From patchwork Thu Jan 27 07:15:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hou Tao X-Patchwork-Id: 12728134 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9BFC1C433F5 for ; Fri, 28 Jan 2022 08:43:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=mXsQ5x7O1vISyHYcdoCQM//M4EulK3ppVlsGvwlhpSk=; b=KxTXS9KDNZUpXE 6BTLLnaaOZlvprou4vvJBo2tWCbtIlgsP+z++huHUtupE/Morz4sUQzIhuJJAWJ53Y/E/7y1j9kjD l+N0RB9LESJTtHFdFOaL715eSD4dRghvGP/0AOk1IRKyr/KdWFQmUnZCGVShjmsqcr++MrugsCtBk jtuSFiHyWUeEekG6gWNzc3japiOZzxEPI9RMPf8JBLJgBNw5n37vhGWvtBGetp+Na5ufPtnoBV8Dn /rtscJ6uXWdOpkvoxdjTFlTCsQyFnuUhlm7aRaklQmQAn33q5sglCQwWsgi9sBtvieEiXB4ZgN9g8 IeD1zRfFJne7bkyfyrxw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDMpi-0012Xj-J7; Fri, 28 Jan 2022 08:42:14 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDMpU-0012UK-MJ for linux-arm-kernel@lists.infradead.org; Fri, 28 Jan 2022 08:42:02 +0000 Received: from dggpeml500025.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4JlWB81Ww1z9sbd; Fri, 28 Jan 2022 16:40:32 +0800 (CST) Received: from huawei.com (10.175.124.27) by dggpeml500025.china.huawei.com (7.185.36.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Fri, 28 Jan 2022 16:41:48 +0800 From: Hou Tao To: Daniel Borkmann CC: Alexei Starovoitov , Martin KaFai Lau , Yonghong Song , Andrii Nakryiko , "David S . Miller" , Jakub Kicinski , John Fastabend , , , , Zi Shen Lim , Catalin Marinas , Will Deacon , Ard Biesheuvel , Subject: [PATCH bpf-next v2 0/2] bpf, arm64: enable kfunc call Date: Thu, 27 Jan 2022 15:15:30 +0800 Message-ID: <20220127071532.384888-1-houtao1@huawei.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpeml500025.china.huawei.com (7.185.36.35) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220128_004200_921936_DBDB5968 X-CRM114-Status: UNSURE ( 4.60 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, The simple patchset tries to enable kfunc call for arm64. Patch #1 just overrides bpf_jit_supports_kfunc_call() to enable kfunc call and patch #2 add a test to ensure s32 is sufficient for kfunc offset. Change Log: v2: * add a test to check whether imm will be overflowed for kfunc call v1: https://lore.kernel.org/bpf/20220119144942.305568-1-houtao1@huawei.com Hou Tao (2): bpf, arm64: enable kfunc call selftests/bpf: check whether s32 is sufficient for kfunc offset arch/arm64/net/bpf_jit_comp.c | 5 ++ .../selftests/bpf/prog_tests/ksyms_module.c | 72 +++++++++++++++++++ 2 files changed, 77 insertions(+)