diff options
Diffstat (limited to 'include/xen/interface/xenpmu.h')
| -rw-r--r-- | include/xen/interface/xenpmu.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/xen/interface/xenpmu.h b/include/xen/interface/xenpmu.h index eac1b498b89f..ca42301949b5 100644 --- a/include/xen/interface/xenpmu.h +++ b/include/xen/interface/xenpmu.h @@ -56,4 +56,37 @@ struct xen_pmu_params { */ #define XENPMU_FEATURE_INTEL_BTS 1 +/* + * Shared PMU data between hypervisor and PV(H) domains. + * + * The hypervisor fills out this structure during PMU interrupt and sends an + * interrupt to appropriate VCPU. + * Architecture-independent fields of xen_pmu_data are WO for the hypervisor + * and RO for the guest but some fields in xen_pmu_arch can be writable + * by both the hypervisor and the guest (see arch-$arch/pmu.h). + */ +struct xen_pmu_data { + /* Interrupted VCPU */ + uint32_t vcpu_id; + + /* + * Physical processor on which the interrupt occurred. On non-privileged + * guests set to vcpu_id; + */ + uint32_t pcpu_id; + + /* + * Domain that was interrupted. On non-privileged guests set to + * DOMID_SELF. + * On privileged guests can be DOMID_SELF, DOMID_XEN, or, when in + * XENPMU_MODE_ALL mode, domain ID of another domain. + */ + domid_t domain_id; + + uint8_t pad[6]; + + /* Architecture-specific information */ + struct xen_pmu_arch pmu; +}; + #endif /* __XEN_PUBLIC_XENPMU_H__ */ |