.</p>
<p>The processor sets the TS flag every time a task switch occurs. The flag is used to synchronize the saving of FPU context in multitasking applications. See the description of the TS flag in the section titled “Control Registers” in Chapter 2 of the <em>Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 3A</em>, for more information about this flag.</p>
<p>CLTS operation is the same in non-64-bit modes and 64-bit mode.</p>
<p>See Chapter 25, “VMX Non-Root Operation,” of