Commit db5db1a0 authored by Angus Chen's avatar Angus Chen Committed by Michael S. Tsirkin
Browse files

vdpa/ifcvf: fix the calculation of queuepair 



The q_pair_id to address a queue pair in the lm bar should be
calculated by queue_id / 2 rather than queue_id / nr_vring.

Fixes: 2ddae773 ("vDPA/ifcvf: detect and use the onboard number of queues directly")
Signed-off-by: default avatarAngus Chen <angus.chen@jaguarmicro.com>
Reviewed-by: default avatarJason Wang <jasowang@redhat.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarZhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20220923091013.191-1-angus.chen@jaguarmicro.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent f76349cf

drivers/vdpa/ifcvf/ifcvf_base.c

+2 −2
Original line number Diff line number Diff line
@@ -323,7 +323,7 @@ u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid) 
	u32 q_pair_id;



	ifcvf_lm = (struct ifcvf_lm_cfg __iomem *)hw->lm_cfg;

	q_pair_id = qid / hw->nr_vring;

	q_pair_id = qid / 2;

	avail_idx_addr = &ifcvf_lm->vring_lm_cfg[q_pair_id].idx_addr[qid % 2];

	last_avail_idx = vp_ioread16(avail_idx_addr);
@@ -337,7 +337,7 @@ int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num) 
	u32 q_pair_id;



	ifcvf_lm = (struct ifcvf_lm_cfg __iomem *)hw->lm_cfg;

	q_pair_id = qid / hw->nr_vring;

	q_pair_id = qid / 2;

	avail_idx_addr = &ifcvf_lm->vring_lm_cfg[q_pair_id].idx_addr[qid % 2];

	hw->vring[qid].last_avail_idx = num;

	vp_iowrite16(num, avail_idx_addr);