From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C09D5C35273 for ; Tue, 5 Apr 2022 20:28:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232508AbiDEUYt (ORCPT ); Tue, 5 Apr 2022 16:24:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48170 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234220AbiDEOpn (ORCPT ); Tue, 5 Apr 2022 10:45:43 -0400 Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2B7612D085 for ; Tue, 5 Apr 2022 06:21:20 -0700 (PDT) Received: by mail-wm1-x32f.google.com with SMTP id k124-20020a1ca182000000b0038c9cf6e2a6so1655527wme.0 for ; Tue, 05 Apr 2022 06:21:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=4NHA+PjfR/jHNzlJKQyRBy3oCNNB8q2QtT7z2WQnLW8=; b=LQzV/QqTWZnV7zMJcnxyuHdv8/gJSVzbvgrsZgtsjC8qgiSQ5VCwkZxm6sbaV9WULE E9YOiSMufiIipXqqVuErYowFVU1/3OYY8ofgeeh04294HU/J0qea6euVuTqmpQEUzbAB JjbzG/To13BnH0Pc8pupkKVgUzW9nc9gDFOAGcb4O1FGMp3o0KJQnzp4EsLwp3wHiftl 2eJUJYWjOKXepg9X/MsMonzoVd0BTZXOP0Z2lTX6UWjkV9sXNMFiFLuquJaRUJfF5nLS UJO1gXy7hgPTPbu4hc7ZHXv442LPrxSkJvglmDzO+xHL5heE6Royl27xsSlFjPQDl0p4 VFFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=4NHA+PjfR/jHNzlJKQyRBy3oCNNB8q2QtT7z2WQnLW8=; b=L+Nr/B7lgo0nQJ5NfPBXVfpYHXRcyvT1QGUjEhG50Vs+wfYFr2StT6hKEzDSmEYhJo Ej7eco7+y13v4EzguYcn/Mhkx8Ks8wSmDlXifkeZeiaQXCt3YKK4lsuGbCWGuqEOW+om 0uh1k9i4vUVBuIQGc9LqRcaNEtMZIWDVKxTsfWZVdCM0JHxioLGhx75nSQr3J8VRpOyT A2MDu6C8P9AU8tKPVSwfSIpeNHwB76JF00HPy2oBpuv31V83oxcjlf4OWev3xJJSixyD /vYjJMSMpaL61rNxzldHIJRa+TyuRYEjsnMTtnkhPADqrRAFX08ALcBCN7XAtgC9JNuq 7slw== X-Gm-Message-State: AOAM530TnFFSMlLCl7xBD+T3F0bEJggRDkUV0DfiaTKIZsqdhWPl+ZH8 Pgk2C1CQF6FBvykz9NUTitW4xss4F22I8uTiBe7HgyoSAL0= X-Google-Smtp-Source: ABdhPJyNQocl5njgrySBr0EEAhVYvCgI8feiNYAQM7Bb/epE0m6KD4k6r60OlLImOdMlbeEncjUbx567bUWhhm15V+c= X-Received: by 2002:a05:600c:1797:b0:38e:70fa:4e4f with SMTP id x23-20020a05600c179700b0038e70fa4e4fmr3189050wmo.30.1649164879345; Tue, 05 Apr 2022 06:21:19 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Federico Di Pierro Date: Tue, 5 Apr 2022 15:21:08 +0200 Message-ID: Subject: Re: arm64 execve/clone sys_exit tracepoints To: linux-trace-users Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-trace-users@vger.kernel.org Hi! After a private conversation with an Arm engineer, it seems like there is no real "correct" behavior, i mean there is no default behavior among different architectures. In the end, arm64 shows just a different behavior from x86_64. Well, it seems like x86_64 is doing something different from other archs here indeed: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/kernel/process_64.c#n669 Given this is not a bug and there is no clear way to improve the situation, I consider this thread somewhat solved (I only desired to understand what was happening, and now I got it). Thanks everyone! Federico