diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2020-08-17 08:12:19 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2020-08-17 08:12:19 +0000 |
| commit | 64609c1ec9abfb1a2d0801eae1b63f06bc82632c (patch) | |
| tree | 7cab654df64b78a1e76d169242ec82ce490efff1 /sys/arch/arm64/include | |
| parent | 5ebf90b5ba926a98b72d64850ba4f6507c9c158d (diff) | |
Enable PAN (Privileged Access Never) on CPUs that support it. This means
that user-space access from the kernel is not allowed for "normal"
load/store instructions. Only the special "unprivileged" load/store
instructions are allowed. We already use those in copyin(9) and copyout(9).
ok patrick@, drahn@, jsg@
Diffstat (limited to 'sys/arch/arm64/include')
| -rw-r--r-- | sys/arch/arm64/include/armreg.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/arch/arm64/include/armreg.h b/sys/arch/arm64/include/armreg.h index 54a02384510..05a5a37f9d1 100644 --- a/sys/arch/arm64/include/armreg.h +++ b/sys/arch/arm64/include/armreg.h @@ -1,4 +1,4 @@ -/* $OpenBSD: armreg.h,v 1.11 2020/06/05 22:14:25 kettenis Exp $ */ +/* $OpenBSD: armreg.h,v 1.12 2020/08/17 08:12:18 kettenis Exp $ */ /*- * Copyright (c) 2013, 2014 Andrew Turner * Copyright (c) 2015 The FreeBSD Foundation @@ -451,6 +451,7 @@ #define SCTLR_nTWI 0x00010000 #define SCTLR_nTWE 0x00040000 #define SCTLR_WXN 0x00080000 +#define SCTLR_SPAN 0x00800000 #define SCTLR_EOE 0x01000000 #define SCTLR_EE 0x02000000 #define SCTLR_UCI 0x04000000 @@ -478,6 +479,7 @@ #define PSR_D 0x00000200 #define PSR_IL 0x00100000 #define PSR_SS 0x00200000 +#define PSR_PAN 0x00400000 #define PSR_V 0x10000000 #define PSR_C 0x20000000 #define PSR_Z 0x40000000 |