From 05310f31ca74673a96567fb14637b7d5d6c82ea5 Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Mon, 27 Mar 2023 10:36:45 +0200 Subject: xen/netback: don't do grant copy across page boundary Fix xenvif_get_requests() not to do grant copy operations across local page boundaries. This requires to double the maximum number of copy operations per queue, as each copy could now be split into 2. Make sure that struct xenvif_tx_cb doesn't grow too large. Cc: stable@vger.kernel.org Fixes: ad7f402ae4f4 ("xen/netback: Ensure protocol headers don't fall in the non-linear area") Signed-off-by: Juergen Gross Reviewed-by: Paul Durrant Signed-off-by: Paolo Abeni --- drivers/net/xen-netback/common.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/xen-netback/common.h') diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h index 3dbfc8a6924ed..1fcbd83f7ff2e 100644 --- a/drivers/net/xen-netback/common.h +++ b/drivers/net/xen-netback/common.h @@ -166,7 +166,7 @@ struct xenvif_queue { /* Per-queue data for xenvif */ struct pending_tx_info pending_tx_info[MAX_PENDING_REQS]; grant_handle_t grant_tx_handle[MAX_PENDING_REQS]; - struct gnttab_copy tx_copy_ops[MAX_PENDING_REQS]; + struct gnttab_copy tx_copy_ops[2 * MAX_PENDING_REQS]; struct gnttab_map_grant_ref tx_map_ops[MAX_PENDING_REQS]; struct gnttab_unmap_grant_ref tx_unmap_ops[MAX_PENDING_REQS]; /* passed to gnttab_[un]map_refs with pages under (un)mapping */ -- cgit v1.2.3