Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes and cleanups from Michael Tsirkin:
 "This fixes the virtio-test tool, and improves the error handling for
  virtio-ccw"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio/s390: handle failures of READ_VQ_CONF ccw
  tools/virtio: propagate V=X to kernel build
  vhost: move features to core
  tools/virtio: fix build after 4.2 changes

4 files changed, 14 insertions, 1 deletions

diff --git a/tools/virtio/Makefile b/tools/virtio/Makefile
index 505ad51b3b51..39c89a5ea990 100644
--- a/tools/virtio/Makefile
+++ b/tools/virtio/Makefile
@@ -6,7 +6,7 @@ vringh_test: vringh_test.o vringh.o virtio_ring.o
 CFLAGS += -g -O2 -Werror -Wall -I. -I../include/ -I ../../usr/include/ -Wno-pointer-sign -fno-strict-overflow -fno-strict-aliasing -fno-common -MMD -U_FORTIFY_SOURCE
 vpath %.c ../../drivers/virtio ../../drivers/vhost
 mod:
-        ${MAKE} -C `pwd`/../.. M=`pwd`/vhost_test
+        ${MAKE} -C `pwd`/../.. M=`pwd`/vhost_test V=${V}
 .PHONY: all test mod clean
 clean:
         ${RM} *.o vringh_test virtio_test vhost_test/*.o vhost_test/.*.cmd \
diff --git a/tools/virtio/asm/barrier.h b/tools/virtio/asm/barrier.h
index aff61e13306c..26b7926bda88 100644
--- a/tools/virtio/asm/barrier.h
+++ b/tools/virtio/asm/barrier.h
@@ -3,6 +3,8 @@
 #define mb() __sync_synchronize()
 
 #define smp_mb()        mb()
+# define dma_rmb()      barrier()
+# define dma_wmb()      barrier()
 # define smp_rmb()      barrier()
 # define smp_wmb()      barrier()
 /* Weak barriers should be used. If not - it's a bug */
diff --git a/tools/virtio/linux/export.h b/tools/virtio/linux/export.h
new file mode 100644
index 000000000000..416875e29254
--- /dev/null
+++ b/tools/virtio/linux/export.h
@@ -0,0 +1,3 @@
+#define EXPORT_SYMBOL_GPL(sym) extern typeof(sym) sym
+#define EXPORT_SYMBOL(sym) extern typeof(sym) sym
+
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 1e8ce6979c1e..0a3da64638ce 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -22,6 +22,7 @@
 
 typedef unsigned long long dma_addr_t;
 typedef size_t __kernel_size_t;
+typedef unsigned int __wsum;
 
 struct page {
         unsigned long long dummy;
@@ -47,6 +48,13 @@ static inline void *kmalloc(size_t s, gfp_t gfp)
                 return __kmalloc_fake;
         return malloc(s);
 }
+static inline void *kzalloc(size_t s, gfp_t gfp)
+{
+        void *p = kmalloc(s, gfp);
+
+        memset(p, 0, s);
+        return p;
+}
 
 static inline void kfree(void *p)
 {