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[2620:137:e000::1:20]) by mx.google.com with ESMTP id st11-20020a170907c08b00b0078e1d20b9dcsi10430014ejc.916.2022.10.19.00.40.29; Wed, 19 Oct 2022 00:40:55 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=desiato.20200630 header.b=LLqccD4l; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229879AbiJSHaV (ORCPT + 99 others); Wed, 19 Oct 2022 03:30:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39852 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229554AbiJSHaS (ORCPT ); Wed, 19 Oct 2022 03:30:18 -0400 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 68C805F204 for ; Wed, 19 Oct 2022 00:30:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=21/ckJWCOxn0XfQspA5XjzoM+FA0LGSZXaDWxW/e6gM=; b=LLqccD4lEA9JYP1m9eRP7lH2vN td4WwVpAXSKBq2fK28Ns9M1/xqupZYqgTcOr39szzoX67P/A7Y30hNt9KAK3GTLit3RNuKbLi4kfl lW9+OtD9jDoKglvnE6hX6dupUZjkFlSNavMmwR0VswFLnRbIisyyvdzC619ApW4pwfPpzCU2EGm7V lYXet24L/NwbWtaVALVk1vOou3/aGqZy26zG8IiNT4MPzQEQQf8CB1fYCIOpXiJAIbaZWgtrRsLKp iylJLT6k5W9YCq00mC5/T27UvWJ38nzrs9w9zQwviTrA2uSemJZN7JagdSUuH2VCC2Et8o+TY9tOX LEwydVtQ==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1ol3WZ-004hQA-Qh; Wed, 19 Oct 2022 07:30:00 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 9BF40300431; Wed, 19 Oct 2022 09:29:58 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 5ADCB2B124979; Wed, 19 Oct 2022 09:29:58 +0200 (CEST) Date: Wed, 19 Oct 2022 09:29:58 +0200 From: Peter Zijlstra To: Josh Poimboeuf Cc: x86@kernel.org, Kees Cook , Sami Tolvanen , Joao Moreira , linux-kernel@vger.kernel.org, Mark Rutland , Josh Poimboeuf Subject: Re: [PATCH] x86/ibt: Implement FineIBT Message-ID: References: <20221018233854.qj3vrdxsnc6ds7qs@treble> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221018233854.qj3vrdxsnc6ds7qs@treble> X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 18, 2022 at 04:38:54PM -0700, Josh Poimboeuf wrote: > Can the objtool changes be moved to a separate patch? Yep, will do. > The RFC was 11 patches, is it now much smaller because of the new > dependencies? The RFC had some eBPF changes and a test module, are > those no longer needed? Yeah; it's all become much simpler with the infrastructure we get from the call-depth-tracking nonsense.