[linux-next,v2,1/2] xen: update arch/x86/include/asm/xen/cpuid.h

Commit Message

Krister Johansen Feb. 22, 2023, 5:54 p.m. UTC

Update arch/x86/include/asm/xen/cpuid.h from the Xen tree to get newest
definitions.  This picks up some TSC mode definitions and comment
formatting changes.

Signed-off-by: Krister Johansen <[e-mail]>
---
 arch/x86/include/asm/xen/cpuid.h | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

Patch

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)
 
 /*