[Xen-changelog] Remove automatic I/O-fault handling in XenLinux. It's now

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 68d72ac55fe5781a5f6019ee6f89e61e05536218
# Parent  d3b10a2a82d47bb3e52faf2fa4ba27217f486c54
Remove automatic I/O-fault handling in XenLinux. It's now
handled by Xen itself.

Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>

diff -r d3b10a2a82d4 -r 68d72ac55fe5 
linux-2.6-xen-sparse/include/asm-xen/asm-i386/io.h
--- a/linux-2.6-xen-sparse/include/asm-xen/asm-i386/io.h        Tue Dec 20 
17:16:24 2005
+++ b/linux-2.6-xen-sparse/include/asm-xen/asm-i386/io.h        Tue Dec 20 
17:34:58 2005
@@ -309,15 +309,8 @@
 
 #ifdef SLOW_IO_BY_JUMPING
 #define __SLOW_DOWN_IO "jmp 1f; 1: jmp 1f; 1:"
-#elif defined(__UNSAFE_IO__)
+#else
 #define __SLOW_DOWN_IO "outb %%al,$0x80;"
-#else
-#define __SLOW_DOWN_IO "\n1: outb %%al,$0x80\n"                \
-                      "2:\n"                           \
-                      ".section __ex_table,\"a\"\n\t"  \
-                      ".align 4\n\t"                   \
-                      ".long 1b,2b\n"                  \
-                      ".previous"
 #endif
 
 static inline void slow_down_io(void) {
@@ -362,8 +355,7 @@
 #endif
 
 
-#if __UNSAFE_IO__
-#define ____BUILDIO(bwl,bw,type) \
+#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)); \
 } \
@@ -371,35 +363,7 @@
        unsigned type value; \
        __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) : 
"Nd"(port)); \
        return value; \
-}
-#else
-#define ____BUILDIO(bwl,bw,type) \
-static inline void out##bwl##_local(unsigned type value, int port) { \
-       __asm__ __volatile__("1: out" #bwl " %" #bw "0, %w1\n"          \
-                            "2:\n"                                     \
-                            ".section __ex_table,\"a\"\n\t"            \
-                            ".align 4\n\t"                             \
-                            ".long 1b,2b\n"                            \
-                            ".previous" : : "a"(value), "Nd"(port));   \
-} \
-static inline unsigned type in##bwl##_local(int port) { \
-       unsigned type value; \
-       __asm__ __volatile__("1:in" #bwl " %w1, %" #bw "0\n"            \
-                            "2:\n"                                     \
-                            ".section .fixup,\"ax\"\n"                 \
-                            "3: mov" #bwl " $~0,%" #bw "0\n\t"         \
-                            "jmp 2b\n"                                 \
-                            ".previous\n"                              \
-                            ".section __ex_table,\"a\"\n\t"            \
-                            ".align 4\n\t"                             \
-                            ".long 1b,3b\n"                            \
-                            ".previous" : "=a"(value) : "Nd"(port));   \
-       return value; \
-}
-#endif
-
-#define BUILDIO(bwl,bw,type) \
-____BUILDIO(bwl,bw,type) \
+} \
 static inline void out##bwl##_local_p(unsigned type value, int port) { \
        out##bwl##_local(value, port); \
        slow_down_io(); \

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