svn commit: r327469 - head/sys/x86/include

[Konstantin Belousov]

Author: kib
Date: Mon Jan  1 19:34:19 2018
New Revision: 327469
URL: https://svnweb.freebsd.org/changeset/base/327469

Log:
  Add CR4.SMAP control bit.
  
  Sponsored by:	The FreeBSD Foundation
  MFC after:	3 days

Modified:
  head/sys/x86/include/specialreg.h

Modified: head/sys/x86/include/specialreg.h
==============================================================================
--- head/sys/x86/include/specialreg.h	Mon Jan  1 19:27:33 2018	(r327468)
+++ head/sys/x86/include/specialreg.h	Mon Jan  1 19:34:19 2018	(r327469)
@@ -76,6 +76,7 @@
 #define	CR4_PCIDE 0x00020000	/* Enable Context ID */
 #define	CR4_XSAVE 0x00040000	/* XSETBV/XGETBV */
 #define	CR4_SMEP 0x00100000	/* Supervisor-Mode Execution Prevention */
+#define	CR4_SMAP 0x00200000	/* Supervisor-Mode Access Prevention */
 
 /*
  * Bits in AMD64 special registers.  EFER is 64 bits wide.