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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB1A2C3A5A1 for ; Thu, 22 Aug 2019 17:46:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 879A023402 for ; Thu, 22 Aug 2019 17:46:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566495983; bh=PQdXEp1M2D7znItW2RwWXomYTTMJIELx+qPHFFaEajE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=p0vcgHD1DzXtKRzMAbt4keIS/4A111lODqWkNDQec/7Sk/oUXzgbMyWCNw1ufxl9E r82ozB/vJy17OLHxSeo5/7eqePPO6f/genmXuGsjJz3cq3eU8tWNQgRzUcr5UJUmXO R5ncF3yORNAiyf1AE5/AN3OKhY5hMfFErGBRmpl0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393089AbfHVRqW (ORCPT ); Thu, 22 Aug 2019 13:46:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:41832 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391667AbfHVRWy (ORCPT ); Thu, 22 Aug 2019 13:22:54 -0400 Received: from localhost (wsip-184-188-36-2.sd.sd.cox.net [184.188.36.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 674192341D; Thu, 22 Aug 2019 17:22:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566494574; bh=PQdXEp1M2D7znItW2RwWXomYTTMJIELx+qPHFFaEajE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CzPegdPtuvMz/mA0Pd6xxt9wxnXRKkVEBJuIINJRtd3H0P9wD5KaT+CAmwJr+UhaJ wHflGMGZWDVvpNdgJCypvGEx9Ish1mWSR++05nYVqtVZSL7jNqo6dXGUiupqtkZDsP 17IicFk0+4gSF8Yn0WDTjhGxfEhiVYiYLLpf6jNo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Will Deacon Subject: [PATCH 4.4 65/78] arm64: compat: Allow single-byte watchpoints on all addresses Date: Thu, 22 Aug 2019 10:19:09 -0700 Message-Id: <20190822171833.914669081@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190822171832.012773482@linuxfoundation.org> References: <20190822171832.012773482@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Will Deacon commit 849adec41203ac5837c40c2d7e08490ffdef3c2c upstream. Commit d968d2b801d8 ("ARM: 7497/1: hw_breakpoint: allow single-byte watchpoints on all addresses") changed the validation requirements for hardware watchpoints on arch/arm/. Update our compat layer to implement the same relaxation. Cc: Signed-off-by: Will Deacon Signed-off-by: Greg Kroah-Hartman --- arch/arm64/kernel/hw_breakpoint.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/arch/arm64/kernel/hw_breakpoint.c +++ b/arch/arm64/kernel/hw_breakpoint.c @@ -504,13 +504,14 @@ int arch_validate_hwbkpt_settings(struct /* Aligned */ break; case 1: - /* Allow single byte watchpoint. */ - if (info->ctrl.len == ARM_BREAKPOINT_LEN_1) - break; case 2: /* Allow halfword watchpoints and breakpoints. */ if (info->ctrl.len == ARM_BREAKPOINT_LEN_2) break; + case 3: + /* Allow single byte watchpoint. */ + if (info->ctrl.len == ARM_BREAKPOINT_LEN_1) + break; default: return -EINVAL; }