diff options
Diffstat (limited to 'arch/x86/include/asm/xen')
| -rw-r--r-- | arch/x86/include/asm/xen/cpuid.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/x86/include/asm/xen/cpuid.h b/arch/x86/include/asm/xen/cpuid.h index 6daa9b0c8d11..a3c29b1496c8 100644 --- a/arch/x86/include/asm/xen/cpuid.h +++ b/arch/x86/include/asm/xen/cpuid.h @@ -89,11 +89,21 @@ * Sub-leaf 2: EAX: host tsc frequency in kHz */ +#define XEN_CPUID_TSC_EMULATED (1u << 0) +#define XEN_CPUID_HOST_TSC_RELIABLE (1u << 1) +#define XEN_CPUID_RDTSCP_INSTR_AVAIL (1u << 2) + +#define XEN_CPUID_TSC_MODE_DEFAULT (0) +#define XEN_CPUID_TSC_MODE_ALWAYS_EMULATE (1u) +#define XEN_CPUID_TSC_MODE_NEVER_EMULATE (2u) +#define XEN_CPUID_TSC_MODE_PVRDTSCP (3u) + /* * Leaf 5 (0x40000x04) * HVM-specific features * Sub-leaf 0: EAX: Features * Sub-leaf 0: EBX: vcpu id (iff EAX has XEN_HVM_CPUID_VCPU_ID_PRESENT flag) + * Sub-leaf 0: ECX: domain id (iff EAX has XEN_HVM_CPUID_DOMID_PRESENT flag) */ #define XEN_HVM_CPUID_APIC_ACCESS_VIRT (1u << 0) /* Virtualized APIC registers */ #define XEN_HVM_CPUID_X2APIC_VIRT (1u << 1) /* Virtualized x2APIC accesses */ @@ -102,12 +112,16 @@ #define XEN_HVM_CPUID_VCPU_ID_PRESENT (1u << 3) /* vcpu id is present in EBX */ #define XEN_HVM_CPUID_DOMID_PRESENT (1u << 4) /* domid is present in ECX */ /* - * Bits 55:49 from the IO-APIC RTE and bits 11:5 from the MSI address can be - * used to store high bits for the Destination ID. This expands the Destination - * ID field from 8 to 15 bits, allowing to target APIC IDs up 32768. + * With interrupt format set to 0 (non-remappable) bits 55:49 from the + * IO-APIC RTE and bits 11:5 from the MSI address can be used to store + * high bits for the Destination ID. This expands the Destination ID + * field from 8 to 15 bits, allowing to target APIC IDs up 32768. */ #define XEN_HVM_CPUID_EXT_DEST_ID (1u << 5) -/* Per-vCPU event channel upcalls */ +/* + * Per-vCPU event channel upcalls work correctly with physical IRQs + * bound to event channels. + */ #define XEN_HVM_CPUID_UPCALL_VECTOR (1u << 6) /* |