From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752660AbeEGRog (ORCPT ); Mon, 7 May 2018 13:44:36 -0400 Received: from mga06.intel.com ([134.134.136.31]:19341 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751931AbeEGRod (ORCPT ); Mon, 7 May 2018 13:44:33 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,375,1520924400"; d="scan'208";a="53156710" From: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= To: ast@fb.com, daniel@iogearbox.net, netdev@vger.kernel.org Cc: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Randy Dunlap , Stephen Rothwell , magnus.karlsson@intel.com, linux-next@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH bpf-next] xsk: fix 64-bit division Date: Mon, 7 May 2018 19:43:50 +0200 Message-Id: <20180507174350.3534-1-bjorn.topel@gmail.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Björn Töpel i386 builds report: net/xdp/xdp_umem.o: In function `xdp_umem_reg': xdp_umem.c:(.text+0x47e): undefined reference to `__udivdi3' This fix uses div_u64 instead of the GCC built-in. Fixes: c0c77d8fb787 ("xsk: add user memory registration support sockopt") Signed-off-by: Björn Töpel --- net/xdp/xdp_umem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c index 881dfdefe235..2b47a1dd7c6c 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c @@ -209,7 +209,7 @@ int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr) if ((addr + size) < addr) return -EINVAL; - nframes = size / frame_size; + nframes = (unsigned int)div_u64(size, frame_size); if (nframes == 0 || nframes > UINT_MAX) return -EINVAL; -- 2.14.1