From patchwork Wed Aug 1 16:46:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 10552715 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A206313BB for ; Wed, 1 Aug 2018 16:57:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 84EAF2B99F for ; Wed, 1 Aug 2018 16:57:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 786C72B9AC; Wed, 1 Aug 2018 16:57:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E1E5D2B99F for ; Wed, 1 Aug 2018 16:57:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=i4EP5kZ1VhPmRwGI4Ozdf43bFb8wYOsbN/M2zh3Xvtw=; b=C+eawww6pnAMH9 P5c4Pd61EXyrUIolN0YIiZcsebMNXG1i174j7tSb8zEUwyoX/aOqop1ml1z1LXbWS6oQkUw+L2w7m 63LdTwIvH7LJ/LH71nIM/Ru7K/v/Iak9HHeMyElbmcZYObnf8JkodE6OuH/BXpOYw34wtAEOjAf4n wCiv2WKJLm6Wyj8590sEskx84mD8L/mdG1UJvgLuwuaVWYMmTX9ISPbPx9V8E1HTrjBI+Y4XISkn3 HJ3crnBwUEhKEWMzOphmBdn/WobG19taiBfgf5UJDDeY3COxNGmG6oMULN2AFqo7WkwXjh7N5J0cf z5INaRWhS/6NE08Gd7dw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fkuRF-0001oi-4m; Wed, 01 Aug 2018 16:57:29 +0000 Received: from mail.linuxfoundation.org ([140.211.169.12]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fkuRB-0001mx-KH for linux-arm-kernel@lists.infradead.org; Wed, 01 Aug 2018 16:57:27 +0000 Received: from localhost (D57E6652.static.ziggozakelijk.nl [213.126.102.82]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 4DE5DEE2; Wed, 1 Aug 2018 16:57:13 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Subject: [PATCH 4.17 046/336] bpf, arm32: fix inconsistent naming about emit_a32_lsr_{r64, i64} Date: Wed, 1 Aug 2018 18:46:21 +0200 Message-Id: <20180801165030.839357457@linuxfoundation.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180801165028.930831994@linuxfoundation.org> References: <20180801165028.930831994@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180801_095725_684766_AF6010B7 X-CRM114-Status: GOOD ( 10.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Borkmann , Greg Kroah-Hartman , linux@armlinux.org.uk, stable@vger.kernel.org, Wang YanQing , Sasha Levin , Shubham Bansal , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 4.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wang YanQing [ Upstream commit 68565a1af9f7012e6f2fe2bdd612f67d2d830c28 ] The names for BPF_ALU64 | BPF_ARSH are emit_a32_arsh_*, the names for BPF_ALU64 | BPF_LSH are emit_a32_lsh_*, but the names for BPF_ALU64 | BPF_RSH are emit_a32_lsr_*. For consistence reason, let's rename emit_a32_lsr_* to emit_a32_rsh_*. This patch also corrects a wrong comment. Fixes: 39c13c204bb1 ("arm: eBPF JIT compiler") Signed-off-by: Wang YanQing Cc: Shubham Bansal Cc: linux-arm-kernel@lists.infradead.org Cc: linux@armlinux.org.uk Signed-off-by: Daniel Borkmann Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- arch/arm/net/bpf_jit_32.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -708,7 +708,7 @@ static inline void emit_a32_arsh_r64(con } /* dst = dst >> src */ -static inline void emit_a32_lsr_r64(const u8 dst[], const u8 src[], bool dstk, +static inline void emit_a32_rsh_r64(const u8 dst[], const u8 src[], bool dstk, bool sstk, struct jit_ctx *ctx) { const u8 *tmp = bpf2a32[TMP_REG_1]; const u8 *tmp2 = bpf2a32[TMP_REG_2]; @@ -724,7 +724,7 @@ static inline void emit_a32_lsr_r64(cons emit(ARM_LDR_I(rm, ARM_SP, STACK_VAR(dst_hi)), ctx); } - /* Do LSH operation */ + /* Do RSH operation */ emit(ARM_RSB_I(ARM_IP, rt, 32), ctx); emit(ARM_SUBS_I(tmp2[0], rt, 32), ctx); emit(ARM_MOV_SR(ARM_LR, rd, SRTYPE_LSR, rt), ctx); @@ -774,7 +774,7 @@ static inline void emit_a32_lsh_i64(cons } /* dst = dst >> val */ -static inline void emit_a32_lsr_i64(const u8 dst[], bool dstk, +static inline void emit_a32_rsh_i64(const u8 dst[], bool dstk, const u32 val, struct jit_ctx *ctx) { const u8 *tmp = bpf2a32[TMP_REG_1]; const u8 *tmp2 = bpf2a32[TMP_REG_2]; @@ -1330,7 +1330,7 @@ static int build_insn(const struct bpf_i case BPF_ALU64 | BPF_RSH | BPF_K: if (unlikely(imm > 63)) return -EINVAL; - emit_a32_lsr_i64(dst, dstk, imm, ctx); + emit_a32_rsh_i64(dst, dstk, imm, ctx); break; /* dst = dst << src */ case BPF_ALU64 | BPF_LSH | BPF_X: @@ -1338,7 +1338,7 @@ static int build_insn(const struct bpf_i break; /* dst = dst >> src */ case BPF_ALU64 | BPF_RSH | BPF_X: - emit_a32_lsr_r64(dst, src, dstk, sstk, ctx); + emit_a32_rsh_r64(dst, src, dstk, sstk, ctx); break; /* dst = dst >> src (signed) */ case BPF_ALU64 | BPF_ARSH | BPF_X: