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 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 E4F4FC433EF for ; Fri, 15 Apr 2022 03:49:48 +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:In-Reply-To:From:References:CC:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=xmEx2PETo9rGuIAbENKlCzr9Cq5D7J4X33iVGPE4/1g=; b=yWVQMQ9MOH/7Tt JjPuLOmQNWPm5zh9UVg7YWEqtUah9+Z8NBF57VqAksqyqkjBMdqPhdY8+Mz1pcixUfoSbJ9+jbReT JCCrj9As7vchbt02lzJTzC6nIHZ1hR5+h0cqoDwMJAjgPw7fLwx/BOpTaTrAZDTT8EFt+OZDmIGNt NbQUwNedzPiwD3aDs4YPLQiYdWQKe8F6npVitKgMG253rw+DlO/uzKrZ0W7KrbRRjszHMWJL7AKzW tiSLAIlxIkEsLhSiC21b3jTh/GfWRQH0/rC76gpx8gsS0YD7h/NXwA8jDZm/gBApmNouSyQUrtgcp njGb/ehZVX7DPnaDDdpg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nfCwF-008Glu-La; Fri, 15 Apr 2022 03:48:03 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nfCwC-008GlB-AW for linux-arm-kernel@lists.infradead.org; Fri, 15 Apr 2022 03:48:02 +0000 Received: from kwepemi500013.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Kfj0v07tnzgYpt; Fri, 15 Apr 2022 11:46:06 +0800 (CST) Received: from [10.67.111.192] (10.67.111.192) by kwepemi500013.china.huawei.com (7.221.188.120) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 15 Apr 2022 11:47:56 +0800 Message-ID: Date: Fri, 15 Apr 2022 11:47:56 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH bpf-next v2 0/6] bpf trampoline for arm64 Content-Language: en-US To: Hou Tao , , , , , CC: Catalin Marinas , Will Deacon , Steven Rostedt , Ingo Molnar , Daniel Borkmann , Alexei Starovoitov , Zi Shen Lim , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , "David S . Miller" , Hideaki YOSHIFUJI , David Ahern , Thomas Gleixner , Borislav Petkov , Dave Hansen , , , Shuah Khan , Mark Rutland , Ard Biesheuvel , Pasha Tatashin , Peter Collingbourne , Daniel Kiss , Sudeep Holla , Steven Price , Marc Zyngier , Mark Brown , Kumar Kartikeya Dwivedi , Delyan Kratunov References: <20220414162220.1985095-1-xukuohai@huawei.com> From: Xu Kuohai In-Reply-To: X-Originating-IP: [10.67.111.192] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemi500013.china.huawei.com (7.221.188.120) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220414_204800_762685_E0687BB4 X-CRM114-Status: GOOD ( 11.35 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 4/15/2022 10:37 AM, Hou Tao wrote: > Hi, > > On 4/15/2022 12:22 AM, Xu Kuohai wrote: >> Add bpf trampoline support for arm64. Most of the logic is the same as >> x86. >> >> Tested on qemu, result: >> #55 fentry_fexit:OK >> #56 fentry_test:OK >> #58 fexit_sleep:OK >> #59 fexit_stress:OK >> #60 fexit_test:OK >> #67 get_func_args_test:OK >> #68 get_func_ip_test:OK >> #101 modify_return:OK > bpf_struct_ops also depends on bpf trampoline, could you please also add the > test results for bpf_struct_ops related tests case ? Yes, more tests is needed. I'm curently testing with bpftrace's kfunc and bpf selftest, more testing results will be posted. >> >> v2: >> - Add Song's ACK >> - Change the multi-line comment in is_valid_bpf_tramp_flags() into net >> style (patch 3) >> - Fix a deadloop issue in ftrace selftest (patch 2) >> - Replace pt_regs->x0 with pt_regs->orig_x0 in patch 1 commit message >> - Replace "bpf trampoline" with "custom trampoline" in patch 1, as >> ftrace direct call is not only used by bpf trampoline. >> >> v1: https://lore.kernel.org/bpf/20220413054959.1053668-1-xukuohai@huawei.com/ >> >> Xu Kuohai (6): >> arm64: ftrace: Add ftrace direct call support >> ftrace: Fix deadloop caused by direct call in ftrace selftest >> bpf: Move is_valid_bpf_tramp_flags() to the public trampoline code >> bpf, arm64: Impelment bpf_arch_text_poke() for arm64 >> bpf, arm64: bpf trampoline for arm64 >> selftests/bpf: Fix trivial typo in fentry_fexit.c >> >> arch/arm64/Kconfig | 2 + >> arch/arm64/include/asm/ftrace.h | 10 + >> arch/arm64/kernel/asm-offsets.c | 1 + >> arch/arm64/kernel/entry-ftrace.S | 28 +- >> arch/arm64/net/bpf_jit.h | 14 +- >> arch/arm64/net/bpf_jit_comp.c | 390 +++++++++++++++++- >> arch/x86/net/bpf_jit_comp.c | 20 - >> include/linux/bpf.h | 5 + >> kernel/bpf/bpf_struct_ops.c | 4 +- >> kernel/bpf/trampoline.c | 35 +- >> kernel/trace/trace_selftest.c | 4 +- >> .../selftests/bpf/prog_tests/fentry_fexit.c | 4 +- >> 12 files changed, 482 insertions(+), 35 deletions(-) >> > > . _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel