From patchwork Sun Mar 31 09:24:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13612187 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 89669CD1284 for ; Sun, 31 Mar 2024 09:23:08 +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=tidmNOroWI1CI5FNmq0/sTUt4fPxMbtfJpSepX68Z+k=; b=ySVXdWUjfZ+KN4 YvBFMk4Ui5NnkFL1CtZiEJZ9M0m9O7F3iSME1FwQbbzgne7bDjWwInRnovf4bzOXbVYZ2us6YqutG i/n/A7wra9hlgKRp6Jmpc8dMJrNmXxxuCvjxBRXE6kYqyyqx4HbRQeZoOk32nwd/kg3TImTxjXKgs bck55x3NxUnyFoZXSA8CXYSsUrU4f3x77hU08UaWe4yTg79VFhx8PRcPq4K0eIDkR0TU7ULC9pEyV hyNHXAChkoZNNx+hcWplz3nKOVVBr1MepcUi3dECRl/FAeRGq4aYcvzaGuRYt0sJkGYstIA9HKzNv QpMN/WTwn+kF9WBIlLbQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rqrP2-00000005AJT-3iyY; Sun, 31 Mar 2024 09:23:00 +0000 Received: from dggsgout12.his.huawei.com ([45.249.212.56]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rqrOw-00000005AHI-2pMp for linux-riscv@lists.infradead.org; Sun, 31 Mar 2024 09:22:58 +0000 Received: from mail.maildlp.com (unknown [172.19.163.235]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4V6pZk1QJQz4f3jXf for ; Sun, 31 Mar 2024 17:22:38 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 9366B1A0568 for ; Sun, 31 Mar 2024 17:22:44 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP4 (Coremail) with SMTP id gCh0CgCH2WtkKwlmesQWIw--.11467S2; Sun, 31 Mar 2024 17:22:44 +0800 (CST) From: Pu Lehui To: bpf@vger.kernel.org, linux-riscv@lists.infradead.org, netdev@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next 0/2] Add 12-argument support for RV64 bpf trampoline Date: Sun, 31 Mar 2024 09:24:03 +0000 Message-Id: <20240331092405.822571-1-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-CM-TRANSID: gCh0CgCH2WtkKwlmesQWIw--.11467S2 X-Coremail-Antispam: 1UD129KBjvdXoW7Jw1UWFy5Zw13CF4fJFy3XFb_yoWkuFcEkF 4rJFyfJ3yDJFWFqa4jkr15ZrZ0grWSqry2kr1DWrZ293s8Wr9FyrsY9r9rt34rXrW3WFnx XFykXFyIyw1agjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbxxFF20E14v26ryj6rWUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUGVWUXwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628v n2kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F4 0E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_GFv_Wryl IxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxV AFwI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6Fyj6rWUJwCI42IY6I8E87Iv67AKxVWU JVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfUF0 eHDUUUU X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240331_022254_933303_2BDA4F6E X-CRM114-Status: UNSURE ( 5.42 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org This patch adds 12 function arguments support for riscv64 bpf trampoline. The current bpf trampoline supports <= sizeof(u64) bytes scalar arguments [0] and <= 16 bytes struct arguments [1]. Therefore, we focus on the situation where scalars are at most XLEN bits and aggregates whose total size does not exceed 2×XLEN bits in the riscv calling convention [2]. Link: https://elixir.bootlin.com/linux/v6.8/source/kernel/bpf/btf.c#L6184 [0] Link: https://elixir.bootlin.com/linux/v6.8/source/kernel/bpf/btf.c#L6769 [1] Link: https://github.com/riscv-non-isa/riscv-elf-psabi-doc/releases/download/draft-20230929-e5c800e661a53efe3c2678d71a306323b60eb13b/riscv-abi.pdf [2] Pu Lehui (2): riscv, bpf: Add 12-argument support for RV64 bpf trampoline selftests/bpf: Add testcase where 7th argment is struct arch/riscv/net/bpf_jit_comp64.c | 63 +++++++++++++------ .../selftests/bpf/bpf_testmod/bpf_testmod.c | 19 ++++++ .../selftests/bpf/prog_tests/tracing_struct.c | 13 ++++ .../selftests/bpf/progs/tracing_struct.c | 35 +++++++++++ 4 files changed, 111 insertions(+), 19 deletions(-) Acked-by: Björn Töpel Reviewed-by: Björn Töpel