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From: Peter Wemm <peter@FreeBSD.org>
Subject: PERFORCE change 17853 for review
To: Perforce Change Reviews <perforce@freebsd.org>
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http://people.freebsd.org/~peter/p4db/chv.cgi?CH=17853

Change 17853 by peter@peter_overcee on 2002/09/21 04:03:03

	add EFER bits so we can actually turn long mode on.

Affected files ...

.. //depot/projects/hammer/sys/x86_64/include/specialreg.h#4 edit

Differences ...

==== //depot/projects/hammer/sys/x86_64/include/specialreg.h#4 (text+ko) ====

@@ -75,6 +75,14 @@
 #define	CR4_XMM	0x00000400	/* enable SIMD/MMX2 to use except 16 */
 
 /*
+ * Bits in x86-64 special registers.  EFER is 64 bits wide.
+ */
+#define	EFER_SCE 0x000000001	/* System Call Extensions (R/W) */
+#define	EFER_LME 0x000000100	/* Long mode enable (R/W) */
+#define	EFER_LMA 0x000000400	/* Long mode active (R) */
+#define	EFER_NXE 0x000000800	/* PTE No-Execute bit enable (R/W) */
+
+/*
  * CPUID instruction features register
  */
 #define	CPUID_FPU	0x00000001

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