diff -ur xorg-driver-video-fglrx-15.9.orig/common/lib/modules/fglrx/build_mod/firegl_public.c xorg-driver-video-fglrx-15.9/common/lib/modules/fglrx/build_mod/firegl_public.c
--- xorg-driver-video-fglrx-15.9.orig/common/lib/modules/fglrx/build_mod/firegl_public.c	2015-09-27 20:53:27.340395813 +0200
+++ xorg-driver-video-fglrx-15.9/common/lib/modules/fglrx/build_mod/firegl_public.c	2015-09-27 20:54:13.834346677 +0200
@@ -620,8 +628,13 @@
 
     len = snprintf(buf, request, "%d\n", major);
 #else
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)
+    seq_printf(m, "%d\n", major);
+    len = 0;
+#else
     len = seq_printf(m, "%d\n", major);
 #endif
+#endif
 
     KCL_DEBUG1(FN_FIREGL_PROC, "return len=%i\n",len);
 
@@ -1703,6 +1716,9 @@
 
 #if defined(__i386__) 
 #ifndef __HAVE_ARCH_CMPXCHG
+#ifndef __xg
+#define __xg(x) ((volatile long *)(x))
+#endif
 static inline 
 unsigned long __fgl_cmpxchg(volatile void *ptr, unsigned long old,            
                         unsigned long new, int size)                      
@@ -6422,6 +6442,48 @@
     return i;
 }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)
+/*
+ * Save processor xstate to xsave area.
+ */
+static void _copy_xregs_to_kernel(struct xregs_state *xstate)
+{
+        u64 mask = -1;
+        u32 lmask = mask;
+        u32 hmask = mask >> 32;
+        int err = 0;
+
+        /*WARN_ON(!alternatives_patched);*/
+
+        /*
+         * If xsaves is enabled, xsaves replaces xsaveopt because
+         * it supports compact format and supervisor states in addition to
+         * modified optimization in xsaveopt.
+         *
+         * Otherwise, if xsaveopt is enabled, xsaveopt replaces xsave
+         * because xsaveopt supports modified optimization which is not
+         * supported by xsave.
+         *
+         * If none of xsaves and xsaveopt is enabled, use xsave.
+         */
+        alternative_input_2(
+                "1:"XSAVE,
+                XSAVEOPT,
+                X86_FEATURE_XSAVEOPT,
+                XSAVES,
+                X86_FEATURE_XSAVES,
+                [xstate] "D" (xstate), "a" (lmask), "d" (hmask) :
+                "memory");
+        asm volatile("2:\n\t"
+                     xstate_fault(err)
+                     : "0" (err)
+                     : "memory");
+
+        /* We should never fault when copying to a kernel buffer: */
+        WARN_ON_FPU(err);
+}
+#endif
+
 /** \brief Generate UUID
  *  \param buf pointer to the generated UUID
  *  \return None
--- a/common/lib/modules/fglrx/build_mod/firegl_public.c	2016-03-30 23:11:47.406938094 +0200
+++ b/common/lib/modules/fglrx/build_mod/firegl_public.c	2016-03-30 23:35:12.447181546 +0200
@@ -6501,7 +6501,7 @@
       fpu_xsave(fpu);
       if (!(fpu->state->xsave.xsave_hdr.xstate_bv & XSTATE_FP))
 #else
-	  copy_xregs_to_kernel(&fpu->state.xsave);
+	  _copy_xregs_to_kernel(&fpu->state.xsave);
       if (!(fpu->state.xsave.header.xfeatures & XSTATE_FP))
 #endif
          return 1;