linux-kernel - [PATCH 1/2] tools/virtio: add dma barrier stubs

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Message-ID: <20180725134057.113423-1-mst@redhat.com>
Date:   Wed, 25 Jul 2018 16:45:22 +0300
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     khandual@...ux.vnet.ibm.com, Jason Wang <jasowang@...hat.com>,
        virtualization@...ts.linux-foundation.org
Subject: [PATCH 1/2] tools/virtio: add dma barrier stubs

Fixes: 55e49dc43a8 ("virtio_ring: switch to dma_XX barriers for rpmsg")
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 tools/virtio/asm/barrier.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/virtio/asm/barrier.h b/tools/virtio/asm/barrier.h
index 0ac3caf90877..d0351f83aebe 100644
--- a/tools/virtio/asm/barrier.h
+++ b/tools/virtio/asm/barrier.h
@@ -13,8 +13,8 @@
 } while (0);
 /* Weak barriers should be used. If not - it's a bug */
 # define mb() abort()
-# define rmb() abort()
-# define wmb() abort()
+# define dma_rmb() abort()
+# define dma_wmb() abort()
 #else
 #error Please fill in barrier macros
 #endif
-- 
MST