vfio/migration: bugfix queue isolation configuration

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4JA4W

----------------------------------------------------------------------

In the previous driver, the queue isolation configuration register of
the PF page was mixed with the queue isolation configuration register of
the VF page, which resulted in mismatch and error in the configuration
information during migration. Because the BIT0 of the queue isolation
register of the PF page is consistent with the value of the queue
isolation register of the VF page, Therefore, driver can only read
the registers of the VF page.
Signed-off-by: NLongfang Liu <liulongfang@huawei.com>
Signed-off-by: NYang Shen <shenyang39@huawei.com>
Reviewed-by: NHao Fang <fanghao11@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/crypto/hisilicon/migration/acc_vf_migration.c

@@ -381,12 +381,6 @@ static int qm_rw_regs_write(struct hisi_qm *qm, struct acc_vf_data *vf_data)
 		return ret;
 	}
 
-	ret = qm_write_reg(qm, QM_QUE_ISO_CFG_V, &vf_data->que_iso_cfg, 1);
-	if (ret) {
-		dev_err(dev, "failed to write QM_QUE_ISO_CFG_V!\n");
-		return ret;
-	}
-
 	ret = qm_write_reg(qm, QM_PAGE_SIZE, &vf_data->page_size, 1);
 	if (ret) {
 		dev_err(dev, "failed to write QM_PAGE_SIZE!\n");
@@ -518,6 +512,7 @@ static int vf_match_info_check(struct hisi_qm *qm,
 	struct acc_vf_migration *acc_vf_dev)
 {
 	struct acc_vf_data *vf_data = acc_vf_dev->vf_data;
+	struct hisi_qm *pf_qm = acc_vf_dev->pf_qm;
 	struct device *dev = &qm->pdev->dev;
 	u32 que_iso_state;
 	int ret;
@@ -541,7 +536,7 @@ static int vf_match_info_check(struct hisi_qm *qm,
 	}
 
 	/* vf isolation state check */
-	ret = qm_read_reg(qm, QM_QUE_ISO_CFG_V, &que_iso_state, 1);
+	ret = qm_read_reg(pf_qm, QM_QUE_ISO_CFG_V, &que_iso_state, 1);
 	if (ret) {
 		dev_err(dev, "failed to read QM_QUE_ISO_CFG_V!\n");
 		return ret;