From patchwork Mon Jan 15 12:54:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13519587 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C1868168B7; Mon, 15 Jan 2024 13:09:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.48]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4TDBrS6l0YzWmc4; Mon, 15 Jan 2024 20:52:56 +0800 (CST) Received: from kwepemd100009.china.huawei.com (unknown [7.221.188.135]) by mail.maildlp.com (Postfix) with ESMTPS id CF9FB180017; Mon, 15 Jan 2024 20:53:55 +0800 (CST) Received: from ultra.huawei.com (10.90.53.71) by kwepemd100009.china.huawei.com (7.221.188.135) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1258.28; Mon, 15 Jan 2024 20:53:54 +0800 From: Pu Lehui To: , , CC: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Conor Dooley , Luke Nelson , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next v3 0/6] Zbb support and code simplification for RV64 JIT Date: Mon, 15 Jan 2024 12:54:21 +0000 Message-ID: <20240115125427.2914015-1-pulehui@huawei.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemd100009.china.huawei.com (7.221.188.135) X-Patchwork-Delegate: bpf@iogearbox.net Add Zbb support [0] to optimize code size and performance of RV64 JIT. Meanwhile, adjust the code for unification and simplification. Tests test_bpf.ko and test_verifier have passed, as well as the relative testcases of test_progs*. Link: https://github.com/riscv/riscv-bitmanip/releases/download/1.0.0/bitmanip-1.0.0-38-g865e7a7.pdf [0] v3: - Change to early-exit code style and make code more explicit. v2: https://lore.kernel.org/bpf/20230919035839.3297328-1-pulehui@huaweicloud.com - Add runtime detection for Zbb instructions. - Correct formatting issues detected by checkpatch. v1: https://lore.kernel.org/bpf/20230913153413.1446068-1-pulehui@huaweicloud.com Pu Lehui (6): riscv, bpf: Unify 32-bit sign-extension to emit_sextw riscv, bpf: Unify 32-bit zero-extension to emit_zextw riscv, bpf: Simplify sext and zext logics in branch instructions riscv, bpf: Add necessary Zbb instructions riscv, bpf: Optimize sign-extention mov insns with Zbb support riscv, bpf: Optimize bswap insns with Zbb support arch/riscv/net/bpf_jit.h | 134 ++++++++++++++++++++ arch/riscv/net/bpf_jit_comp64.c | 210 +++++++++++--------------------- 2 files changed, 205 insertions(+), 139 deletions(-)