From: "Michael S. Tsirkin" <mst@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: kernel test robot <rong.a.chen@intel.com>,
Max Gurtovoy <maxg@mellanox.com>,
Jason Wang <jasowang@redhat.com>,
virtualization@lists.linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
lkp@lists.01.org
Subject: [PATCH] vdpa_sim: init iommu lock
Date: Mon, 10 Aug 2020 08:48:39 -0400 [thread overview]
Message-ID: <20200810124813.1555677-1-mst@redhat.com> (raw)
The patch adding the iommu lock did not initialize it.
The struct is zero-initialized so this is mostly a problem
when using lockdep.
Reported-by: kernel test robot <rong.a.chen@intel.com>
Cc: Max Gurtovoy <maxg@mellanox.com>
Fixes: 0ea9ee430e74 ("vdpasim: protect concurrent access to iommu iotlb")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
drivers/vdpa/vdpa_sim/vdpa_sim.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index df3224b138ee..604d9d25ca47 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -358,6 +358,7 @@ static struct vdpasim *vdpasim_create(void)
INIT_WORK(&vdpasim->work, vdpasim_work);
spin_lock_init(&vdpasim->lock);
+ spin_lock_init(&vdpasim->iommu_lock);
dev = &vdpasim->vdpa.dev;
dev->coherent_dma_mask = DMA_BIT_MASK(64);
--
MST
next reply other threads:[~2020-08-10 12:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-10 12:48 Michael S. Tsirkin [this message]
2020-08-11 2:55 ` Jason Wang
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