* stale TLB entries and, especially if we're flushing global
* mappings, we don't want the compiler to reorder any subsequent
* memory accesses before the TLB flush.
- *
- * The hex opcode is invpcid (%ecx), %eax in 32-bit mode and
- * invpcid (%rcx), %rax in long mode.
*/
- asm volatile (".byte 0x66, 0x0f, 0x38, 0x82, 0x01"
- : : "m" (desc), "a" (type), "c" (&desc) : "memory");
+ asm volatile("invpcid %[desc], %[type]"
+ :: [desc] "m" (desc), [type] "r" (type) : "memory");
}
#define INVPCID_TYPE_INDIV_ADDR 0