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=-15.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 42317C282DD for ; Fri, 10 Jan 2020 22:07:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 13DD6206ED for ; Fri, 10 Jan 2020 22:07:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578694054; bh=sj6N5pE2/82h7vfPvxKma1ckeCsu0WweTBH31NIC6AI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=1GD0QV27Wu7bSZG8yuu2Fax/9q6FzwfRbKFNJ/NlgE1Ze7l0H3R6vop97z82hIpZT EmDjRSCUh0eQIc3gcSUi/acSkxMTatinlL1tT+sxg9exsmWY+X/GW8qk6OHpxTvN6h rtg/2LOtfGHM+ENci1cQVTHuMnmcAnwN5y7so/Ss= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728399AbgAJWHd (ORCPT ); Fri, 10 Jan 2020 17:07:33 -0500 Received: from mail.kernel.org ([198.145.29.99]:55350 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728063AbgAJWHa (ORCPT ); Fri, 10 Jan 2020 17:07:30 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BC20A2087F; Fri, 10 Jan 2020 22:07:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578694050; bh=sj6N5pE2/82h7vfPvxKma1ckeCsu0WweTBH31NIC6AI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=d91tNQdvtgdp06kiiO2L2636+5IhY9KBXSHFABtuLRVIe0P4OXhvGZMX9jHGY6XZ0 SyW7glOetEFUGcwI9HuUieMhrzjLWWsQsz+PGqdGIEZ/Wd25cmxNM55ylxjXxfrN2w MaYq/ArYVOGR0otq+8+dE1lnx9gRVlbBgyIITFZY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Nick Desaulniers , Sid Manning , Brian Cain , Allison Randal , Greg Kroah-Hartman , Richard Fontana , Thomas Gleixner , Andrew Morton , Linus Torvalds , Sasha Levin , linux-hexagon@vger.kernel.org, clang-built-linux@googlegroups.com Subject: [PATCH AUTOSEL 4.9 5/6] hexagon: work around compiler crash Date: Fri, 10 Jan 2020 17:07:20 -0500 Message-Id: <20200110220721.28780-5-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200110220721.28780-1-sashal@kernel.org> References: <20200110220721.28780-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nick Desaulniers [ Upstream commit 63e80314ab7cf4783526d2e44ee57a90514911c9 ] 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 Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- arch/hexagon/kernel/stacktrace.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/hexagon/kernel/stacktrace.c b/arch/hexagon/kernel/stacktrace.c index f94918b449a8..03a0e10ecdcc 100644 --- a/arch/hexagon/kernel/stacktrace.c +++ b/arch/hexagon/kernel/stacktrace.c @@ -23,8 +23,6 @@ #include #include -register unsigned long current_frame_pointer asm("r30"); - struct stackframe { unsigned long fp; unsigned long rets; @@ -42,7 +40,7 @@ void save_stack_trace(struct stack_trace *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; -- 2.20.1