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From: Stefano Garzarella <sgarzare@redhat.com>
To: virtualization@lists.linux-foundation.org
Cc: Stefan Hajnoczi <stefanha@redhat.com>,
	linux-kernel@vger.kernel.org, Laurent Vivier <lvivier@redhat.com>,
	Max Gurtovoy <mgurtovoy@nvidia.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Eli Cohen <elic@nvidia.com>, Jason Wang <jasowang@redhat.com>
Subject: [PATCH v2 04/17] vdpa_sim: remove the limit of IOTLB entries
Date: Thu, 26 Nov 2020 15:49:37 +0100	[thread overview]
Message-ID: <20201126144950.92850-5-sgarzare@redhat.com> (raw)
In-Reply-To: <20201126144950.92850-1-sgarzare@redhat.com>

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@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
v2:
- added VDPASIM_IOTLB_LIMIT macro [Jason]
---
 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 ad72f7b1a4eb..40664d87f303 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -46,6 +46,7 @@ struct vdpasim_virtqueue {
 #define VDPASIM_QUEUE_MAX 256
 #define VDPASIM_DEVICE_ID 0x1
 #define VDPASIM_VENDOR_ID 0
+#define VDPASIM_IOTLB_LIMIT 0 /* unlimited */
 #define VDPASIM_VQ_NUM 0x2
 #define VDPASIM_NAME "vdpasim-netdev"
 
@@ -365,7 +366,7 @@ static struct vdpasim *vdpasim_create(void)
 	if (!vdpasim->vqs)
 		goto err_iommu;
 
-	vdpasim->iommu = vhost_iotlb_alloc(2048, 0);
+	vdpasim->iommu = vhost_iotlb_alloc(VDPASIM_IOTLB_LIMIT, 0);
 	if (!vdpasim->iommu)
 		goto err_iommu;
 
-- 
2.26.2


WARNING: multiple messages have this Message-ID (diff)
From: Stefano Garzarella <sgarzare@redhat.com>
To: virtualization@lists.linux-foundation.org
Cc: Laurent Vivier <lvivier@redhat.com>,
	Max Gurtovoy <mgurtovoy@nvidia.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	linux-kernel@vger.kernel.org,
	Stefan Hajnoczi <stefanha@redhat.com>,
	Eli Cohen <elic@nvidia.com>
Subject: [PATCH v2 04/17] vdpa_sim: remove the limit of IOTLB entries
Date: Thu, 26 Nov 2020 15:49:37 +0100	[thread overview]
Message-ID: <20201126144950.92850-5-sgarzare@redhat.com> (raw)
In-Reply-To: <20201126144950.92850-1-sgarzare@redhat.com>

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@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
v2:
- added VDPASIM_IOTLB_LIMIT macro [Jason]
---
 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 ad72f7b1a4eb..40664d87f303 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -46,6 +46,7 @@ struct vdpasim_virtqueue {
 #define VDPASIM_QUEUE_MAX 256
 #define VDPASIM_DEVICE_ID 0x1
 #define VDPASIM_VENDOR_ID 0
+#define VDPASIM_IOTLB_LIMIT 0 /* unlimited */
 #define VDPASIM_VQ_NUM 0x2
 #define VDPASIM_NAME "vdpasim-netdev"
 
@@ -365,7 +366,7 @@ static struct vdpasim *vdpasim_create(void)
 	if (!vdpasim->vqs)
 		goto err_iommu;
 
-	vdpasim->iommu = vhost_iotlb_alloc(2048, 0);
+	vdpasim->iommu = vhost_iotlb_alloc(VDPASIM_IOTLB_LIMIT, 0);
 	if (!vdpasim->iommu)
 		goto err_iommu;
 
-- 
2.26.2

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  parent reply	other threads:[~2020-11-26 14:50 UTC|newest]

