Changeset 82814 in vbox for trunk/include/VBox/vmm

Timestamp:

Jan 22, 2020 3:38:46 AM (5 years ago)

Author:

vboxsync

Message:

VMM/HM: Implement last-branch-record (LBR) support for guests executed using hardware-assisted VT-x. Enable per-VM using CFGM.

Location:

trunk/include/VBox/vmm

Files:

• hm_vmx.h (modified) (2 diffs)
• vm.h (modified) (2 diffs)
• vm.mac (modified) (2 diffs)

trunk/include/VBox/vmm/hm_vmx.h

@@ -133 +133 @@
 /** VMX VMWRITE all feature exposed to the guest but not supported on host. */
 #define VMX_UFC_GST_HOST_VMWRITE_ALL                            15
+/** LBR stack size cannot be determined for the current CPU. */
+#define VMX_UFC_LBR_STACK_SIZE_UNKNOWN                          16
+/** LBR stack size of the CPU exceeds our buffer size. */
+#define VMX_UFC_LBR_STACK_SIZE_OVERFLOW                         17
 /** @} */
 
@@ -1200 +1204 @@
 /** Pointer to a const VMXMSRS struct. */
 typedef const VMXMSRS *PCVMXMSRS;
+
+
+/**
+ * LBR MSRs.
+ */
+typedef struct LBRMSRS
+{
+    /** List of LastBranch-From-IP MSRs. */
+    uint64_t    au64BranchFromIpMsr[32];
+    /** List of LastBranch-To-IP MSRs. */
+    uint64_t    au64BranchToIpMsr[32];
+    /** The MSR containing the index to the most recent branch record.  */
+    uint64_t    uBranchTosMsr;
+} LBRMSRS;
+AssertCompileSizeAlignment(LBRMSRS, 8);
+AssertCompile(sizeof(LBRMSRS) < X86_PAGE_4K_SIZE);
+/** Pointer to a VMXMSRS struct. */
+typedef LBRMSRS *PLBRMSRS;
+/** Pointer to a const VMXMSRS struct. */
+typedef const LBRMSRS *PCLBRMSRS;
 
 

trunk/include/VBox/vmm/vm.h

@@ -1279 +1279 @@
         struct HM s;
 #endif
-        uint8_t     padding[5440];      /* multiple of 64 */
+        uint8_t     padding[5504];      /* multiple of 64 */
     } hm;
 
@@ -1436 +1436 @@
 
     /** Padding for aligning the structure size on a page boundrary. */
-    uint8_t         abAlignment2[664 + 256 - sizeof(PVMCPUR3) * VMM_MAX_CPU_COUNT];
+    uint8_t         abAlignment2[664 - 64 + 256 - sizeof(PVMCPUR3) * VMM_MAX_CPU_COUNT];
 
     /* ---- end small stuff ---- */

trunk/include/VBox/vmm/vm.mac

@@ -122 +122 @@
     .vmm                    resb 1600
     .pgm                    resb 21120
-    .hm                     resb 5440
+    .hm                     resb 5504
     .trpm                   resb 5248
     .selm                   resb 768
@@ -138 +138 @@
     .cfgm                   resb 8
 
-    .abAlignment2           resb 664 + 256 - RTR0PTR_CB * VMM_MAX_CPU_COUNT
+    .abAlignment2           resb 664 - 64 + 256 - RTR0PTR_CB * VMM_MAX_CPU_COUNT
 
     alignb RTR0PTR_CB * VMM_MAX_CPU_COUNT ; ASSUMES VMM_MAX_CPU_COUNT is a power of two.