From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 97D8E1382C5 for ; Sat, 6 Jan 2018 00:26:51 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id C30DAE091D; Sat, 6 Jan 2018 00:26:45 +0000 (UTC) Received: from mail-oi0-x229.google.com (mail-oi0-x229.google.com [IPv6:2607:f8b0:4003:c06::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 649F7E08D0 for ; Sat, 6 Jan 2018 00:26:45 +0000 (UTC) Received: by mail-oi0-x229.google.com with SMTP id j14so4175021oih.3 for ; Fri, 05 Jan 2018 16:26:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=so0lwO4cnKV4JZkzcW+LI5emfaRfO4oZifFnqhnm5aI=; b=jpu2V9QhivqnfiBX4MsH9L7IA926K0vGyiMjDUtCEAUcbj3T2fSMcQb957LB5gEax8 /r0Xwn5d+y2S7rQx+B2ik4Eg5A7ZB/LPakFcrEJRwoFb1m1+yaVEQdzja6bzEn8ElE9z zpINgRlCBxWPAPFOteQOy0yAogkkzcObldwQtpKHliRm07ebsK5z1QcsPbHWgtJvvyTs GoTZrhZLW5V6DWGXt+03CzLctyagoBBULQgRDSgrtw+hbt1stO+56Fvhn7Ota9SgsEd+ AM1XDFL307IGt2katcoHbo4KIMXUmKMjyry/i3erV4gC/rGcSOQXelo7RaWGaJlo9U3W uA7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=so0lwO4cnKV4JZkzcW+LI5emfaRfO4oZifFnqhnm5aI=; b=gZPWpHpwpgDZH9xORX8R09TQ5b/mBsvBkCKQ4lr3NbrAEZ3U9gIFzSMiWBMIOqjxEB JugsoQLijvixSe/1P30ocl5u4Km85gUZ8H5NAIgjwspJFwr3KgRg0RfOg1eaz4HCgukz 7JDyepW6ctbqY9kal6KaMfw03TMYJ54LpQ1upRwjaIXpiqG4bGZfhUGmt7VjUya4YA2Q Q6uPo74tDrpD6CZZ8AaZzFecLfto8pI/ZzduLzGLjl/JKLeVVrbO609jE3pUEOaNZbvY Ldsr6pd9BgRLDlFh7TA23B/GLrmOG4oGFAq6GtNpZSZKI+CsWqKMrIfMA3OzWdNbd+Ka 4ZAw== X-Gm-Message-State: AKwxyteJ5YpXjHPFN1nw4N+WdgjDIVJprDlDGdNeBNpV6UywJOnv7HiJ NE8oH72lwKw8taeccvpeTz+ohdj89VL8CAeRhJbj0Wta X-Google-Smtp-Source: ACJfBosFiYdbRdK12th2vmjqY5w9y+Ncc1j7/dZJr+p8o8+g2MCe4W2081UFXc57t0HmeSF6pSgxBlBZB7mAYfA6Doc= X-Received: by 10.202.49.207 with SMTP id x198mr2343334oix.132.1515198404410; Fri, 05 Jan 2018 16:26:44 -0800 (PST) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.157.19.65 with HTTP; Fri, 5 Jan 2018 16:26:43 -0800 (PST) In-Reply-To: <1544555.tdgMk6EmPg@peak> References: <1881593.SvZJgh6QS2@peak> <20180105180410.rh33vz2vdvgzjrn4@matica.foolinux.mooo.com> <1544555.tdgMk6EmPg@peak> From: Adam Carter Date: Sat, 6 Jan 2018 11:26:43 +1100 Message-ID: Subject: Re: [gentoo-user] Re: Expect a ~15% average slowdown if you use an Intel processor To: gentoo-user@lists.gentoo.org Content-Type: multipart/alternative; boundary="001a113cede8a8c5840562109e11" X-Archives-Salt: a48a791c-cb9b-4433-ae74-697d86155bd9 X-Archives-Hash: bc63fe0afd05672fc62fa8d24962cc19 --001a113cede8a8c5840562109e11 Content-Type: text/plain; charset="UTF-8" > > > So, HAVE_EBPF_JIT=y just means that BPF JIT _can_ be done on x86. There > > is a separate BPF_JIT setting to actually enable it. > > Well, that doesn't seem to be present here. Just the HAVE_ symbol. Careful, there's BPF and EBPF. $ zgrep BPF /proc/config.gz CONFIG_CGROUP_BPF=y CONFIG_BPF=y CONFIG_BPF_SYSCALL=y # CONFIG_NETFILTER_XT_MATCH_BPF is not set # CONFIG_NET_CLS_BPF is not set # CONFIG_NET_ACT_BPF is not set # CONFIG_BPF_JIT is not set # CONFIG_BPF_STREAM_PARSER is not set CONFIG_HAVE_EBPF_JIT=y # CONFIG_TEST_BPF is not set --001a113cede8a8c5840562109e11 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
<= div class=3D"gmail_quote">
> So, HAVE_EBPF_JIT=3Dy just means that BPF JIT = _can_ be done on x86.=C2=A0 There
> is a separate BPF_JIT setting to actually enable it.

Well, that doesn't seem to be present here. Just the HAVE_ symbo= l.

Careful, there's BPF and EBPF.
<= /div>

$ zgrep BPF /proc/config.gz
CONFIG_CGROUP_BPF= =3Dy
CONFIG_BPF=3Dy
CONFIG_BPF_SYSCALL=3Dy
# CONFIG_NETFILTER_XT_M= ATCH_BPF is not set
# CONFIG_NET_CLS_BPF is not set
# CONFIG_NET_ACT_= BPF is not set
# CONFIG_BPF_JIT is not set
# CONFIG_BPF_STREAM_PARSER= is not set
CONFIG_HAVE_EBPF_JIT=3Dy
# CONFIG_TEST_BPF is not set
=
--001a113cede8a8c5840562109e11--