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=-8.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 98203C32771 for ; Sat, 4 Jan 2020 21:00:05 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5A2FB22B48 for ; Sat, 4 Jan 2020 21:00:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="lvxZJgcA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5A2FB22B48 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 079388E000E; Sat, 4 Jan 2020 16:00:05 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 0291E8E0003; Sat, 4 Jan 2020 16:00:04 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E5AD08E000E; Sat, 4 Jan 2020 16:00:04 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0153.hostedemail.com [216.40.44.153]) by kanga.kvack.org (Postfix) with ESMTP id D41DE8E0003 for ; Sat, 4 Jan 2020 16:00:04 -0500 (EST) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with SMTP id 967714DA3 for ; Sat, 4 Jan 2020 21:00:04 +0000 (UTC) X-FDA: 76341169128.25.hate84_57f2b2ac96e0f X-HE-Tag: hate84_57f2b2ac96e0f X-Filterd-Recvd-Size: 2802 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf10.hostedemail.com (Postfix) with ESMTP for ; Sat, 4 Jan 2020 21:00:04 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (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 329E924655; Sat, 4 Jan 2020 21:00:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578171603; bh=eZhz8CsWRl+L48KqVi5sPx/LbN+mmX/hcs8cwS0TrxQ=; h=Date:From:To:Subject:From; b=lvxZJgcAsmWchbFOAMUWefqBP6jLwThLGrEt8w+2Yg97ccYFi9vlPQ2GxMG6Dl+j1 jE4sfSZghPk1q1BcJyEIVrbL2Z9xd3hjJuPGYw+OiNMbrvD+W7veXyHfxRzNgZKK4y dFv+eFKN92kBazynEFlKYOpDgR0+Vna2iKVBRQX4= Date: Sat, 04 Jan 2020 13:00:02 -0800 From: akpm@linux-foundation.org To: akpm@linux-foundation.org, allison@lohutok.net, bcain@codeaurora.org, gregkh@linuxfoundation.org, linux-mm@kvack.org, mm-commits@vger.kernel.org, ndesaulniers@google.com, rfontana@redhat.com, sidneym@quicinc.com, tglx@linutronix.de, torvalds@linux-foundation.org Subject: [patch 10/17] hexagon: work around compiler crash Message-ID: <20200104210002.sRLfEoLh6%akpm@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Nick Desaulniers Subject: hexagon: work around compiler crash Clang cannot translate the string "r30" into a valid register yet. Link: https://github.com/ClangBuiltLinux/linux/issues/755 Link: http://lkml.kernel.org/r/20191028155722.23419-1-ndesaulniers@google.com Signed-off-by: Nick Desaulniers Suggested-by: Sid Manning Reviewed-by: Brian Cain Cc: Allison Randal Cc: Greg Kroah-Hartman Cc: Richard Fontana Cc: Thomas Gleixner Signed-off-by: Andrew Morton --- arch/hexagon/kernel/stacktrace.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/arch/hexagon/kernel/stacktrace.c~hexagon-work-around-compiler-crash +++ a/arch/hexagon/kernel/stacktrace.c @@ -11,8 +11,6 @@ #include #include -register unsigned long current_frame_pointer asm("r30"); - struct stackframe { unsigned long fp; unsigned long rets; @@ -30,7 +28,7 @@ void save_stack_trace(struct stack_trace low = (unsigned long)task_stack_page(current); high = low + THREAD_SIZE; - fp = current_frame_pointer; + fp = (unsigned long)__builtin_frame_address(0); while (fp >= low && fp <= (high - sizeof(*frame))) { frame = (struct stackframe *)fp; _