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
next prev parent 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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