From: deraadt <deraadt@openbsd.org>
Date: Tue, 30 May 2017 15:11:32 +0000 (+0000)
Subject: Support for SMAP is pretty small, so don't exclude it from the RAMDISKS.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=c61a50a09c8ec5ddf30640861af6af6a179de793;p=openbsd

Support for SMAP is pretty small, so don't exclude it from the RAMDISKS.
ok jsg visa
---

diff --git a/sys/arch/amd64/amd64/cpu.c b/sys/arch/amd64/amd64/cpu.c
index 57b75f22fe3..b76d0908b53 100644
--- a/sys/arch/amd64/amd64/cpu.c
+++ b/sys/arch/amd64/amd64/cpu.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpu.c,v 1.104 2017/05/27 12:21:50 tedu Exp $	*/
+/*	$OpenBSD: cpu.c,v 1.105 2017/05/30 15:11:32 deraadt Exp $	*/
 /* $NetBSD: cpu.c,v 1.1 2003/04/26 18:39:26 fvdl Exp $ */
 
 /*-
@@ -125,7 +125,6 @@ struct cpu_softc {
 	struct cpu_info *sc_info;	/* pointer to CPU info */
 };
 
-#ifndef SMALL_KERNEL
 void	replacesmap(void);
 
 extern long _stac;
@@ -148,7 +147,6 @@ replacesmap(void)
 
 	splx(s);
 }
-#endif /* !SMALL_KERNEL */
 
 #ifdef MULTIPROCESSOR
 int mp_cpu_start(struct cpu_info *);
@@ -496,14 +494,12 @@ cpu_init(struct cpu_info *ci)
 	cr4 = rcr4() | CR4_DEFAULT;
 	if (ci->ci_feature_sefflags_ebx & SEFF0EBX_SMEP)
 		cr4 |= CR4_SMEP;
-#ifndef SMALL_KERNEL
 	if (ci->ci_feature_sefflags_ebx & SEFF0EBX_SMAP)
 		cr4 |= CR4_SMAP;
 	if (ci->ci_feature_sefflags_ebx & SEFF0EBX_FSGSBASE)
 		cr4 |= CR4_FSGSBASE;
 	if (ci->ci_feature_sefflags_ecx & SEFF0ECX_UMIP)
 		cr4 |= CR4_UMIP;
-#endif
 	if (cpu_ecxfeature & CPUIDECX_XSAVE)
 		cr4 |= CR4_OSXSAVE;
 	lcr4(cr4);
diff --git a/sys/arch/amd64/amd64/identcpu.c b/sys/arch/amd64/amd64/identcpu.c
index b3c8dce2da3..0ee3e28b241 100644
--- a/sys/arch/amd64/amd64/identcpu.c
+++ b/sys/arch/amd64/amd64/identcpu.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: identcpu.c,v 1.85 2017/05/19 06:29:21 mlarkin Exp $	*/
+/*	$OpenBSD: identcpu.c,v 1.86 2017/05/30 15:11:32 deraadt Exp $	*/
 /*	$NetBSD: identcpu.c,v 1.1 2003/04/26 18:39:28 fvdl Exp $	*/
 
 /*
@@ -652,8 +652,8 @@ identifycpu(struct cpu_info *ci)
 			    ci->ci_dev->dv_xname);
 	}
 
-#ifndef SMALL_KERNEL
 	if (ci->ci_flags & CPUF_PRIMARY) {
+#ifndef SMALL_KERNEL
 		if (!strcmp(cpu_vendor, "AuthenticAMD") &&
 		    ci->ci_pnfeatset >= 0x80000007) {
 			CPUID(0x80000007, dummy, dummy, dummy, val);
@@ -668,6 +668,7 @@ identifycpu(struct cpu_info *ci)
 
 		if (cpu_ecxfeature & CPUIDECX_EST)
 			setperf_setup = est_init;
+#endif
 
 		if (cpu_ecxfeature & CPUIDECX_RDRAND)
 			has_rdrand = 1;
@@ -678,6 +679,7 @@ identifycpu(struct cpu_info *ci)
 		if (ci->ci_feature_sefflags_ebx & SEFF0EBX_SMAP)
 			replacesmap();
 	}
+#ifndef SMALL_KERNEL
 	if (!strncmp(mycpu_model, "Intel", 5)) {
 		u_int32_t cflushsz;
 
diff --git a/sys/arch/amd64/include/cpufunc.h b/sys/arch/amd64/include/cpufunc.h
index 3e3b104c239..14131ad0732 100644
--- a/sys/arch/amd64/include/cpufunc.h
+++ b/sys/arch/amd64/include/cpufunc.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpufunc.h,v 1.18 2017/05/27 12:21:50 tedu Exp $	*/
+/*	$OpenBSD: cpufunc.h,v 1.19 2017/05/30 15:11:32 deraadt Exp $	*/
 /*	$NetBSD: cpufunc.h,v 1.3 2003/05/08 10:27:43 fvdl Exp $	*/
 
 /*-
@@ -132,11 +132,9 @@ lcr4(u_int val)
 static __inline u_int
 rcr4(void)
 {
-	u_int val;
 	u_int64_t val64;
 	__asm volatile("movq %%cr4,%0" : "=r" (val64));
-	val = val64;
-	return val;
+	return (u_int) val64;
 }
 
 static __inline void
diff --git a/sys/arch/i386/i386/cpu.c b/sys/arch/i386/i386/cpu.c
index 9d4f16fde1b..e56f8b45b3d 100644
--- a/sys/arch/i386/i386/cpu.c
+++ b/sys/arch/i386/i386/cpu.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpu.c,v 1.83 2017/05/27 12:21:50 tedu Exp $	*/
+/*	$OpenBSD: cpu.c,v 1.84 2017/05/30 15:11:32 deraadt Exp $	*/
 /* $NetBSD: cpu.c,v 1.1.2.7 2000/06/26 02:04:05 sommerfeld Exp $ */
 
 /*-
@@ -170,7 +170,6 @@ struct cfdriver cpu_cd = {
 	NULL, "cpu", DV_DULL /* XXX DV_CPU */
 };
 
-#ifndef SMALL_KERNEL
 void	replacesmap(void);
 
 extern int _stac;
@@ -195,7 +194,6 @@ replacesmap(void)
 
 	splx(s);
 }
-#endif /* !SMALL_KERNEL */
 
 int
 cpu_match(struct device *parent, void *match, void *aux)
@@ -385,12 +383,10 @@ cpu_init(struct cpu_info *ci)
 
 	if (ci->ci_feature_sefflags_ebx & SEFF0EBX_SMEP)
 		cr4 |= CR4_SMEP;
-#ifndef SMALL_KERNEL
 	if (ci->ci_feature_sefflags_ebx & SEFF0EBX_SMAP)
 		cr4 |= CR4_SMAP;
 	if (ci->ci_feature_sefflags_ecx & SEFF0ECX_UMIP)
 		cr4 |= CR4_UMIP;
-#endif
 
 	/*
 	 * If we have FXSAVE/FXRESTOR, use them.
diff --git a/sys/arch/i386/i386/locore.s b/sys/arch/i386/i386/locore.s
index 805e75f7c94..bf1e847bbcb 100644
--- a/sys/arch/i386/i386/locore.s
+++ b/sys/arch/i386/i386/locore.s
@@ -1,4 +1,4 @@
-/*	$OpenBSD: locore.s,v 1.173 2017/05/12 08:46:28 mpi Exp $	*/
+/*	$OpenBSD: locore.s,v 1.174 2017/05/30 15:11:32 deraadt Exp $	*/
 /*	$NetBSD: locore.s,v 1.145 1996/05/03 19:41:19 christos Exp $	*/
 
 /*-
@@ -59,7 +59,6 @@
 #include <machine/i82489reg.h>
 #endif
 
-#ifndef SMALL_KERNEL
 /*
  * As stac/clac SMAP instructions are 3 bytes, we want the fastest
  * 3 byte nop sequence possible here.  This will be replaced by
@@ -77,14 +76,6 @@
 			SMAP_NOP			;\
 			CODEPATCH_END(CPTAG_CLAC)
 
-#else
-
-#define SMAP_STAC
-#define SMAP_CLAC
-
-#endif
-
-
 /*
  * override user-land alignment before including asm.h
  */
diff --git a/sys/arch/i386/i386/machdep.c b/sys/arch/i386/i386/machdep.c
index 6effaeaf1f1..2cf28746d3a 100644
--- a/sys/arch/i386/i386/machdep.c
+++ b/sys/arch/i386/i386/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.601 2017/05/18 09:20:06 kettenis Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.602 2017/05/30 15:11:32 deraadt Exp $	*/
 /*	$NetBSD: machdep.c,v 1.214 1996/11/10 03:16:17 thorpej Exp $	*/
 
 /*-
@@ -2031,10 +2031,8 @@ identifycpu(struct cpu_info *ci)
 			has_rdrand = 1;
 		if (ci->ci_feature_sefflags_ebx & SEFF0EBX_RDSEED)
 			has_rdseed = 1;
-#ifndef SMALL_KERNEL
 		if (ci->ci_feature_sefflags_ebx & SEFF0EBX_SMAP)
 			replacesmap();
-#endif
 	}
 
 #ifndef SMALL_KERNEL