From patchwork Fri Apr 12 21:59:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiong Wang X-Patchwork-Id: 1084954 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=netronome.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=netronome-com.20150623.gappssmtp.com header.i=@netronome-com.20150623.gappssmtp.com header.b="BoHHBDqS"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44gsJs0kRSz9s71 for ; Sat, 13 Apr 2019 08:00:29 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727308AbfDLWAX (ORCPT ); Fri, 12 Apr 2019 18:00:23 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:33398 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727281AbfDLWAU (ORCPT ); Fri, 12 Apr 2019 18:00:20 -0400 Received: by mail-wr1-f67.google.com with SMTP id q1so13777398wrp.0 for ; Fri, 12 Apr 2019 15:00:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netronome-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=/wylRhv97waN1hLNQRjtw5HFd7aLKXwfbfkeZTfcGns=; b=BoHHBDqSo9hYv0bkI611gzs7drYaYY98UgiHOhpRkui7YtSrsec1ln6rGGvug6NAYQ sps7qnbUecCFq81vL5n50ALFCCJiNkmrxyc1zqjo1sdjBcVUP/1GCTUPW/cN+kfQlfvF ZvQ/6n3300/0iqhWAmFna7p1h3BCi7P2XeQarh79q393JlCnIGhsMs0sIKqhgMHgGoHk bvIhvXVOvVWANqv/YnBq7cik2mzFgnOnXf/Vr64Z1D+IpDi85/hdTPCdusBop+HQlHqB 2bF1sFqjrM+YRzaJMtdkK9q2Edjic9YBVKlQRARPululNxm/Y5gcXEGso2IxN+5lK/HY TmSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=/wylRhv97waN1hLNQRjtw5HFd7aLKXwfbfkeZTfcGns=; b=H0C1Kd66J3z59YGj5IrNYpVnKvudo2q8s15JpN8bv072cMuMMmVLSqQZnBCRDEHEc8 v7NeWjSf9DeAeM77a69DMyvgnLMX02GBTqVOg8Y/sAFX7mWaF0HV2sGdxMMkUIv/tx3i kjwEqLOLLFmONhsNraSQ4Ci5/gMSGIO4+ixYZG9cO5nVug/YToGzZQ1RKGi29eBNM54i thT28jj1Cqz2+cnTiJvxVxylYFWeO8RAQFzbGc5iwRrJcuZstZaMvveCRTm27O8IcIuF Th9p4X2Nqt0Y8jJ4b71NX16op9KpGThyk8BTMaDa15SsbJ5l2Ex6orp6qIn4VLhZoMC7 ziCw== X-Gm-Message-State: APjAAAVXieqNMNjKTfozC6OR7Z3nmDZQQUBkqhDKW4JQpDQ4w7noa2TC 5PWMXzIXz/NBLzXWR5UwwVY7Fg== X-Google-Smtp-Source: APXvYqzrxDF22KbtqLIyFMfNsKL/hMb0KNXMx9QPeLg6JA5ur1aUZwyF1It0qkQSPIBfhk5gQpHUwg== X-Received: by 2002:adf:ea88:: with SMTP id s8mr12063138wrm.300.1555106418532; Fri, 12 Apr 2019 15:00:18 -0700 (PDT) Received: from cbtest28.netronome.com ([217.38.71.146]) by smtp.gmail.com with ESMTPSA id f1sm8490764wml.28.2019.04.12.15.00.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 12 Apr 2019 15:00:17 -0700 (PDT) From: Jiong Wang To: alexei.starovoitov@gmail.com, daniel@iogearbox.net Cc: bpf@vger.kernel.org, netdev@vger.kernel.org, oss-drivers@netronome.com, Jiong Wang , Martin Schwidefsky , Heiko Carstens Subject: [PATCH v3 bpf-next 15/19] s390: bpf: eliminate zero extension code-gen Date: Fri, 12 Apr 2019 22:59:48 +0100 Message-Id: <1555106392-20117-16-git-send-email-jiong.wang@netronome.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1555106392-20117-1-git-send-email-jiong.wang@netronome.com> References: <1555106392-20117-1-git-send-email-jiong.wang@netronome.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Cc: Martin Schwidefsky Cc: Heiko Carstens Signed-off-by: Jiong Wang --- arch/s390/net/bpf_jit_comp.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 51dd026..59592d7 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -299,9 +299,11 @@ static inline void reg_set_seen(struct bpf_jit *jit, u32 b1) #define EMIT_ZERO(b1) \ ({ \ - /* llgfr %dst,%dst (zero extend to 64 bit) */ \ - EMIT4(0xb9160000, b1, b1); \ - REG_SET_SEEN(b1); \ + if (fp->aux->no_verifier_zext) { \ + /* llgfr %dst,%dst (zero extend to 64 bit) */ \ + EMIT4(0xb9160000, b1, b1); \ + REG_SET_SEEN(b1); \ + } \ }) /* @@ -1282,6 +1284,11 @@ static int bpf_jit_prog(struct bpf_jit *jit, struct bpf_prog *fp) return 0; } +bool bpf_jit_hardware_zext(void) +{ + return false; +} + /* * Compile eBPF program "fp" */