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=-11.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=no 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 C0955C433E0 for ; Mon, 18 May 2020 15:56:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 81D0C207E8 for ; Mon, 18 May 2020 15:56:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="jUCcan+N" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728368AbgERP4A (ORCPT ); Mon, 18 May 2020 11:56:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727040AbgERP4A (ORCPT ); Mon, 18 May 2020 11:56:00 -0400 Received: from mail-wr1-x443.google.com (mail-wr1-x443.google.com [IPv6:2a00:1450:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1AB3EC061A0C for ; Mon, 18 May 2020 08:56:00 -0700 (PDT) Received: by mail-wr1-x443.google.com with SMTP id i15so12436431wrx.10 for ; Mon, 18 May 2020 08:56:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=PtEh/eqO/jcM1mnHH6fVjI/HimaXnKzbvkPLBE0BPVI=; b=jUCcan+Nms1s70qgGIq39zMEO6T5qEC+yiZdoFL9PBCRCkQs5AUHTbRiAcAhI0lZ5y 2+Xqnr+pY68Sd5tq2onYhMA4ykp8LFiKYIRuP62Tjcyht8aAEHNMnfZpwNkyY8DQ/ZaM 8E2Tp0Xk9TIV1TBt455W9oAIvkpV7TtDj0yaluNRAygGidNh5suWfslpRiEe2ie6rdqw pPWH5//rz9ABUSurZU0iRUWSSwBn6VuDmMOOLPgzRndHHNsX1Ea7lwYtnxR3ZDqKdEBc PRz+Yvvizttbarx8SUIfvLvxYIyB29jqXPparoMQreul88KBAGoPE/XtONTIkm0DNYj0 lFtw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=PtEh/eqO/jcM1mnHH6fVjI/HimaXnKzbvkPLBE0BPVI=; b=MUU5EPE7yLiS4MqBNYFx//s+yoxruVSe2pUjIttvfK+IrrM6vrQugoMEQvFf0ZQlyC KHSOSMbGHTYUQ2MX63Q2bpHpIeuum+x2KCGQEOnwVqCLIeewNEmXMHXGP5mQ0k7k33XC 1sID5NpuqWtO46p8MkRzeyIGAuz/coyCmft12RfSqWZlRqtAJfh6sRW3vD+3WgwdWzIG Tk/BMZYMVqgQQ1bVgCEj+YFNHS5xtHAagQAekABc3zbyPVnDy63oSQAVqTHjjBVeHWt9 90GVy4xzMlpA3zoZUdL31v+nnG9zrUA8uMXlUdLiJs5oFM5At/SI1wWYfk31r3P0i3l+ 1Xkw== X-Gm-Message-State: AOAM5300YF9/F8KHsvnI/9OnqvCPNCl0RZDOOXUK4JFXeBsFf9I2/S5d yTAB0mjB1hPe3WmOQjI+6V4GYA== X-Google-Smtp-Source: ABdhPJxt1Zaz2JVaB0TU+GicXYJwo+95dXbld8dQov8mZpcW9twBDQrd3PgWr5SfeOkk5/wD0DEL0A== X-Received: by 2002:adf:cd88:: with SMTP id q8mr20999524wrj.67.1589817358531; Mon, 18 May 2020 08:55:58 -0700 (PDT) Received: from google.com ([2a00:79e0:d:109:355c:447d:ad3d:ac5c]) by smtp.gmail.com with ESMTPSA id v126sm13452wmb.4.2020.05.18.08.55.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 May 2020 08:55:57 -0700 (PDT) Date: Mon, 18 May 2020 16:55:53 +0100 From: Andrew Scull To: David Brazdil Cc: Catalin Marinas , James Morse , Julien Thierry , Marc Zyngier , Suzuki K Poulose , Will Deacon , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 04/14] arm64: kvm: Add build rules for separate nVHE object files Message-ID: <20200518155553.GB147668@google.com> References: <20200515105841.73532-1-dbrazdil@google.com> <20200515105841.73532-5-dbrazdil@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200515105841.73532-5-dbrazdil@google.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 15, 2020 at 11:58:31AM +0100, David Brazdil wrote: > diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h > index 7f06ad93fc95..13850134fc28 100644 > --- a/arch/arm64/kernel/image-vars.h > +++ b/arch/arm64/kernel/image-vars.h > @@ -51,4 +51,16 @@ __efistub__ctype = _ctype; > > #endif > > +#ifdef CONFIG_KVM > + > +/* > + * KVM nVHE code has its own symbol namespace prefixed by __hyp_text_, to > + * isolate it from the kernel proper. The following symbols are legally > + * accessed by it, therefore provide aliases to make them linkable. > + * Do not include symbols which may not be safely accessed under hypervisor > + * memory mappings. > + */ nit: the prefix is not '__kvm_nvhe_' rather than '__hyp_text_'