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From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, jasowang@redhat.com,
	virtualization@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: netdev@vger.kernel.org, xieyongji@bytedance.com, stefanha@redhat.com
Subject: [PATCH 2/2] vdpa: vp_vdpa: don't use hard-coded maximum virtqueue size
Date: Mon,  5 Jul 2021 15:19:10 +0800	[thread overview]
Message-ID: <20210705071910.31965-2-jasowang@redhat.com> (raw)
In-Reply-To: <20210705071910.31965-1-jasowang@redhat.com>

This patch switch to read virtqueue size from the capability instead
of depending on the hardcoded value. This allows the per virtqueue
size could be advertised.

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 drivers/vdpa/virtio_pci/vp_vdpa.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/vdpa/virtio_pci/vp_vdpa.c b/drivers/vdpa/virtio_pci/vp_vdpa.c
index 2926641fb586..198f7076e4d9 100644
--- a/drivers/vdpa/virtio_pci/vp_vdpa.c
+++ b/drivers/vdpa/virtio_pci/vp_vdpa.c
@@ -18,7 +18,6 @@
 #include <linux/virtio_pci.h>
 #include <linux/virtio_pci_modern.h>
 
-#define VP_VDPA_QUEUE_MAX 256
 #define VP_VDPA_DRIVER_NAME "vp_vdpa"
 #define VP_VDPA_NAME_SIZE 256
 
@@ -197,7 +196,10 @@ static void vp_vdpa_set_status(struct vdpa_device *vdpa, u8 status)
 
 static u16 vp_vdpa_get_vq_num_max(struct vdpa_device *vdpa, u16 qid)
 {
-	return VP_VDPA_QUEUE_MAX;
+	struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
+	struct virtio_pci_modern_device *mdev = &vp_vdpa->mdev;
+
+	return vp_modern_get_queue_size(mdev, qid);
 }
 
 static int vp_vdpa_get_vq_state(struct vdpa_device *vdpa, u16 qid,
-- 
2.25.1


  reply	other threads:[~2021-07-05  7:19 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-05  7:19 [PATCH 1/2] vdpa: support per virtqueue max queue size Jason Wang
2021-07-05  7:19 ` Jason Wang [this message]
2021-07-05  7:26   ` [PATCH 2/2] vdpa: vp_vdpa: don't use hard-coded maximum virtqueue size Michael S. Tsirkin
2021-07-05  7:29     ` Jason Wang
2021-07-05 17:59       ` Michael S. Tsirkin
2021-07-06  2:30         ` Jason Wang
2021-07-06 13:14 ` [PATCH 1/2] vdpa: support per virtqueue max queue size Stefan Hajnoczi
2021-07-07  4:04 ` Yongji Xie
2021-07-07  5:38   ` Jason Wang

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