From patchwork Sat Jan 4 21:00:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11317933 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8BACC138D for ; Sat, 4 Jan 2020 21:00:06 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5994D2465D for ; Sat, 4 Jan 2020 21:00:06 +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 5994D2465D 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) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 0291E8E0003; Sat, 4 Jan 2020 16:00:04 -0500 (EST) X-Original-To: int-list-linux-mm@kvack.org 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-Original-To: linux-mm@kvack.org 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-Spam-Summary: 2,0,0,0c943da397629cf0,d41d8cd98f00b204,akpm@linux-foundation.org,:akpm@linux-foundation.org:allison@lohutok.net:bcain@codeaurora.org:gregkh@linuxfoundation.org::mm-commits@vger.kernel.org:ndesaulniers@google.com:rfontana@redhat.com:sidneym@quicinc.com:tglx@linutronix.de:torvalds@linux-foundation.org,RULES_HIT:41:355:379:800:960:967:973:988:989:1260:1263:1345:1381:1431:1437:1534:1541:1711:1730:1747:1777:1792:2393:2525:2559:2564:2682:2685:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3352:3865:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:5007:6261:6653:6737:7576:7875:7903:8599:8957:9025:9545:9592:9707:10004:10913:11026:11658:11914:12043:12048:12296:12297:12438:12517:12519:12555:12679:12783:12986:13069:13311:13357:13846:13972:14181:14384:14721:14849:14877:21080:21451:21627:21740:21939:30054,0,RBL:error,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0: 0:0,LFti 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;