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x86: SMAP instructions are NP

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The SMAP instructions are np; notably the prefixed versions of CLAC
are ERETU/ERETS.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin 2023-12-14 17:57:27 -08:00
parent 2fae1899ac
commit b4300ac280
2 changed files with 4 additions and 3 deletions
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1
x86/iflags.ph
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@ -111,6 +111,7 @@ if_("AVXNECONVERT", "AVX exceptionless floating-point conversions");
if_("AVXVNNIINT8", "AVX Vector Neural Network 8-bit integer instructions");
if_("AVXIFMA", "AVX integer multiply and add");
if_("HRESET", "History reset");
if_("SMAP", "Supervisor Mode Access Prevention (SMAP)");
# Put these last to minimize their relevance
if_("OBSOLETE", "Instruction removed from architecture");

6
x86/insns.dat
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@ -3039,9 +3039,9 @@ RDSEED reg16 [m: o16 0f c7 /7] FUTURE
RDSEED reg32 [m: o32 0f c7 /7] FUTURE
RDSEED reg64 [m: o64 0f c7 /7] LONG,FUTURE
; Per AVX spec revision 14, document 319433-014
CLAC void [ 0f 01 ca] PRIV,FUTURE
STAC void [ 0f 01 cb] PRIV,FUTURE
;# Supervisor Mode Access Prevention (SMAP)
CLAC void [ np 0f 01 ca] SMAP,PRIV,FUTURE
STAC void [ np 0f 01 cb] SMAP,PRIV,FUTURE
;# VIA (Centaur) security instructions
XSTORE void [ 0f a7 c0] PENT,CYRIX