Changeset 50749 in vbox

Timestamp:

Mar 12, 2014 3:00:05 PM (11 years ago)

Author:

vboxsync

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

92759

Message:

VMM/HMVMXR0: When only all-context VPID flush is supported by the CPU, avoid reflushing -all- VPIDs for every run
after hitting VPID limit.

It is sufficient to flush all VPIDs once per host CPU when the limit is reached.

File:

• trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp

@@ -2040 +2040 @@
         pVCpu->hm.s.uCurrentAsid   = pCpu->uCurrentAsid;
         if (pCpu->fFlushAsidBeforeUse)
-            hmR0VmxFlushVpid(pVM, pVCpu, pVM->hm.s.vmx.enmFlushVpid, 0 /* GCPtr */);
+        {
+            if (pVM->hm.s.vmx.enmFlushVpid == VMX_FLUSH_VPID_SINGLE_CONTEXT)
+                hmR0VmxFlushVpid(pVM, pVCpu, VMX_FLUSH_VPID_SINGLE_CONTEXT, 0 /* GCPtr */);
+            else if (pVM->hm.s.vmx.enmFlushVpid == VMX_FLUSH_VPID_ALL_CONTEXTS)
+            {
+                hmR0VmxFlushVpid(pVM, pVCpu, VMX_FLUSH_VPID_ALL_CONTEXTS, 0 /* GCPtr */);
+                pCpu->fFlushAsidBeforeUse = false;
+            }
+            else
+            {
+                /* hmR0VmxSetupTaggedTlb() ensures we never get here. Paranoia. */
+                AssertMsgFailed(("Unsupported VPID-flush context type.\n"));
+            }
+        }
     }
     /** @todo We never set VMCPU_FF_TLB_SHOOTDOWN anywhere. See hmQueueInvlPage()