Changeset 87633 in vbox for trunk/src/VBox/VMM/include

Timestamp:

Feb 5, 2021 9:37:09 PM (4 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

142669

Message:

VMM/TM,VMM/HMVMX: Try avoid calling TMCpuTickGetDeadlineAndTscOffset as it is expensive. Current approach is a bit erratic wrt CPUID benchmark results, but it's generally better than before.

Location:

trunk/src/VBox/VMM/include

Files:

• HMInternal.h (modified) (2 diffs)
• HMInternal.mac (modified) (1 diff)

trunk/src/VBox/VMM/include/HMInternal.h

@@ -1321 +1321 @@
     STAMCOUNTER             StatVmxCheckPmOk;
 
+    STAMCOUNTER             StatVmxPreemptionRecalcingDeadline;
+    STAMCOUNTER             StatVmxPreemptionRecalcingDeadlineExpired;
+    STAMCOUNTER             StatVmxPreemptionReusingDeadline;
+    STAMCOUNTER             StatVmxPreemptionReusingDeadlineExpired;
+
 #ifdef VBOX_WITH_STATISTICS
     R3PTRTYPE(PSTAMCOUNTER) paStatExitReason;
@@ -1389 +1394 @@
         /** Ring-0 pointer to the hardware-assisted VMX execution function. */
         PFNHMVMXSTARTVM             pfnStartVm;
+        /** Absolute TSC deadline. */
+        uint64_t                    uTscDeadline;
+        /** The deadline version number. */
+        uint64_t                    uTscDeadlineVersion;
 
         /** @name Guest information.

trunk/src/VBox/VMM/include/HMInternal.mac

@@ -182 +182 @@
 struc HMR0CPUVMX
     .pfnStartVm                     RTR0PTR_RES  1
+    .uTscDeadline                   resq    1
+    .uTscDeadlineVersion            resq    1
+
 
     .VmcsInfo                       resb    VMXVMCSINFO_size