diff options
Diffstat (limited to 'usr/src/uts/intel/sys/archsystm.h')
| -rw-r--r-- | usr/src/uts/intel/sys/archsystm.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/usr/src/uts/intel/sys/archsystm.h b/usr/src/uts/intel/sys/archsystm.h index 93fed4e87d..0c9ceac7be 100644 --- a/usr/src/uts/intel/sys/archsystm.h +++ b/usr/src/uts/intel/sys/archsystm.h @@ -185,13 +185,17 @@ 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. + * The following two macros are the four byte instruction sequence of stac, nop + * and clac, nop. These are used in startup_smap() and hotinline_smap() as a + * part of properly setting up the valid instructions. For more information on + * SMAP, see uts/intel/ia32/ml/copy.s, uts/i86pc/os/machdep.c and + * uts/common/os/modctl.c. + * + * Note that smap_disable and smap_enable are resolved to stubs at compile time, + * but inlined at runtime by do_hotinlines() in uts/i86pc/os/machdep.c. */ -#define SMAP_CLAC_INSTR 0xc3ca010f -#define SMAP_STAC_INSTR 0xc3cb010f +#define SMAP_CLAC_INSTR 0x90ca010f +#define SMAP_STAC_INSTR 0x90cb010f extern void smap_disable(void); extern void smap_enable(void); |