diff options
Diffstat (limited to 'usr/src/uts/intel/sys/archsystm.h')
| -rw-r--r-- | usr/src/uts/intel/sys/archsystm.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/usr/src/uts/intel/sys/archsystm.h b/usr/src/uts/intel/sys/archsystm.h index a39221b353..e06e79de97 100644 --- a/usr/src/uts/intel/sys/archsystm.h +++ b/usr/src/uts/intel/sys/archsystm.h @@ -21,6 +21,7 @@ /* * Copyright (c) 1993, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright 2015 Joyent, Inc. */ #ifndef _SYS_ARCHSYSTM_H @@ -181,6 +182,17 @@ extern void fakesoftint(void); extern void *plat_traceback(void *); +/* + * The following two macros are the four byte instruction sequence of stac, ret + * and clac, ret. These are used in startup_smap() as a part of properly setting + * up the valid instructions. For more information on SMAP, see + * uts/intel/ia32/ml/copy.s. + */ +#define SMAP_CLAC_INSTR 0xc3ca010f +#define SMAP_STAC_INSTR 0xc3cb010f +extern void smap_disable(void); +extern void smap_enable(void); + #if defined(__xpv) extern void xen_init_callbacks(void); extern void xen_set_callback(void (*)(void), uint_t, uint_t); |