From: Zachary Amsden <zach@vmware.com>
To: akpm@osdl.org, chrisw@osdl.org, linux-kernel@vger.kernel.org,
davej@codemonkey.org.uk, hpa@zytor.com, Riley@Williams.Name,
pratap@vmware.com, zach@vmware.com, chrisl@vmware.com
Subject: [PATCH] 6/8 Move sensitive I/O instructions into the sub-arch layer
Date: Sat, 06 Aug 2005 00:20:14 -0700 [thread overview]
Message-ID: <42F464AE.80507@vmware.com> (raw)
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i386 Transparent paravirtualization subarch patch #6
Move I/O instructions into the sub-arch layer where they can be overridden.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Index: linux-2.6.13/include/asm-i386/io.h
===================================================================
--- linux-2.6.13.orig/include/asm-i386/io.h 2005-06-17 12:48:29.000000000 -0700
+++ linux-2.6.13/include/asm-i386/io.h 2005-08-02 17:14:28.000000000 -0700
@@ -4,6 +4,7 @@
#include <linux/config.h>
#include <linux/string.h>
#include <linux/compiler.h>
+#include <mach_io.h>
/*
* This file contains the definitions for the x86 IO instructions
@@ -341,11 +342,11 @@
#define BUILDIO(bwl,bw,type) \
static inline void out##bwl##_local(unsigned type value, int port) { \
- __asm__ __volatile__("out" #bwl " %" #bw "0, %w1" : : "a"(value), "Nd"(port)); \
+ __BUILDOUTINST(bwl,bw,value,port); \
} \
static inline unsigned type in##bwl##_local(int port) { \
unsigned type value; \
- __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) : "Nd"(port)); \
+ __BUILDININST(bwl,bw,value,port); \
return value; \
} \
static inline void out##bwl##_local_p(unsigned type value, int port) { \
@@ -368,10 +369,10 @@
return value; \
} \
static inline void outs##bwl(int port, const void *addr, unsigned long count) { \
- __asm__ __volatile__("rep; outs" #bwl : "+S"(addr), "+c"(count) : "d"(port)); \
+ __BUILDOUTSINST(bwl,addr,count,port); \
} \
static inline void ins##bwl(int port, void *addr, unsigned long count) { \
- __asm__ __volatile__("rep; ins" #bwl : "+D"(addr), "+c"(count) : "d"(port)); \
+ __BUILDINSINST(bwl,addr,count,port); \
}
BUILDIO(b,b,char)
Index: linux-2.6.13/include/asm-i386/mach-default/mach_io.h
===================================================================
--- linux-2.6.13.orig/include/asm-i386/mach-default/mach_io.h 2005-08-02 17:14:28.000000000 -0700
+++ linux-2.6.13/include/asm-i386/mach-default/mach_io.h 2005-08-02 17:14:28.000000000 -0700
@@ -0,0 +1,16 @@
+#ifndef _MACH_ASM_IO_H
+#define _MACH_ASM_IO_H
+
+#define __BUILDOUTINST(bwl,bw,value,port) \
+ __asm__ __volatile__("out" #bwl " %" #bw "0, %w1" : : "a"(value), "Nd"(port))
+#define __BUILDININST(bwl,bw,value,port) \
+ __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) : "Nd"(port))
+#define __BUILDOUTSINST(bwl,addr,count,port) \
+ __asm__ __volatile__("rep; outs" #bwl : "+S"(addr), "+c"(count) : "d"(port))
+#define __BUILDINSINST(bwl,addr,count,port) \
+ __asm__ __volatile__("rep; ins" #bwl \
+ : "+D"(addr), "+c"(count) \
+ : "d"(port) \
+ : "memory")
+
+#endif
next reply other threads:[~2005-08-06 7:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-06 7:20 Zachary Amsden [this message]
2005-08-07 1:11 ` [PATCH] 6/8 Move sensitive I/O instructions into the sub-arch layer Chris Wright
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