Thread overview: 81+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-26 14:49 [PATCH v2 00/17] vdpa: generalize vdpa simulator Stefano Garzarella
2020-11-26 14:49 ` Stefano Garzarella
2020-11-26 14:49 ` [PATCH v2 01/17] vdpa: remove unnecessary 'default n' in Kconfig entries Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:01   ` Jason Wang
2020-11-30  3:01     ` Jason Wang
2020-11-26 14:49 ` [PATCH v2 02/17] vdpa_sim: remove unnecessary headers inclusion Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:04   ` Jason Wang
2020-11-30  3:04     ` Jason Wang
2020-11-30 11:10     ` Stefano Garzarella
2020-11-30 11:10       ` Stefano Garzarella
2020-11-26 14:49 ` [PATCH v2 03/17] vdpa_sim: remove hard-coded virtq count Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:05   ` Jason Wang
2020-11-30  3:05     ` Jason Wang
2020-11-26 14:49 ` Stefano Garzarella [this message]
2020-11-26 14:49   ` [PATCH v2 04/17] vdpa_sim: remove the limit of IOTLB entries Stefano Garzarella
2020-11-30  3:07   ` Jason Wang
2020-11-30  3:07     ` Jason Wang
2020-11-30 11:24     ` Stefano Garzarella
2020-11-30 11:24       ` Stefano Garzarella
2020-11-26 14:49 ` [PATCH v2 05/17] vdpa_sim: rename vdpasim_config_ops variables Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:07   ` Jason Wang
2020-11-30  3:07     ` Jason Wang
2020-11-26 14:49 ` [PATCH v2 06/17] vdpa_sim: add struct vdpasim_dev_attr for device attributes Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:09   ` Jason Wang
2020-11-30  3:09     ` Jason Wang
2020-11-26 14:49 ` [PATCH v2 07/17] vdpa_sim: add device id field in vdpasim_dev_attr Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:10   ` Jason Wang
2020-11-30  3:10     ` Jason Wang
2020-11-26 14:49 ` [PATCH v2 08/17] vdpa_sim: add supported_features " Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:14   ` Jason Wang
2020-11-30  3:14     ` Jason Wang
2020-11-26 14:49 ` [PATCH v2 09/17] vdpa_sim: add work_fn " Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:16   ` Jason Wang
2020-11-30  3:16     ` Jason Wang
2020-11-26 14:49 ` [PATCH v2 10/17] vdpa_sim: store parsed MAC address in a buffer Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:20   ` Jason Wang
2020-11-30  3:20     ` Jason Wang
2020-11-26 14:49 ` [PATCH v2 11/17] vdpa_sim: make 'config' generic and usable for any device type Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-26 14:49 ` [PATCH v2 12/17] vdpa_sim: add get_config callback in vdpasim_dev_attr Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:25   ` Jason Wang
2020-11-30  3:25     ` Jason Wang
2020-11-30 14:14     ` Stefano Garzarella
2020-11-30 14:14       ` Stefano Garzarella
2020-12-01  3:44       ` Jason Wang
2020-12-01  3:44         ` Jason Wang
2020-12-01 10:52         ` Stefano Garzarella
2020-12-01 10:52           ` Stefano Garzarella
2020-11-26 14:49 ` [PATCH v2 13/17] vdpa_sim: set vringh notify callback Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:27   ` Jason Wang
2020-11-30  3:27     ` Jason Wang
2020-11-30 14:16     ` Stefano Garzarella
2020-11-30 14:16       ` Stefano Garzarella
2020-11-26 14:49 ` [PATCH v2 14/17] vdpa_sim: use kvmalloc to allocate vdpasim->buffer Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-26 14:49 ` [PATCH v2 15/17] vdpa_sim: make vdpasim->buffer size configurable Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-26 14:49 ` [PATCH v2 16/17] vdpa_sim: split vdpasim_virtqueue's iov field in out_iov and in_iov Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:29   ` Jason Wang
2020-11-30  3:29     ` Jason Wang
2020-11-26 14:49 ` [PATCH v2 17/17] vdpa: split vdpasim to core and net modules Stefano Garzarella
2020-11-26 14:49   ` Stefano Garzarella
2020-11-30  3:31   ` Jason Wang
2020-11-30  3:31     ` Jason Wang
2020-11-30 14:17     ` Stefano Garzarella
2020-11-30 14:17       ` Stefano Garzarella
2020-11-26 15:12 ` [PATCH v2 00/17] vdpa: generalize vdpa simulator Max Gurtovoy
2020-11-26 15:24   ` Stefano Garzarella
2020-11-26 15:24     ` Stefano Garzarella

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