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| author | Robert Mustacchi <rm@joyent.com> | 2019-05-13 22:45:10 +0000 |
|---|---|---|
| committer | Robert Mustacchi <rm@joyent.com> | 2019-05-17 13:55:07 +0000 |
| commit | a9cc46cf4c50667eb8eaf3af6c3bc4a74677b725 (patch) | |
| tree | 98999640b12deaf679af986dcb1b8303bc03b243 /usr/src/uts/intel/asm | |
| parent | 9907d578e7659d3b5a95811eccd1310078a43a81 (diff) | |
| download | illumos-joyent-a9cc46cf4c50667eb8eaf3af6c3bc4a74677b725.tar.gz | |
10953 Need mitigations for MDS
Reviewed by: John Levon <john.levon@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Approved by: Richard Lowe <richlowe@richlowe.net>
Diffstat (limited to 'usr/src/uts/intel/asm')
| -rw-r--r-- | usr/src/uts/intel/asm/cpu.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/usr/src/uts/intel/asm/cpu.h b/usr/src/uts/intel/asm/cpu.h index a96d8ab6b6..faaaea7c8e 100644 --- a/usr/src/uts/intel/asm/cpu.h +++ b/usr/src/uts/intel/asm/cpu.h @@ -22,6 +22,9 @@ * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ +/* + * Copyright 2019 Joyent, Inc. + */ #ifndef _ASM_CPU_H #define _ASM_CPU_H @@ -114,6 +117,12 @@ sti(void) "sti"); } +/* + * Any newer callers of halt need to make sure that they consider calling + * x86_md_clear() before calling this to deal with any potential issues with + * MDS. Because this version of hlt is also used in panic context, we do not + * unconditionally call x86_md_clear() here and require callers to do so. + */ extern __GNU_INLINE void i86_halt(void) { |