Module Name: src
Committed By: riastradh
Date: Mon Dec 27 10:41:57 UTC 2021
Modified Files:
src/sys/external/bsd/common/include/asm: barrier.h
Log Message:
linux: Define mb/wmb/rmb as mfence/sfence/lfence on i386 too.
Not the same as membar_*; drm uses mb to order special instructions
like clflush which require mfence for ordering.
To generate a diff of this commit:
cvs rdiff -u -r1.11 -r1.12 src/sys/external/bsd/common/include/asm/barrier.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/common/include/asm/barrier.h
diff -u src/sys/external/bsd/common/include/asm/barrier.h:1.11 src/sys/external/bsd/common/include/asm/barrier.h:1.12
--- src/sys/external/bsd/common/include/asm/barrier.h:1.11 Sun Dec 19 12:25:20 2021
+++ src/sys/external/bsd/common/include/asm/barrier.h Mon Dec 27 10:41:57 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: barrier.h,v 1.11 2021/12/19 12:25:20 riastradh Exp $ */
+/* $NetBSD: barrier.h,v 1.12 2021/12/27 10:41:57 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -46,7 +46,7 @@
#define mb() __asm __volatile ("dsb sy" ::: "memory")
#define wmb() __asm __volatile ("dsb st" ::: "memory")
#define rmb() __asm __volatile ("dsb ld" ::: "memory")
-#elif defined(__x86_64__)
+#elif defined(__i386__) || defined(__x86_64__)
#include <x86/cpufunc.h>
#define mb() x86_mfence()
#define wmb() x86_sfence()
