1 #ifndef __XEN_PUBLIC_XENPMU_H__ 2 #define __XEN_PUBLIC_XENPMU_H__ 3 4 #include "xen.h" 5 6 #define XENPMU_VER_MAJ 0 7 #define XENPMU_VER_MIN 1 8 9 /* 10 * ` enum neg_errnoval 11 * ` HYPERVISOR_xenpmu_op(enum xenpmu_op cmd, struct xenpmu_params *args); 12 * 13 * @cmd == XENPMU_* (PMU operation) 14 * @args == struct xenpmu_params 15 */ 16 /* ` enum xenpmu_op { */ 17 #define XENPMU_mode_get 0 /* Also used for getting PMU version */ 18 #define XENPMU_mode_set 1 19 #define XENPMU_feature_get 2 20 #define XENPMU_feature_set 3 21 #define XENPMU_init 4 22 #define XENPMU_finish 5 23 #define XENPMU_lvtpc_set 6 24 #define XENPMU_flush 7 25 26 /* ` } */ 27 28 /* Parameters structure for HYPERVISOR_xenpmu_op call */ 29 struct xen_pmu_params { 30 /* IN/OUT parameters */ 31 struct { 32 uint32_t maj; 33 uint32_t min; 34 } version; 35 uint64_t val; 36 37 /* IN parameters */ 38 uint32_t vcpu; 39 uint32_t pad; 40 }; 41 42 /* PMU modes: 43 * - XENPMU_MODE_OFF: No PMU virtualization 44 * - XENPMU_MODE_SELF: Guests can profile themselves 45 * - XENPMU_MODE_HV: Guests can profile themselves, dom0 profiles 46 * itself and Xen 47 * - XENPMU_MODE_ALL: Only dom0 has access to VPMU and it profiles 48 * everyone: itself, the hypervisor and the guests. 49 */ 50 #define XENPMU_MODE_OFF 0 51 #define XENPMU_MODE_SELF (1<<0) 52 #define XENPMU_MODE_HV (1<<1) 53 #define XENPMU_MODE_ALL (1<<2) 54 55 /* 56 * PMU features: 57 * - XENPMU_FEATURE_INTEL_BTS: Intel BTS support (ignored on AMD) 58 */ 59 #define XENPMU_FEATURE_INTEL_BTS 1 60 61 /* 62 * Shared PMU data between hypervisor and PV(H) domains. 63 * 64 * The hypervisor fills out this structure during PMU interrupt and sends an 65 * interrupt to appropriate VCPU. 66 * Architecture-independent fields of xen_pmu_data are WO for the hypervisor 67 * and RO for the guest but some fields in xen_pmu_arch can be writable 68 * by both the hypervisor and the guest (see arch-$arch/pmu.h). 69 */ 70 struct xen_pmu_data { 71 /* Interrupted VCPU */ 72 uint32_t vcpu_id; 73 74 /* 75 * Physical processor on which the interrupt occurred. On non-privileged 76 * guests set to vcpu_id; 77 */ 78 uint32_t pcpu_id; 79 80 /* 81 * Domain that was interrupted. On non-privileged guests set to 82 * DOMID_SELF. 83 * On privileged guests can be DOMID_SELF, DOMID_XEN, or, when in 84 * XENPMU_MODE_ALL mode, domain ID of another domain. 85 */ 86 domid_t domain_id; 87 88 uint8_t pad[6]; 89 90 /* Architecture-specific information */ 91 struct xen_pmu_arch pmu; 92 }; 93 94 #endif /* __XEN_PUBLIC_XENPMU_H__ */ 95