference"
> https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf
>

Yet another PDF which will change it's location sooner than later. Can you
please stick that into the kernel.org bugzilla and reference the BZ in the
change log, so we have something for posterity?

Thanks,

tglx