>>> On 17.03.15 at 15:54, <boris.ostrov...@oracle.com> wrote: > Add runtime interface for setting PMU mode and flags. Three main modes are > provided: > * XENPMU_MODE_OFF: PMU is not virtualized > * XENPMU_MODE_SELF: Guests can access PMU MSRs and receive PMU interrupts. > * XENPMU_MODE_HV: Same as XENPMU_MODE_SELF for non-proviledged guests, dom0 > can profile itself and the hypervisor. > > Note that PMU modes are different from what can be provided at Xen's boot > line > with 'vpmu' argument. An 'off' (or '0') value is equivalent to > XENPMU_MODE_OFF. > Any other value, on the other hand, will cause VPMU mode to be set to > XENPMU_MODE_SELF during boot. > > For feature flags only Intel's BTS is currently supported. > > Mode and flags are set via HYPERVISOR_xenpmu_op hypercall. > > Signed-off-by: Boris Ostrovsky <boris.ostrov...@oracle.com> > Acked-by: Daniel De Graaf <dgde...@tycho.nsa.gov>
Acked-by: Jan Beulich <jbeul...@suse.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
