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Message-ID: <c69b269bd53b79aba852a124e96afdb8e64d1c82.1304541919.git.mst@redhat.com>
Date: Wed, 4 May 2011 23:50:52 +0300
From: "Michael S. Tsirkin" <mst@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Rusty Russell <rusty@...tcorp.com.au>,
Carsten Otte <cotte@...ibm.com>,
Christian Borntraeger <borntraeger@...ibm.com>,
linux390@...ibm.com, Martin Schwidefsky <schwidefsky@...ibm.com>,
Heiko Carstens <heiko.carstens@...ibm.com>,
Shirley Ma <xma@...ibm.com>, lguest@...ts.ozlabs.org,
linux-kernel@...r.kernel.org,
virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
linux-s390@...r.kernel.org, kvm@...r.kernel.org,
Krishna Kumar <krkumar2@...ibm.com>,
Tom Lendacky <tahm@...ux.vnet.ibm.com>, steved@...ibm.com,
habanero@...ux.vnet.ibm.com
Subject: [PATCH 03/18] vhost: fix 64 bit features
Update vhost_has_feature to make it work correctly for bit > 32.
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
drivers/vhost/vhost.h | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index b3363ae..0f1bf33 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -117,7 +117,7 @@ struct vhost_dev {
struct vhost_memory __rcu *memory;
struct mm_struct *mm;
struct mutex mutex;
- unsigned acked_features;
+ u64 acked_features;
struct vhost_virtqueue *vqs;
int nvqs;
struct file *log_file;
@@ -169,14 +169,14 @@ enum {
(1 << VIRTIO_NET_F_MRG_RXBUF),
};
-static inline int vhost_has_feature(struct vhost_dev *dev, int bit)
+static inline bool vhost_has_feature(struct vhost_dev *dev, int bit)
{
- unsigned acked_features;
+ u64 acked_features;
/* TODO: check that we are running from vhost_worker or dev mutex is
* held? */
acked_features = rcu_dereference_index_check(dev->acked_features, 1);
- return acked_features & (1 << bit);
+ return acked_features & (1ull << bit);
}
#endif
--
1.7.5.53.gc233e
--
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