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=-12.3 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, UNWANTED_LANGUAGE_BODY,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 C5161C282DD for ; Fri, 10 Jan 2020 22:06:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 983A020721 for ; Fri, 10 Jan 2020 22:06:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578694007; bh=2+xHZKLnRdyQ7b/LhL/vxI6E5dI58k/5zYjcwRCq0xA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=LViMLQOs4cSRDqGxyX9TfI8yPr2wWOeHuKH1RN2DdXUhbn5qG++BCQD4QV7qLXL5Q rXqL4EETcuTwOrPdH8ReFdaSd7Hc4z0nshS8+pJzHE1Jg3oky9UWP+F9uQS5NPFYs7 jbURPteXNonrNxa+rmq18HKg414cyL+0uDR5NSKw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728328AbgAJWGq (ORCPT ); Fri, 10 Jan 2020 17:06:46 -0500 Received: from mail.kernel.org ([198.145.29.99]:53516 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728300AbgAJWGc (ORCPT ); Fri, 10 Jan 2020 17:06:32 -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 D471A20880; Fri, 10 Jan 2020 22:06:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578693992; bh=2+xHZKLnRdyQ7b/LhL/vxI6E5dI58k/5zYjcwRCq0xA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LYUHHlR/S7vZB/rMUyddbL9imaVWqlIEaqFyKhqNFoxfAaCDgygHeBzE1VThqTIw2 4lXMUM+dDeUJ4Kv/VYtpSR0sh1R7w7qmOvTxE6+UCqIJgASG4TrPvHlNSNE1tZUiGt UdCivBN/acxmzhFs0EGF4o8p8Sr83bytZSF4n4Ww= 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 4.14 7/8] hexagon: work around compiler crash Date: Fri, 10 Jan 2020 17:06:20 -0500 Message-Id: <20200110220621.28651-7-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200110220621.28651-1-sashal@kernel.org> References: <20200110220621.28651-1-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 41866a06adf7..ec4ef682923d 100644 --- a/arch/hexagon/kernel/stacktrace.c +++ b/arch/hexagon/kernel/stacktrace.c @@ -24,8 +24,6 @@ #include #include -register unsigned long current_frame_pointer asm("r30"); - struct stackframe { unsigned long fp; unsigned long rets; @@ -43,7 +41,7 @@ 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