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Message-Id: <1707517807-137331-1-git-send-email-steven.sistare@oracle.com>
Date: Fri, 9 Feb 2024 14:30:07 -0800
From: Steve Sistare <steven.sistare@...cle.com>
To: virtualization@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Cc: "Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>,
Eugenio Perez Martin <eperezma@...hat.com>,
Si-Wei Liu <si-wei.liu@...cle.com>,
Stefano Garzarella <sgarzare@...hat.com>,
Steve Sistare <steven.sistare@...cle.com>
Subject: [PATCH V2] vdpa_sim: reset must not run
vdpasim_do_reset sets running to true, which is wrong, as it allows
vdpasim_kick_vq to post work requests before the device has been
configured. To fix, do not set running until VIRTIO_CONFIG_S_DRIVER_OK
is set.
Fixes: 0c89e2a3a9d0 ("vdpa_sim: Implement suspend vdpa op")
Signed-off-by: Steve Sistare <steven.sistare@...cle.com>
Reviewed-by: Eugenio PĂ©rez <eperezma@...hat.com>
Acked-by: Jason Wang <jasowang@...hat.com>
---
drivers/vdpa/vdpa_sim/vdpa_sim.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index be2925d0d283..18584ce70bf0 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -160,7 +160,7 @@ static void vdpasim_do_reset(struct vdpasim *vdpasim, u32 flags)
}
}
- vdpasim->running = true;
+ vdpasim->running = false;
spin_unlock(&vdpasim->iommu_lock);
vdpasim->features = 0;
@@ -483,6 +483,7 @@ static void vdpasim_set_status(struct vdpa_device *vdpa, u8 status)
mutex_lock(&vdpasim->mutex);
vdpasim->status = status;
+ vdpasim->running = (status & VIRTIO_CONFIG_S_DRIVER_OK) != 0;
mutex_unlock(&vdpasim->mutex);
}
--
2.39.3
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