Looks good. Reviewed-by: Babu Moger <[email protected]> > -----Original Message----- > From: Woods, Brian > Sent: Tuesday, February 20, 2018 6:13 PM > To: [email protected] > Cc: Boris Ostrovsky <[email protected]>; Suthikulpanit, Suravee > <[email protected]>; Jan Beulich <[email protected]>; > Andrew Cooper <[email protected]>; Woods, Brian > <[email protected]> > Subject: [PATCH 2/2] x86/svm: enable pause filtering threshold > > If available, enable the pause filtering threshold feature. See the > previous commit for more information. > > Signed-off-by: Brian Woods <[email protected]> > --- > xen/arch/x86/hvm/svm/svm.c | 1 + > xen/arch/x86/hvm/svm/vmcb.c | 3 +++ > 2 files changed, 4 insertions(+) > > diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c > index 9f58afc2d8..b6b92365bf 100644 > --- a/xen/arch/x86/hvm/svm/svm.c > +++ b/xen/arch/x86/hvm/svm/svm.c > @@ -1694,6 +1694,7 @@ const struct hvm_function_table * __init > start_svm(void) > P(cpu_has_svm_vloadsave, "Virtual VMLOAD/VMSAVE"); > P(cpu_has_svm_vgif, "Virtual GIF"); > P(cpu_has_pause_filter, "Pause-Intercept Filter"); > + P(cpu_has_pause_thresh, "Pause-Intercept Filter Threshold"); > P(cpu_has_tsc_ratio, "TSC Rate MSR"); > #undef P > > diff --git a/xen/arch/x86/hvm/svm/vmcb.c > b/xen/arch/x86/hvm/svm/vmcb.c > index 0e6cba5b7b..ebe6f0c751 100644 > --- a/xen/arch/x86/hvm/svm/vmcb.c > +++ b/xen/arch/x86/hvm/svm/vmcb.c > @@ -227,6 +227,9 @@ static int construct_vmcb(struct vcpu *v) > { > vmcb->_pause_filter_count = SVM_PAUSEFILTER_INIT; > vmcb->_general1_intercepts |= GENERAL1_INTERCEPT_PAUSE; > + > + if ( cpu_has_pause_thresh ) > + vmcb->_pause_filter_thresh = SVM_PAUSETHRESH_INIT; > } > > vmcb->cleanbits.bytes = 0; > -- > 2.11.0
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