linux-kernel - [PATCH v3 05/19] vdpa_sim: remove the limit of IOTLB entries

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Message-Id: <20201203170511.216407-6-sgarzare@redhat.com>
Date:   Thu,  3 Dec 2020 18:04:57 +0100
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     virtualization@...ts.linux-foundation.org
Cc:     Stefan Hajnoczi <stefanha@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>, Oren Duer <oren@...dia.com>,
        Jason Wang <jasowang@...hat.com>,
        Laurent Vivier <lvivier@...hat.com>,
        Stefano Garzarella <sgarzare@...hat.com>,
        linux-kernel@...r.kernel.org, Max Gurtovoy <mgurtovoy@...dia.com>,
        Shahaf Shuler <shahafs@...dia.com>, Eli Cohen <elic@...dia.com>
Subject: [PATCH v3 05/19] vdpa_sim: remove the limit of IOTLB entries

The simulated devices can support multiple queues, so this limit
should be defined according to the number of queues supported by
the device.

Since we are in a simulator, let's simply remove that limit.

Suggested-by: Jason Wang <jasowang@...hat.com>
Acked-by: Jason Wang <jasowang@...hat.com>
Signed-off-by: Stefano Garzarella <sgarzare@...hat.com>
---
v3:
- used VHOST_IOTLB_UNLIMITED macro [Jason]
v2:
- added VDPASIM_IOTLB_LIMIT macro [Jason]
---
 drivers/vdpa/vdpa_sim/vdpa_sim.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index 295a770caac0..688aceaa6543 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -368,7 +368,7 @@ static struct vdpasim *vdpasim_create(void)
 	if (!vdpasim->vqs)
 		goto err_iommu;
 
-	vdpasim->iommu = vhost_iotlb_alloc(2048, 0);
+	vdpasim->iommu = vhost_iotlb_alloc(VHOST_IOTLB_UNLIMITED, 0);
 	if (!vdpasim->iommu)
 		goto err_iommu;
 
-- 
2.26.2