Changeset 10208

Timestamp:

07/04/08 11:17:59 (5 months ago)

Author:

vboxsync

Message:

Cpuid 0x800000005 & 0x800000006 contain information about L1, L2 & L3 cache and TLB identifiers. Safe to pass on to the guest.

Files:

• trunk/src/VBox/VMM/CPUM.cpp (modified) (4 diffs)

trunk/src/VBox/VMM/CPUM.cpp

@@ -343 +343 @@
-
-    /*
-
+e
-     *
-     * Intel returns values of the highest standard function, while AMD
@@ -352 +352 @@
-             &pCPUM->GuestCpuIdDef.eax, &pCPUM->GuestCpuIdDef.ebx,
-             &pCPUM->GuestCpuIdDef.ecx, &pCPUM->GuestCpuIdDef.edx);
+
+    /* Cpuid 0x800000005 & 0x800000006 contain information about L1, L2 & L3 cache and TLB identifiers. 
+     * Safe to pass on to the guest.
+     *
+     * Intel: 0x800000005 reserved
+     *        0x800000006 L2 cache information
+     * AMD:   0x800000005 L1 cache information
+     *        0x800000006 L2/L3 cache information
+     */
-
-    /*
@@ -365 +374 @@
-        pCPUM->aGuestCpuIdStd[i] = pCPUM->GuestCpuIdDef;
-
-4
-4
+6
+6
-    for (i = pCPUM->aGuestCpuIdExt[0].eax >= UINT32_C(0x80000000)
-           ? pCPUM->aGuestCpuIdExt[0].eax - UINT32_C(0x80000000) + 1
@@ -376 +385 @@
-     * 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.
-
+currently 
-     */
-    pCPUM->aGuestCpuIdStd[4].eax = 0;