Index: /trunk/include/iprt/x86.h
===================================================================
--- /trunk/include/iprt/x86.h	(revision 55689)
+++ /trunk/include/iprt/x86.h	(revision 55690)
@@ -823,4 +823,6 @@
 /** Bit 21 - SMAP - Supervisor-mode Access Prevention enabled. */
 #define X86_CR4_SMAP                        RT_BIT(21)
+/** Bit 22 - PKE - Protection Key Enable. */
+#define X86_CR4_PKE                         RT_BIT(22)
 /** @} */
 
@@ -2832,4 +2834,8 @@
 /** Bit 7 - Hi16_ZMM - 512-bits ZMM16-31 state (AVX-512). */
 #define XSAVE_C_ZMM_16HI        RT_BIT_64(XSAVE_C_ZMM_16HI_BIT)
+/** Bit 9 - PKRU - Protection-key state (bit number). */
+#define XSAVE_C_PKRU_BIT        9
+/** Bit 9 - PKRU - Protection-key state. */
+#define XSAVE_C_PKRU            RT_BIT_64(XSAVE_C_PKRU_BIT)
 /** Bit 62 - LWP - Lightweight Profiling (AMD) (bit number). */
 #define XSAVE_C_LWP_BIT         62
@@ -3738,4 +3744,6 @@
 /** Bit 4 - I/D - Instruction fetch (set) / Data access (clear) - PAE + NXE. */
 #define X86_TRAP_PF_ID              RT_BIT(4)
+/** Bit 5 - PK - Protection-key violation (AMD64 mode only). */
+#define X86_TRAP_PF_PK              RT_BIT(5)
 /** @} */