Received: by 2002:ac0:a582:0:0:0:0:0 with SMTP id m2-v6csp3864470imm; Mon, 8 Oct 2018 10:45:18 -0700 (PDT) X-Google-Smtp-Source: ACcGV60K8vWlDYdj6j+ukLNWiTYmjOWNQijCvnm5njKwhiyigYTBJMN6wadn/SCvUy7VIPl5CjiR X-Received: by 2002:a17:902:2e:: with SMTP id 43-v6mr24870548pla.290.1539020718703; Mon, 08 Oct 2018 10:45:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1539020718; cv=none; d=google.com; s=arc-20160816; b=CU4EGEqocRVsq6FWe4VVusSC+bm+bMTKZQoODNhg7JSjnFL+3KBrzOrQ82glWN/ni5 DBRF5swHS9QSoDPcCxBKdZQk9O5at617QXddk3u35ThrcgXn5QiGeJSEycfghZyDRd4W cyoh9IphjoqDEVKX9JB4zp4B+tD25d6WP7RlzVHc/m6IhT2phcflQHEP46l2/7EHLheY 26pS/CwN58KGfWZpwijQP3aEwn8v4Bp5jROmdkiq41p/rTgLPNHzookLr8BNVR1nQBtp twUc9ZSdf1UU9FYKqPa+qUEWAk2A3z+RzaDkz3xlRJdgfZD59MSpru/ehEFfLY6IqqRs cEdA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date; bh=PLPfhlS/u+YrlG0B1XbSXv3+zm1tPefGN6WlnrfPHB8=; b=lrprFTFa5624fgHeK92KaUInPze9O4oPovfvhcyfjcVdm22GGlFeIKjP6CIbfzoMLu xcuunt5sd5MSH9KBr7erIc865cLJJQBR1rmMIxFhbjVk3GiVnnBQOoO6oLpElfq1XrHZ EhirYWwZCSzj/MKtXYJGfDkLF+pMoLA0qPJyT9EAz1TIkcPSJz2KWZ2PGSGkJg6GC623 mptD/Zn2C6Avz2sYPWI2ltXbUam3BnXT35ShgX2QeaQwP6grhTmGuU3rYM1cWmz+HIED BGNAyKPzNk18B1Vfy5BG95KwnalttzrjrC9wGNwqi8fRDIb20y52bXxecyrxqE/MJchJ B1gQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id bb6-v6si17859244plb.359.2018.10.08.10.45.03; Mon, 08 Oct 2018 10:45:18 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726476AbeJIA5o (ORCPT + 99 others); Mon, 8 Oct 2018 20:57:44 -0400 Received: from mx2.suse.de ([195.135.220.15]:37626 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726291AbeJIA5o (ORCPT ); Mon, 8 Oct 2018 20:57:44 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 50A20AD75; Mon, 8 Oct 2018 17:44:53 +0000 (UTC) Date: Mon, 8 Oct 2018 19:44:51 +0200 (CEST) From: Jiri Kosina To: Ard Biesheuvel cc: Andy Lutomirski , Peter Zijlstra , Steven Rostedt , LKML , Linus Torvalds , Ingo Molnar , Andrew Morton , Thomas Gleixner , Masami Hiramatsu , Mathieu Desnoyers , Matthew Helsley , "Rafael J. Wysocki" , David Woodhouse , Paolo Bonzini , Josh Poimboeuf , Jason Baron , Andrew Lutomirski Subject: Re: [POC][RFC][PATCH 1/2] jump_function: Addition of new feature "jump_function" In-Reply-To: Message-ID: References: <20181006015110.653946300@goodmis.org> <20181006015720.634688468@goodmis.org> <20181006121211.GA5663@hirez.programming.kicks-ass.net> <20181006093905.46276505@vmware.local.home> <20181008072134.GB5663@hirez.programming.kicks-ass.net> <20181008155757.GC5663@hirez.programming.kicks-ass.net> <20181008163953.GD5663@hirez.programming.kicks-ass.net> User-Agent: Alpine 2.21 (LSU 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 8 Oct 2018, Ard Biesheuvel wrote: > Does that mean that architectures could opt out of doing the whole > objtool + relocation processing thing, and instead take the hit of > going through the trampoline for all calls? There are architectures that aren't [currently] supported by objtool at all anyway. -- Jiri Kosina SUSE Labs