From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f182.google.com (mail-qt0-f182.google.com [209.85.216.182]) by dpdk.org (Postfix) with ESMTP id 0E6806CC1 for ; Tue, 13 Sep 2016 20:36:10 +0200 (CEST) Received: by mail-qt0-f182.google.com with SMTP id 11so93818776qtc.0 for ; Tue, 13 Sep 2016 11:36:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=YiC5qDSvpqnzYMArdnAIjON/z3Kiy2jnUbLpOYYZ+Uc=; b=YGFZggZl5HoNrax/kC/FqMT+syqEeUhGQGm2d7NBwrPE1zakzgD2WTuRVAIK5GBEOT eDsks5puG5sGdCFKT0+xhvv4mD3ZhjnBXdyjhQwTzyd8UXqljQRXs/NNebG7zkNmh3hb osyW6rxZDUWuLRHzmPpdOaIPiQgPXAtO87HsQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=YiC5qDSvpqnzYMArdnAIjON/z3Kiy2jnUbLpOYYZ+Uc=; b=jV6wy5FBn0sUw3ZAecUREH+/cr7BFg2ST84FMi7h0Tp9tSQwHpKI3EzuR5JW4ntYMO dIySmmIMNpFsLlf3j/L+YpC11K/yvUCuBSRZojuqtSuZ+u0EGoJBgFuz6VUAkFJ+gquK gnZDfepmkk6M2r3g1bcN+ktiSTWNgn4PSvajWsJ29rIZVynm5wPk4ap6uAfCcAFbQkNG j+r7MegLBbTC6qWMdKwtQRjJW9sDZOD/svq+DQf8pD/z45SuKXNBllrP8cn0IMTIk5KG lmUw52VzE0WaKY8K3ZJgHZxo8BNZATBqMGbejjNHjITwcCj+c3+CucctYh/8tXn2Yvzg CoHA== X-Gm-Message-State: AE9vXwO08YzRoBmS16LCaAdAt9z8xo+wPM5xWN7Kikz0BDGyc5GyJ4DA06digwabWyEqSgf03WPCdri5j0fARh2K X-Received: by 10.200.38.241 with SMTP id 46mr2827880qtp.135.1473791769385; Tue, 13 Sep 2016 11:36:09 -0700 (PDT) MIME-Version: 1.0 Received: by 10.200.42.180 with HTTP; Tue, 13 Sep 2016 11:35:29 -0700 (PDT) In-Reply-To: <2164887.AxsOo2R2xv@xps13> References: <2139728.s9C09RKb8B@xps13> <2164887.AxsOo2R2xv@xps13> From: Michael Wildt Date: Tue, 13 Sep 2016 14:35:29 -0400 Message-ID: To: Thomas Monjalon Cc: users@dpdk.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: Re: [dpdk-users] Cross compile for ARM64 fails due to librte_vhost and pmdinfogen issues X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 13 Sep 2016 18:36:10 -0000 Hi Thomas, The Linaro gcc 4.9 is correct when it gets to __GNUC_MINOR__, used a test application. Its actually 4.9.2. Tried a newer Linaro tool chain, turned out to be a bit more complicated since that does not work on RHEL6, is however a success. With Linaro 5.3 one can cross compile dpdk fine with no errors, though the rte_byteorder.h file still points to arm's version, but pmdinfogen builds. Probably should still fix both issues just to keep the base clean. At least I have a workaround in the interim. Thanks for the help. Thanks, Michael On Tue, Sep 13, 2016 at 11:07 AM, Thomas Monjalon wrote: > 2016-09-13 07:45, Michael Wildt: > > Hi Thomas, > > > > Appreciate the assistance. Please see inline. > > > > > > On Tue, Sep 13, 2016 at 5:03 AM, Thomas Monjalon < > thomas.monjalon@6wind.com> > > wrote: > > > > > Hi, > > > > > > 2016-09-12 22:20, Michael Wildt: > > > > I'm attempting to cross compile DPDK on an x86 for an ARM64 target. > This > > > > fails in the following areas, using latest dpdk as of 9/12. When > > > compiling > > > > natively there are no issues. > > > > > > Your analysis below seems good. > > > Interestingly, I do not see such error (don't know why). > > > Please could you share the commands you are using? > > > > > > > Sure can. > > > > make config T=arm64-armv8a-linuxapp-gcc CROSS=/projects/ccxsw/ > > toolchains/gcc-linaro-aarch64-linux-gnu-4.9-2014.09_linux/ > bin/aarch64-linux-gnu- > > ARCH=arm64 > > > > make T=arm64-armv8a-linuxapp-gcc CROSS=/projects/ccxsw/ > > toolchains/gcc-linaro-aarch64-linux-gnu-4.9-2014.09_linux/ > bin/aarch64-linux-gnu- > > ARCH=arm64 RTE_KERNELDIR=/projects/kernel > > > > > > - librte_vhost, fails with: > > > > > > > > /projects/dpdk_latest/lib/librte_vhost/vhost_user/virtio- > > > net-user.c:250:23: > > > > error: array subscript is above array bounds [-Werror=array-bounds] > > > > rvq = dev->virtqueue[i * VIRTIO_QNUM + VIRTIO_RXQ]; > > > [...] > > > > - buildtools/pmdinfogen, fails with: > > > > > > > > == Build buildtools/pmdinfogen > > > > HOSTCC pmdinfogen.o > > > > /projects/dpdk_test_wget/dpdk-16.07/build/include/rte_byteorder.h: > > > > Assembler messages: > > > > /projects/dpdk_test_wget/dpdk-16.07/build/include/rte_ > byteorder.h:53: > > > > Error: no such instruction: `rev16 %bx,%bx' > > > [...] > > > > - The issue is due to the rte_byteorder.h file which gets > > > > symlink'ed with the ARM version at the beginning of the build. > > > > The pmdinfogen is always compiled for x86 thus the asm is failing. > > It is definitely something to fix. > In the meantime, you should be able to compile DPDK by using a more recent > toolchain. This error is in: > > /* fix missing __builtin_bswap16 for gcc older then 4.8 */ > #if !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) > > I know you are using gcc-4.9 but maybe __GNUC_MINOR__ is wrong in yours. > >