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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 20A39C0218A for ; Thu, 30 Jan 2025 19:03:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=AUuu4hqzH6mNtJAivC+Uo5peTqP18ai+56VAExs4m/I=; b=P9fa1W967NqeY+gRc5KNyyRSwP TqK4noxgoe+f5ftLEHa3PavW+HKMCQKGH/3qfZeSmZ1M+9V8MwgEBvN1+2sp7tcODauCd9CEtTGjx +Wjfs6uuedpwDYMBTsX+qzsbazyUTMzxYFLcuNt6aC9CSZoExRuwv7ChxicJjWbqEebV33C9IYGdg 1Uj3hvcLhKwVY4w25g9nR0NcOmKDSia4ZsVxAC6fcrQ/lRfydgKlFLNzs/LsK4jwispUYg98s8yEW Ln+KeyYCxnIgrvC8yyIxrMWMoCMrM73GwbUFmCSUZ/nDQ4WQ59OqpYsXXHEdgIIVJYz02gzLB/zYw /fts5Jxw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tdZoV-00000009SCv-2GAt; Thu, 30 Jan 2025 19:02:55 +0000 Received: from out-176.mta1.migadu.com ([95.215.58.176]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tdZnB-00000009S6n-26hC for linux-arm-kernel@lists.infradead.org; Thu, 30 Jan 2025 19:01:35 +0000 Date: Thu, 30 Jan 2025 19:01:19 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1738263686; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AUuu4hqzH6mNtJAivC+Uo5peTqP18ai+56VAExs4m/I=; b=X+8PWTUZ0aZvus/WbWXFkTk6ahWsfRC3S7ZzXvYoi/NOkDMaw8sHMi5KGpYWs82IlAjfUJ Ce2Awxbju8tTA4eGDj6ny1bxsuYi39HADtnU/dxxT6ZavAANSdXEVQMQ5Tab4ycP2z+yH6 xnP1tSOirOUv/DJLt2YotHeASptISog= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Roman Gushchin To: Song Liu Cc: Weinan Liu , Josh Poimboeuf , Steven Rostedt , Indu Bhagat , Peter Zijlstra , Mark Rutland , Will Deacon , Ian Rogers , linux-toolchains@vger.kernel.org, linux-kernel@vger.kernel.org, live-patching@vger.kernel.org, joe.lawrence@redhat.com, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 0/8] unwind, arm64: add sframe unwinder for kernel Message-ID: References: <20250127213310.2496133-1-wnliu@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250130_110133_850382_28467428 X-CRM114-Status: GOOD ( 13.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Jan 30, 2025 at 10:34:09AM -0800, Song Liu wrote: > On Thu, Jan 30, 2025 at 9:59 AM Song Liu wrote: > > > > I missed this set before sending my RFC set. If this set works well, we > > won't need the other set. I will give this one a try. > > I just realized that llvm doesn't support sframe yet. So we (Meta) still > need some sframe-less approach before llvm supports sframe. > > IIRC, Google also uses llvm to compile the kernel. Weinan, would > you mind share your thoughts on how we can adopt this before > llvm supports sframe? (compile arm64 kernel with gcc?) Hi Song, the plan is to start the work on adding sframe support to llvm in parallel to landing these changes upstream. From the initial assessment it shouldn't be too hard. Thanks