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Mon, 25 Jan 2021 06:35:17 -0800 (PST) X-Google-Smtp-Source: ABdhPJzjOj10KjstHcqeUxjCwhM4iH8vc/La8K5sEelfod8djvqokA+8/p6uMn26DxKQHPP1rMz7PE/jUI6BEN4FOOU= X-Received: by 2002:a05:6102:21cd:: with SMTP id r13mr891776vsg.5.1611585317705; Mon, 25 Jan 2021 06:35:17 -0800 (PST) MIME-Version: 1.0 References: <20201215021945.103396-1-leyi.rong@intel.com> <5859779.zrh4IzKrC7@thomas> <0b572eb2-8abe-e673-dd01-9db6cbaf3b0f@intel.com> In-Reply-To: <0b572eb2-8abe-e673-dd01-9db6cbaf3b0f@intel.com> From: David Marchand Date: Mon, 25 Jan 2021 15:35:06 +0100 Message-ID: To: "Kadam, Pallavi" Cc: Ferruh Yigit , Ali Alnubani , NBU-Contact-Thomas Monjalon , "Richardson, Bruce" , Tal Shnaiderman , Odi Assli , "Rong, Leyi" , "Zhang, Qi Z" , "Lu, Wenzhuo" , "Xing, Beilei" , "Menon, Ranjit" , "dev@dpdk.org" , Raslan Darawsheh Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dmarchan@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Subject: Re: [dpdk-dev] [PATCH v3 0/3] AVX512 vPMD on i40e X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Thu, Jan 21, 2021 at 6:02 AM Kadam, Pallavi wrote: > On 1/20/2021 11:21 PM, Ferruh Yigit wrote: > > And for the mingw, I have same result with Ali, I can reproduce with (Fedora MinGW 9.2.1-6.fc32). > > But different from the CI, I am getting the error [1] for all following files: > rte_random.c > i40e_rxtx_vec_sse.c > i40e_rxtx_vec_avx512.c > i40e_rxtx_vec_avx2.c > rte_ethdev.c > > [1] Error: invalid register for .seh_savexmm > > > There is a stackoverflow entry for it: > https://stackoverflow.com/questions/43152633/invalid-register-for-seh-savexmm-in-cygwin > > If I use '-fno-asynchronous-unwind-tables' as suggested there, the build works fine. > > So the problem may not be just 'i40e_rxtx_vec_avx512.c'. > > > If I change the machine type from 'native' to 'corei7' [2], the build error reduced to only 'i40e_rxtx_vec_avx512.c', so the problem seems happens when avx512 is supported by CPU, in this case compiler seems has a defect. > And since for 'i40e_rxtx_vec_avx512.c' the '-march=skylake-avx512' explicitly set can cause the problem seen in all machines. > > [2] > diff --git a/config/x86/cross-mingw b/config/x86/cross-mingw > index 4c15a7fa2e..7cee238add 100644 > --- a/config/x86/cross-mingw > +++ b/config/x86/cross-mingw > @@ -9,5 +9,5 @@ pkgconfig = 'x86_64-w64-mingw32-pkg-config' > [host_machine] > system = 'windows' > cpu_family = 'x86_64' > -cpu = 'native' > +cpu = 'corei7' > endian = 'little' > > @Ranjit, @Pallavi, > Are you building using mingw, and if so are you observing same problem? > Thanks Ferruh. > We usually build using Clang. However, we verify with mingw as well before submitting the patch. > As mentioned in the patch [1] comments, we replaced #include x86intrin.h with in the file i40e_rxtx_vec_avx2.c > And this helped fixing an error related to conflicting types for '__m_prefethw' with Clang on Windows. > I was able to build this patch using Clang as well as mingw. > [1] http://patches.dpdk.org/patch/84770/ > > I verified patch fix submitted by Rong, Leyi, it builds successfully with Clang. > However, I am getting same error "Error: invalid register for .seh_savexmm" using mingw for 'i40e_rxtx_vec_avx512.c' file. The patch I sent https://patchwork.dpdk.org/patch/86999/ is not enough. I have neither time nor environment to find a fix. For now I simply stopped checking mingw builds. Will it get fixed? -- David Marchand