source: scripts/patches/linux-2.6-seg-5.patch@ ed3a13d4

linux/arch/i386/kernel/process.c

@@ -597 +597 @@
          * Save away %fs and %gs. No need to save %es and %ds, as
          * those are always kernel segments while inside the kernel.
          */
-        asm volatile("movl %%fs,%0":"=m" (*(int *)&prev->fs));
-        asm volatile("movl %%gs,%0":"=m" (*(int *)&prev->gs));
+        asm volatile("mov %%fs,%0":"=m" (prev->fs));
+        asm volatile("mov %%gs,%0":"=m" (prev->gs));
 
         /*
          * Restore %fs and %gs if needed.

linux/arch/i386/kernel/vm86.c

@@ -294 +294 @@
  */
         info->regs32->eax = 0;
         tsk->thread.saved_esp0 = tsk->thread.esp0;
-        asm volatile("movl %%fs,%0":"=m" (tsk->thread.saved_fs));
-        asm volatile("movl %%gs,%0":"=m" (tsk->thread.saved_gs));
+        asm volatile("mov %%fs,%0":"=m" (tsk->thread.saved_fs));
+        asm volatile("mov %%gs,%0":"=m" (tsk->thread.saved_gs));
 
         tss = &per_cpu(init_tss, get_cpu());
         tsk->thread.esp0 = (unsigned long) &info->VM86_TSS_ESP0;

linux/arch/x86_64/kernel/process.c

@@ -391 +391 @@
         p->thread.fs = me->thread.fs;
         p->thread.gs = me->thread.gs;
 
-        asm("movl %%gs,%0" : "=m" (p->thread.gsindex));
-        asm("movl %%fs,%0" : "=m" (p->thread.fsindex));
-        asm("movl %%es,%0" : "=m" (p->thread.es));
-        asm("movl %%ds,%0" : "=m" (p->thread.ds));
+        asm("mov %%gs,%0" : "=m" (p->thread.gsindex));
+        asm("mov %%fs,%0" : "=m" (p->thread.fsindex));
+        asm("mov %%es,%0" : "=m" (p->thread.es));
+        asm("mov %%ds,%0" : "=m" (p->thread.ds));
 
         if (unlikely(me->thread.io_bitmap_ptr != NULL)) { 
                 p->thread.io_bitmap_ptr = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
@@ -457 +457 @@
          * Switch DS and ES.
          * This won't pick up thread selector changes, but I guess that is ok.
          */
-        asm volatile("movl %%es,%0" : "=m" (prev->es)); 
+        asm volatile("mov %%es,%0" : "=m" (prev->es)); 
         if (unlikely(next->es | prev->es))
                 loadsegment(es, next->es); 
         
-        asm volatile ("movl %%ds,%0" : "=m" (prev->ds)); 
+        asm volatile ("mov %%ds,%0" : "=m" (prev->ds)); 
         if (unlikely(next->ds | prev->ds))
                 loadsegment(ds, next->ds);
 
@@ -472 +472 @@
          */
         { 
                 unsigned fsindex;
-                asm volatile("movl %%fs,%0" : "=g" (fsindex)); 
+                asm volatile("movl %%fs,%0" : "=r" (fsindex)); 
                 /* segment register != 0 always requires a reload. 
                    also reload when it has changed. 
                    when prev process used 64bit base always reload
@@ -493 +493 @@
         }
         { 
                 unsigned gsindex;
-                asm volatile("movl %%gs,%0" : "=g" (gsindex)); 
+                asm volatile("movl %%gs,%0" : "=r" (gsindex)); 
                 if (unlikely(gsindex | next->gsindex | prev->gs)) {
                         load_gs_index(next->gsindex);
                         if (gsindex)

linux/include/asm-i386/system.h

@@ -81 +81 @@
 #define loadsegment(seg,value)                  \
         asm volatile("\n"                       \
                 "1:\t"                          \
-                "movl %0,%%" #seg "\n"          \
+                "mov %0,%%" #seg "\n"           \
                 "2:\n"                          \
                 ".section .fixup,\"ax\"\n"      \
                 "3:\t"                          \
@@ -93 +93 @@
                 ".align 4\n\t"                  \
                 ".long 1b,3b\n"                 \
                 ".previous"                     \
-                : :"m" (*(unsigned int *)&(value)))
+                : :"m" (value))
 
 /*
  * Save a segment register away
  */
 #define savesegment(seg, value) \
-        asm volatile("movl %%" #seg ",%0":"=m" (*(int *)&(value)))
+        asm volatile("mov %%" #seg ",%0":"=m" (value))
 
 /*
  * Clear and set 'TS' bit respectively