diff -Nurp dkms-2.0.19.orig/dkms dkms-2.0.19/dkms
--- dkms-2.0.19.orig/dkms	2008-03-25 15:53:31.000000000 +0200
+++ dkms-2.0.19/dkms	2012-03-01 16:16:28.819144465 +0200
@@ -98,6 +98,10 @@
     if [ -n "$gz_modules" ]; then
 	[ -z "$delayed_gzip" ] && module_suffix=${module_suffix}.gz
     fi
+    grep -q '\.xz:' /lib/modules/$kernel_test/modules.dep 2>/dev/null && xz_modules=1
+    if [ -n "$xz_modules" ]; then
+	[ -z "$delayed_xz" ] && module_suffix=${module_suffix}.xz
+    fi
 }
 
 function set_kernel_source_dir ()
@@ -1444,11 +1448,17 @@
 	if [ -n "$gz_modules" ]; then
 	    gzip -9f $dkms_tree/$module/$module_version/${kernelver_array[0]}/${arch_array[0]}/module/${dest_module_name[$count]}$module_suffix
 	fi
+	if [ -n "$xz_modules" ]; then
+	    xz -6f $dkms_tree/$module/$module_version/${kernelver_array[0]}/${arch_array[0]}/module/${dest_module_name[$count]}$module_suffix
+	fi
 	count=$(($count+1))
     done
     if [ -n "$gz_modules" ]; then
 	module_suffix=${module_suffix}.gz
     fi
+    if [ -n "$xz_modules" ]; then
+	module_suffix=${module_suffix}.xz
+    fi
     # Run the post_build script
     if [ -n "$post_build" ] && [ -x `echo "$dkms_tree/$module/$module_version/source/$post_build" | sed 's/ .*//'` ]; then
 	echo $""
@@ -2658,7 +2668,7 @@
 	exit 2
     fi
 
-    # Figure out what kind of archive it is (tar.gz, tar, tar.bz, etc)
+    # Figure out what kind of archive it is (tar.gz, tar, tar.bz, tar.xz,  etc)
     local tar_options=""
     if `gzip -t $archive_location 2>/dev/null`; then
 	tar_options="${tar_options}z"
@@ -2666,6 +2676,9 @@
     if `bzip2 -t $archive_location 2>/dev/null`; then
 	tar_options="${tar_options}j"
     fi
+    if `xz -t $archive_location 2>/dev/null`; then
+	tar_options="${tar_options}J"
+    fi
 
     # Untar it into $tmp_location
     local temp_dir_name=`mktemp -d $tmp_location/dkms.XXXXXX`
@@ -3564,6 +3577,7 @@
 	    remove_module
 	    ;;
 	build)
+	    delayed_xz=1
 	    delayed_gzip=1
 	    build_module
 	    ;;
diff -Nurp dkms-2.0.19.orig/dkms_find-provides dkms-2.0.19/dkms_find-provides
--- dkms-2.0.19.orig/dkms_find-provides	2007-09-01 00:03:32.000000000 +0300
+++ dkms-2.0.19/dkms_find-provides	2012-03-01 16:12:37.547422342 +0200
@@ -63,7 +63,7 @@ TMPDIR=$(mktemp -d /tmp/dkms-findprovide
 trap "rm -rf $TMPDIR >/dev/null 2>&1"  QUIT EXIT HUP INT TERM
 
 modlist=
-for cand in $(grep -E '(/lib/modules/.+\.ko$|tgz$|tbz$|tar\.(gz|bz2)$)') $*; do
+for cand in $(grep -E '(/lib/modules/.+\.ko$|tgz$|tbz$|tar\.(gz|bz2|xz)$)') $*; do
     if echo $cand | grep -q -E '/lib/modules/.+\.ko$' > /dev/null 2>&1; then
         modlist="$modlist $cand"
     fi
@@ -75,6 +75,8 @@ for cand in $(grep -E '(/lib/modules/.+\
         opts=${opts}z
     elif bzip2 -t $cand >/dev/null 2>&1; then
         opts=${opts}j
+    elif xz -t $cand >/dev/null 2>&1; then
+        opts=${opts}J
     fi
     tar ${opts}f $cand -C $TMPDIR > /dev/null 2>&1
 done