Changeset 6171 in vbox for trunk/src/VBox

Timestamp:

Dec 21, 2007 3:41:23 PM (17 years ago)

Author:

vboxsync

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

26927

Message:

workaround for a missing cpuid(0).eax patch

File:

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

trunk/src/VBox/VMM/CPUM.cpp

@@ -317 +317 @@
          i < RT_ELEMENTS(pCPUM->aGuestCpuIdExt); i++)
         pCPUM->aGuestCpuIdExt[i] = pCPUM->GuestCpuIdDef;
+
+    /*
+     * Workaround for missing cpuid(0) patches: If we miss to patch a cpuid(0).eax then
+     * Linux tries to determine the number of processors from (cpuid(4).eax >> 26) + 1.
+     * We don't support more than 1 processor.
+     */
+    pCPUM->aGuestCpuIdStd[4].eax = 0;
 
     /*