From patchwork Mon Aug 9 09:18:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Almbladh X-Patchwork-Id: 494269 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, 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 73BDAC4338F for ; Mon, 9 Aug 2021 09:19:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F4A26056C for ; Mon, 9 Aug 2021 09:19:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234437AbhHIJTs (ORCPT ); Mon, 9 Aug 2021 05:19:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234377AbhHIJTO (ORCPT ); Mon, 9 Aug 2021 05:19:14 -0400 Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63FF6C0613D3 for ; Mon, 9 Aug 2021 02:18:54 -0700 (PDT) Received: by mail-ed1-x533.google.com with SMTP id g21so23561955edb.4 for ; Mon, 09 Aug 2021 02:18:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=anyfinetworks-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=O0HvqzfnPGjGFI0y3WK6yitDk3oSPXbq2+fXq7sm5WU=; b=wzWBYTq9ogFGJwiRJjc+9dBW4fnNJmcwkYrE9Wt4LKeN18thU1f7GdoKaptkundpB/ bjgDndcY354evG6X2VLgaqaQmx6ERlujI2T2+KFsrLh+x9s+c/uBgcA4EQUF9tplQzG0 sl/IjV58Ok8fY2RiECVz7NafD+pzWL6G+vtJBo3zDq/KrH0ynUbmYXReL35otgjYvJnr ig0mftpd0Cq3jgyMlqaOaPRVM81hquve/jRtDwVHgGjOI1mMmR8ZE14ErkM4Tqo7XmuI UtHjlC7egWFun2AdnoZ+7t0KjmgUNmC5mGtXWeJraXx/wt2Pvk+imQAjKdapf2mvC2HH A4Sg== 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:mime-version:content-transfer-encoding; bh=O0HvqzfnPGjGFI0y3WK6yitDk3oSPXbq2+fXq7sm5WU=; b=hoNnkADDO7ur9qhnp0FzbICQbywGixc6UhZHXJ+t0QFZvTM37A4hfwrI2rnvP3Cizr kvsObopZMQdlu5dUpkA039KIchoLNJdBwA3Wbvfk567EibSFx0dfRM9Ew57c7fx2RbDY aI0MH05gyTyOwS8rwPyF0GwBPB10RbIBFqRd1Rwj2s8vDXQSSG8bKJ/RWmqlZl/KjxS6 +CydBYY4PT4KEVPlWbxxkZTftKiHd4iMORpiNPOt4Jm+Lt/7/fVVzFUJfF3o/Epti6F8 Hc6myuzYeT/+wz7jVCl0VezJwGn9evnnVCgDWCaxtEtNujr1okowXlI5AUQxIi4lIcN4 Y+zw== X-Gm-Message-State: AOAM532YhT1k2Up5HTAib53zoMFT4VBUSXJeq/bWEVUnr1afxadr8onr LwNO4RBRayyrd7hzOTI0ct+Nzg== X-Google-Smtp-Source: ABdhPJxyABk3rwmkLsnMrDLpX4dJXRE2SrDrGNcYhZQX0AlxZbBzm1wgE2jF4YigENWKO4hyv24PPg== X-Received: by 2002:a05:6402:386:: with SMTP id o6mr28679324edv.294.1628500733070; Mon, 09 Aug 2021 02:18:53 -0700 (PDT) Received: from anpc2.lan (static-213-115-136-2.sme.telenor.se. [213.115.136.2]) by smtp.gmail.com with ESMTPSA id dg24sm1234250edb.6.2021.08.09.02.18.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Aug 2021 02:18:52 -0700 (PDT) From: Johan Almbladh To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org Cc: kafai@fb.com, songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, Tony.Ambardar@gmail.com, netdev@vger.kernel.org, bpf@vger.kernel.org, Johan Almbladh Subject: [PATCH bpf-next v2 11/14] bpf/tests: Add test for 32-bit context pointer argument passing Date: Mon, 9 Aug 2021 11:18:26 +0200 Message-Id: <20210809091829.810076-12-johan.almbladh@anyfinetworks.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210809091829.810076-1-johan.almbladh@anyfinetworks.com> References: <20210809091829.810076-1-johan.almbladh@anyfinetworks.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On a 32-bit architecture, the context pointer will occupy the low half of R1, and the other half will be zero. Signed-off-by: Johan Almbladh --- lib/test_bpf.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/lib/test_bpf.c b/lib/test_bpf.c index 896d37f4f4b3..fcfaf45ae58a 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -2092,6 +2092,22 @@ static struct bpf_test tests[] = { #undef NUMER #undef DENOM }, +#ifdef CONFIG_32BIT + { + "INT: 32-bit context pointer word order and zero-extension", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_JMP32_IMM(BPF_JEQ, R1, 0, 3), + BPF_ALU64_IMM(BPF_RSH, R1, 32), + BPF_JMP32_IMM(BPF_JNE, R1, 0, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, +#endif { "check: missing ret", .u.insns = {