From a96ba1cd3b025d07723edf71c3dfa6e946867438 Mon Sep 17 00:00:00 2001
From: kib <kib@FreeBSD.org>
Date: Tue, 19 Feb 2019 19:13:48 +0000
Subject: [PATCH] Add definition for %cr4 PKRU enable bit.

Reviewed by:	markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
Differential revision:	https://reviews.freebsd.org/D18893
---
 sys/x86/include/specialreg.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/x86/include/specialreg.h b/sys/x86/include/specialreg.h
index 5e223fa60de..127a53457fd 100644
--- a/sys/x86/include/specialreg.h
+++ b/sys/x86/include/specialreg.h
@@ -77,6 +77,7 @@
 #define	CR4_XSAVE 0x00040000	/* XSETBV/XGETBV */
 #define	CR4_SMEP 0x00100000	/* Supervisor-Mode Execution Prevention */
 #define	CR4_SMAP 0x00200000	/* Supervisor-Mode Access Prevention */
+#define	CR4_PKE	0x00400000	/* Protection Keys Enable */
 
 /*
  * Bits in AMD64 special registers.  EFER is 64 bits wide.
-- 
2.45.0