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=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,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 D19E1C43381 for ; Tue, 26 Mar 2019 18:07:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A53B12082F for ; Tue, 26 Mar 2019 18:07:08 +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="C8BAAlG4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732572AbfCZSHH (ORCPT ); Tue, 26 Mar 2019 14:07:07 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:35077 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731467AbfCZSGu (ORCPT ); Tue, 26 Mar 2019 14:06:50 -0400 Received: by mail-wr1-f68.google.com with SMTP id w1so15544257wrp.2 for ; Tue, 26 Mar 2019 11:06:48 -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=C8BAAlG4HEv42kHlnrcjpi2XqGSGKgawPiv1cUHm1oaeWHBrcvSDSc5QF3VEzD4iKN cP/J8O7wQ/m5tSSUxofchGX68sX+EwskQ39M++NtnCD+OKOsHCdOOZ2FRmA9FDtE4Q5O pC3Qib6NFHJ3XfANiFbHqnzsBZU7FtOc31Zp3UI9IYXy74Yic8+kUL+i/LEJtT5ssRGs YVKkGZR5KM/dEkUnMMO5qe+I/7z3gJOZsQUqpdv4fhsAdgft1tuZxPDVMVCa4upDgbzF vlP94ZNYu7JfIvc77VI8sL48ItMwwT1nXkndlA3ifyo9JgqE4aHOliCbVsciPGb5gQJB 5/rg== 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=AAFJmq30vPHE377Vn5oMTxobbHNMbC0LjBtTPLhlyuFA52m1mp0GC9tMKmDWgpKnCx skKQWjOpr6f2cZFLRKmnzvCkDXbEjr4Rdp4pvy3ASfE6i5gbZwyq8w9QQcFnDIitpkrW LMYcC2IizRA6NJS9RKGKjlify+ML7hddZ4P/r6GmWiBB8wIirV8ZmfCHOBZdS6JSb//S txcUYjrMjQ8BEbTDp7hWcGErsa5OlQ3JCbc05KHwmuC8dptTWYnYpGu0bdirqBcDBr5m h/zZorMyEAxuYMaEfh7DgMGMTpOuZhg1rf407bFJemcOH7HVU/fB2dPQiM4KfHm824iG dxdg== X-Gm-Message-State: APjAAAXuVQkbbrf0kNXXPesJdAeXN5GLv0d9Wd8UeTzDyacMqHqVxe3M fK2CYpuhzmiBrEyQGsQBr9o4Kw== X-Google-Smtp-Source: APXvYqwbtrejR3KCst2sQRjESvX6YZZCTbRkCOolq/qhQ3zuJEC1s5hVXN92fwZnDA7m3oOf0RSnEw== X-Received: by 2002:adf:f286:: with SMTP id k6mr11712543wro.137.1553623608337; Tue, 26 Mar 2019 11:06:48 -0700 (PDT) Received: from cbtest28.netronome.com ([217.38.71.146]) by smtp.gmail.com with ESMTPSA id i28sm36697534wrc.32.2019.03.26.11.06.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 26 Mar 2019 11:06:46 -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/RFC bpf-next 10/16] s390: bpf: eliminate zero extension code-gen Date: Tue, 26 Mar 2019 18:05:33 +0000 Message-Id: <1553623539-15474-11-git-send-email-jiong.wang@netronome.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1553623539-15474-1-git-send-email-jiong.wang@netronome.com> References: <1553623539-15474-1-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" */ -- 2.7.4