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Date: Sun, 30 Nov 2014 17:11:44 +0200 From: "Michael S. Tsirkin" <mst@...hat.com> To: linux-kernel@...r.kernel.org Cc: David Miller <davem@...emloft.net>, cornelia.huck@...ibm.com, rusty@....ibm.com, nab@...ux-iscsi.org, pbonzini@...hat.com, thuth@...ux.vnet.ibm.com, dahi@...ux.vnet.ibm.com, Jason Wang <jasowang@...hat.com>, kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org Subject: [PATCH v7 30/46] vhost/net: force len for TX to host endian vhost/net keeps a copy of some used ring but (ab)uses length field for internal house-keeping. This works because for tx used length is always 0. Suppress sparse errors: we use native endian-ness internally but never expose it to guest. Signed-off-by: Michael S. Tsirkin <mst@...hat.com> Reviewed-by: Jason Wang <jasowang@...hat.com> --- drivers/vhost/net.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 8dae2f7..dce5c58 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -48,15 +48,15 @@ MODULE_PARM_DESC(experimental_zcopytx, "Enable Zero Copy TX;" * status internally; used for zerocopy tx only. */ /* Lower device DMA failed */ -#define VHOST_DMA_FAILED_LEN 3 +#define VHOST_DMA_FAILED_LEN ((__force __virtio32)3) /* Lower device DMA done */ -#define VHOST_DMA_DONE_LEN 2 +#define VHOST_DMA_DONE_LEN ((__force __virtio32)2) /* Lower device DMA in progress */ -#define VHOST_DMA_IN_PROGRESS 1 +#define VHOST_DMA_IN_PROGRESS ((__force __virtio32)1) /* Buffer unused */ -#define VHOST_DMA_CLEAR_LEN 0 +#define VHOST_DMA_CLEAR_LEN ((__force __virtio32)0) -#define VHOST_DMA_IS_DONE(len) ((len) >= VHOST_DMA_DONE_LEN) +#define VHOST_DMA_IS_DONE(len) ((__force u32)(len) >= (__force u32)VHOST_DMA_DONE_LEN) enum { VHOST_NET_FEATURES = VHOST_FEATURES | -- MST -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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