Re: [Xen-devel] SVM MSRs issue

2018-04-24 Thread Razvan Cojocaru
> While testing MSR vm_events, we've come accross some puzzling behaviour > while trying to follow the guest's MSR_LSTAR: it starts out as zero, > then it changes value before the first MSR write event, without going > through svm_msr_write_intercept(). The culprit seems to be a > svm_vmsave_pa() c

[Xen-devel] SVM MSRs issue

2018-04-24 Thread Razvan Cojocaru
Hello, While testing MSR vm_events, we've come accross some puzzling behaviour while trying to follow the guest's MSR_LSTAR: it starts out as zero, then it changes value before the first MSR write event, without going through svm_msr_write_intercept(). The culprit seems to be a svm_vmsave_pa() cal