On 14/01/14 20:39, Zoltan Kiss wrote:
@@ -1677,6 +1793,31 @@ static void xenvif_idx_release(struct xenvif *vif, u16 pending_idx, vif->mmap_pages[pending_idx] = NULL; }+void xenvif_idx_unmap(struct xenvif *vif, u16 pending_idx) +{ + int ret; + struct gnttab_unmap_grant_ref tx_unmap_op; + + if (vif->grant_tx_handle[pending_idx] == NETBACK_INVALID_HANDLE) { + netdev_err(vif->dev, + "Trying to unmap invalid handle! pending_idx: %x\n", + pending_idx); + return; + } + gnttab_set_unmap_op(&tx_unmap_op, + idx_to_kaddr(vif, pending_idx), + GNTMAP_host_map, + vif->grant_tx_handle[pending_idx]); + ret = gnttab_unmap_refs(&tx_unmap_op, + &vif->mmap_pages[pending_idx], + 1); + + ret = HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, + &tx_unmap_op, + 1); + BUG_ON(ret); + vif->grant_tx_handle[pending_idx] = NETBACK_INVALID_HANDLE; +}
Awkward mistake, I forgot to delete the hypercall ... Even more interesting, it caused troubles only very rarely ...
Zoli -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
