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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 B2C3DC4320A for ; Fri, 13 Aug 2021 10:47:11 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 1EBE86023B for ; Fri, 13 Aug 2021 10:47:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1EBE86023B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 9853F6B006C; Fri, 13 Aug 2021 06:47:10 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 935836B0071; Fri, 13 Aug 2021 06:47:10 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 824B36B0072; Fri, 13 Aug 2021 06:47:10 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0025.hostedemail.com [216.40.44.25]) by kanga.kvack.org (Postfix) with ESMTP id 695B46B006C for ; Fri, 13 Aug 2021 06:47:10 -0400 (EDT) Received: from smtpin35.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 188C1180AE81E for ; Fri, 13 Aug 2021 10:47:10 +0000 (UTC) X-FDA: 78469730220.35.185669B Received: from mail.skyhub.de (mail.skyhub.de [5.9.137.197]) by imf12.hostedemail.com (Postfix) with ESMTP id 2972B10166BF for ; Fri, 13 Aug 2021 10:47:08 +0000 (UTC) Received: from zn.tnic (p200300ec2f0a0d0079874d21390dee82.dip0.t-ipconnect.de [IPv6:2003:ec:2f0a:d00:7987:4d21:390d:ee82]) (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 CB1E81EC0390; Fri, 13 Aug 2021 12:47:02 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1628851622; 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=XmnLEzAhzOr7go9Tws2WK6fpL+x7aLZgyQqDx6MzxiE=; b=K7pPLi+l6xsBgICUo31Urs0pNH4asQI3bGtJ3ZL06c0vaRJVCEnWEAirmzYhQYnNvpoBmR bC9rrsPLK3gHgK1reXS8f7LGdgNZGiXNBuGJsT8HMbMIG0vRBzPzUijsRpRFIW7P/lbRPP MSBF/r3NSFBWWbXBRI4N672W+nm0UBY= Date: Fri, 13 Aug 2021 12:47:41 +0200 From: Borislav Petkov To: Brijesh Singh Cc: x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org, Thomas Gleixner , Ingo Molnar , Joerg Roedel , Tom Lendacky , "H. Peter Anvin" , Ard Biesheuvel , Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Andy Lutomirski , Dave Hansen , Sergio Lopez , Peter Gonda , Peter Zijlstra , Srinivas Pandruvada , David Rientjes , Dov Murik , Tobin Feldman-Fitzthum , Michael Roth , Vlastimil Babka , tony.luck@intel.com, npmccallum@redhat.com, brijesh.ksingh@gmail.com Subject: Re: [PATCH Part1 RFC v4 10/36] x86/compressed: Register GHCB memory when SEV-SNP is active Message-ID: References: <20210707181506.30489-1-brijesh.singh@amd.com> <20210707181506.30489-11-brijesh.singh@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20210707181506.30489-11-brijesh.singh@amd.com> X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 2972B10166BF X-Stat-Signature: potom6n9gtc4d4g5us33447e7nn83frk Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=alien8.de header.s=dkim header.b=K7pPLi+l; dmarc=pass (policy=none) header.from=alien8.de; spf=pass (imf12.hostedemail.com: domain of bp@alien8.de designates 5.9.137.197 as permitted sender) smtp.mailfrom=bp@alien8.de X-HE-Tag: 1628851628-583361 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Jul 07, 2021 at 01:14:40PM -0500, Brijesh Singh wrote: > diff --git a/arch/x86/include/asm/sev-common.h b/arch/x86/include/asm/sev-common.h > index aee07d1bb138..b19d8d301f5d 100644 > --- a/arch/x86/include/asm/sev-common.h > +++ b/arch/x86/include/asm/sev-common.h > @@ -45,6 +45,17 @@ > (((unsigned long)reg & GHCB_MSR_CPUID_REG_MASK) << GHCB_MSR_CPUID_REG_POS) | \ > (((unsigned long)fn) << GHCB_MSR_CPUID_FUNC_POS)) > > +/* GHCB GPA Register */ > +#define GHCB_MSR_GPA_REG_REQ 0x012 > +#define GHCB_MSR_GPA_REG_VALUE_POS 12 > +#define GHCB_MSR_GPA_REG_GFN_MASK GENMASK_ULL(51, 0) > +#define GHCB_MSR_GPA_REQ_GFN_VAL(v) \ > + (((unsigned long)((v) & GHCB_MSR_GPA_REG_GFN_MASK) << GHCB_MSR_GPA_REG_VALUE_POS)| \ > + GHCB_MSR_GPA_REG_REQ) > + > +#define GHCB_MSR_GPA_REG_RESP 0x013 > +#define GHCB_MSR_GPA_REG_RESP_VAL(v) ((v) >> GHCB_MSR_GPA_REG_VALUE_POS) Simplify... -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette