Changeset 54930 in vbox

Timestamp:

Mar 24, 2015 5:39:27 PM (10 years ago)

Author:

vboxsync

Message:

docs

File:

• trunk/src/VBox/VMM/VMMR3/CPUM.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR3/CPUM.cpp

@@ -515 +515 @@
  * Checks for partial/leaky FXSAVE/FXRSTOR handling on AMD CPUs.
  *
- * AMD K7, K8 and newer AMD CPUs do not save/restore the x87 error
- * pointers (last instruction pointer, last data pointer, last opcode)
- * except when the ES bit (Exception Summary) in x87 FSW (FPU Status
- * Word) is set. Thus if we don't clear these registers there is
- * potential, local FPU leakage from a process using the FPU to
- * another.
+ * AMD K7, K8 and newer AMD CPUs do not save/restore the x87 error pointers
+ * (last instruction pointer, last data pointer, last opcode) except when the ES
+ * bit (Exception Summary) in x87 FSW (FPU Status Word) is set. Thus if we don't
+ * clear these registers there is potential, local FPU leakage from a process
+ * using the FPU to another.
  *
  * See AMD Instruction Reference for FXSAVE, FXRSTOR.