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 8C32CC3A5A1 for ; Thu, 22 Aug 2019 17:39:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 541F720856 for ; Thu, 22 Aug 2019 17:39:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566495590; bh=vAxN4LcP1t22yKu+PwrsNMiJe85M6FUxg3JUwmu9NT0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=pWyFvnSdHRq3Rev+LgPp+H0uoIgCTLreOa+r+sTSv8p2yQjmbrH1DFCn4QV3hCK7M rOPDt1cfTR9HvI6pF8uZfvWXr08X4nGOdUThMHOiOGmQh3Vkvr6WCMw4HFRykuaIML cHLzmDrkkxdmJr54UicwnvBVQ0MbwM75/Dke3Z+I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392736AbfHVRjt (ORCPT ); Thu, 22 Aug 2019 13:39:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:45394 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404117AbfHVRYM (ORCPT ); Thu, 22 Aug 2019 13:24:12 -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 E665921743; Thu, 22 Aug 2019 17:24:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566494652; bh=vAxN4LcP1t22yKu+PwrsNMiJe85M6FUxg3JUwmu9NT0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=R+Auk55KP2lO0MdnvX21tPcxpJtfNol7oqSe2R90F5HnK7DCSkeMliMl8TbDJzpw2 WF69UC5zHsPBw4yvOf1tjSB2P4paY65SFATgTrgU30zyZi0CBHy8QalcX901xuv2Dp uYpI/RGBG5LiA4Quq2ds0EhquNDr2za9u5BNOhSI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Will Deacon Subject: [PATCH 4.9 092/103] arm64: compat: Allow single-byte watchpoints on all addresses Date: Thu, 22 Aug 2019 10:19:20 -0700 Message-Id: <20190822171732.894197823@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190822171728.445189830@linuxfoundation.org> References: <20190822171728.445189830@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 @@ -508,13 +508,14 @@ 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; }