Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp497654pxj; Thu, 27 May 2021 05:25:06 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwQyAuXyZHtL9DDF4+6g5Ew+fe9L4cc04PCZetdoKiM7sQusVUJX1Ax4NBbEUF+ftIXoj+R X-Received: by 2002:a05:6e02:e51:: with SMTP id l17mr2773687ilk.107.1622118306417; Thu, 27 May 2021 05:25:06 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1622118306; cv=none; d=google.com; s=arc-20160816; b=LrdZUXRJbun0ITwtjPKff+cmj4QuoJSoh65JVQxi33RdA1P4bERX5Scu7hHUb+W1oK cjM6UhvRaUWtHe9o52jcGY4BF3B76mCOT3d2y8virCr270izlQfQ2Y2l8GmCeE2sBswM P/Oh65v4ei2rm1J86t84tEqQjCTTfNn5JrO86R72Q5xFKuh2ygbH+/gItisPJRF9u8SH Iffjsh+ktM4cFt86DwEPf1gar6v+4exB1q5MGkbP44tHpG+rTjTVKHZLQzO5E1ZmOaAf DHIe4D2h04zj8UH1Pq+DR+NvSG5AIVLzVaxuWVDCkngY8OqoWl8MtjCsfWvI8dCCCIVr +j/w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=XmPZBX9quvpk0nriJ9voXMcog/6QnU2qkiYE1ANKHdM=; b=Pembm7BM8x8aUOwnCbazTymv/sjQOsmyl8uMQS9MUm5FsfamKVHncz7xipmJwPIyiI aGDXHp5BzPmUy06WECu17s4F4F7mxi5eZbAb9O7icpvw26JKODhpGS+sDJSF1vK++b8v gKu5C0aexl+NZfmBtrS41qKRIEDpuVd7nv/mk2q/M8UzeDbBq2M2MIKnDpPeLvRsDcRh iqaWcMsBmla2ib3nrkFdgEzVuQ5G/vuPKAwrR5IFUNzOV9g/nhLmnhdsRxNdpS1V3wnX A9O7spOgVKdXTXVPsxRE9KanYQkCoYeTI/06KW68aSAwPQV45gPl7Sf5rFLKp/fPbi2A 5b7A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=MehT+vNx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id x8si2053852ill.30.2021.05.27.05.24.52; Thu, 27 May 2021 05:25:06 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=MehT+vNx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235038AbhE0MZL (ORCPT + 99 others); Thu, 27 May 2021 08:25:11 -0400 Received: from mail.skyhub.de ([5.9.137.197]:33996 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234410AbhE0MZL (ORCPT ); Thu, 27 May 2021 08:25:11 -0400 Received: from zn.tnic (p200300ec2f0f0200feb4df54292f983f.dip0.t-ipconnect.de [IPv6:2003:ec:2f0f:200:feb4:df54:292f:983f]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 7CC271EC01DF; Thu, 27 May 2021 14:23:37 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1622118217; 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:in-reply-to:in-reply-to: references:references; bh=XmPZBX9quvpk0nriJ9voXMcog/6QnU2qkiYE1ANKHdM=; b=MehT+vNxndiAuJk5SqOte+CQFxNPHQD3le5s/qF9DvFyzrQpAL/X5Rjc4LCKYcSIwmM4vf 1c+BomWYBxyeugJTfBId24lmvaidt8QLTKLZvJ5DqIUojQx6sncr/ToCW/vAGsXe+G2jsH t7VAj52oGLWysFxkc89avI71oEVvdxk= Date: Thu, 27 May 2021 14:23:35 +0200 From: Borislav Petkov To: Brijesh Singh Cc: x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, tglx@linutronix.de, jroedel@suse.de, thomas.lendacky@amd.com, pbonzini@redhat.com, mingo@redhat.com, dave.hansen@intel.com, rientjes@google.com, seanjc@google.com, peterz@infradead.org, hpa@zytor.com, tony.luck@intel.com Subject: Re: [PATCH Part1 RFC v2 16/20] x86/kernel: Validate rom memory before accessing when SEV-SNP is active Message-ID: References: <20210430121616.2295-1-brijesh.singh@amd.com> <20210430121616.2295-17-brijesh.singh@amd.com> <588df124-6213-22c4-384f-49fa368bb7ed@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <588df124-6213-22c4-384f-49fa368bb7ed@amd.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 27, 2021 at 07:12:00AM -0500, Brijesh Singh wrote: > Let me know if you still think that snp_prep_memory() helper is required. Yes, I still do think that because you can put the comment and all the manupulation of parameters in there and have a single oneliner in probe_roms.c: snp_prep_memory(...); and have the details in sev.c where they belong. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette