gve: Remove obsolete checks that rely on page size.

These checks are safe to remove as they are no longer enforced by the
backend. Retaining them would require updating them to work differently
with page sizes larger than 4k.

Signed-off-by: Jordan Kimbrough <jrkim@google.com>
Signed-off-by: John Fraker <jfraker@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20231128002648.320892-4-jfraker@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: jfraker

drivers/net/ethernet/google/gve/gve_adminq.c

@@ -727,18 +727,7 @@ static int gve_set_desc_cnt(struct gve_priv *priv,
 			    struct gve_device_descriptor *descriptor)
 {
 	priv->tx_desc_cnt = be16_to_cpu(descriptor->tx_queue_entries);
-	if (priv->tx_desc_cnt * sizeof(priv->tx->desc[0]) < PAGE_SIZE) {
-		dev_err(&priv->pdev->dev, "Tx desc count %d too low\n",
-			priv->tx_desc_cnt);
-		return -EINVAL;
-	}
 	priv->rx_desc_cnt = be16_to_cpu(descriptor->rx_queue_entries);
-	if (priv->rx_desc_cnt * sizeof(priv->rx->desc.desc_ring[0])
-	    < PAGE_SIZE) {
-		dev_err(&priv->pdev->dev, "Rx desc count %d too low\n",
-			priv->rx_desc_cnt);
-		return -EINVAL;
-	}
 	return 0;
 }
 

drivers/net/ethernet/google/gve/gve_rx.c

@@ -211,9 +211,9 @@ static int gve_rx_alloc_ring(struct gve_priv *priv, int idx)
 {
 	struct gve_rx_ring *rx = &priv->rx[idx];
 	struct device *hdev = &priv->pdev->dev;
-	u32 slots, npages;
 	int filled_pages;
 	size_t bytes;
+	u32 slots;
 	int err;
 
 	netif_dbg(priv, drv, priv->dev, "allocating rx ring\n");
@@ -270,12 +270,6 @@ static int gve_rx_alloc_ring(struct gve_priv *priv, int idx)
 
 	/* alloc rx desc ring */
 	bytes = sizeof(struct gve_rx_desc) * priv->rx_desc_cnt;
-	npages = bytes / PAGE_SIZE;
-	if (npages * PAGE_SIZE != bytes) {
-		err = -EIO;
-		goto abort_with_q_resources;
-	}
-
 	rx->desc.desc_ring = dma_alloc_coherent(hdev, bytes, &rx->desc.bus,
 						GFP_KERNEL);
 	if (!rx->desc.desc_ring) {