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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3ADDCC10F14 for ; Fri, 12 Apr 2019 22:00:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0A560218D2 for ; Fri, 12 Apr 2019 22:00:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=netronome-com.20150623.gappssmtp.com header.i=@netronome-com.20150623.gappssmtp.com header.b="BoHHBDqS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727302AbfDLWAW (ORCPT ); Fri, 12 Apr 2019 18:00:22 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:36885 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727285AbfDLWAU (ORCPT ); Fri, 12 Apr 2019 18:00:20 -0400 Received: by mail-wr1-f66.google.com with SMTP id w10so13753040wrm.4 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=aXEVkAeKjucN9djH4On/pgRo0qB16US9H1nPPTJxcT4Jo/IgooT9o1YYwxnHvutI7F Z2eM3pvWe05xuxBHPGNMxxx95/jmrcgP/OyEcyHNPFaeoaqVxQ7RNAaK9FwVV/q4AyaW 0Kl3lHyQtuoLi/CwwN7Pk7xePNAW/TUQVn1ON8RE7JR7e/MaH2sZHc4u/28S/LyxkiK4 ebY4esC+YlOafC+ag5lUfkj3wGW6+py2l9dIFjCzhR4glyjKx9y4J0t8HS2c+M3vFNTK 3wckynBbkpZP1T0Ay462lqGth0eP3bv42Qr5Z0jN24MRM+IwAsiuHq2utH2yXLcRlU24 bc5w== X-Gm-Message-State: APjAAAWzDf1v4AbW8xt4VuMHrbn34AuaOHeYV7TO+Fu6Gtw8p4/ZxkPZ H7ORT4xtGoVHQ828qw5a6VSnug== 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: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@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" */ -- 2.7.4