From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by mx.groups.io with SMTP id smtpd.web08.6014.1634194937508967781 for ; Thu, 14 Oct 2021 00:02:17 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=OE+UKX7y; spf=pass (domain: redhat.com, ip: 170.10.133.124, mailfrom: kraxel@redhat.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634194936; 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: in-reply-to:in-reply-to:references:references; bh=FomyeBrxEgaRhlE9FCqrKJDFNCwWzGMQJRFnfEkDjjg=; b=OE+UKX7yZOAB2UuVgOdhyrt+idKcEUjOgDhkmWDjdkjbodJO7rqMY/IYVLG/lmFLW5jcxe 9ayS+n5pktiKY/UOa0fCqNKlZneZc6ZUeGnn511+tO4qr+BI5L8C3otFcaX5LiwwQSiiiu 75GrfouEUM+b7xosRExj8GWD4b/v32A= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-456-yw4vKaxVMZ2x4SCSvakq_Q-1; Thu, 14 Oct 2021 03:02:13 -0400 X-MC-Unique: yw4vKaxVMZ2x4SCSvakq_Q-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CDDDC100C661; Thu, 14 Oct 2021 07:02:11 +0000 (UTC) Received: from sirius.home.kraxel.org (unknown [10.39.192.23]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 55E4F5DEFA; Thu, 14 Oct 2021 07:02:11 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 4AABF18007AC; Thu, 14 Oct 2021 09:02:09 +0200 (CEST) Date: Thu, 14 Oct 2021 09:02:09 +0200 From: "Gerd Hoffmann" To: Brijesh Singh Cc: devel@edk2.groups.io, James Bottomley , Min Xu , Jiewen Yao , Tom Lendacky , Jordan Justen , Ard Biesheuvel , Erdem Aktas , Michael Roth Subject: Re: [PATCH v9 03/32] OvmfPkg/ResetVector: move clearing GHCB in SecMain Message-ID: <20211014070209.hvryyqkow7g6g3sh@sirius.home.kraxel.org> References: <20211013165713.727815-1-brijesh.singh@amd.com> <20211013165713.727815-4-brijesh.singh@amd.com> MIME-Version: 1.0 In-Reply-To: <20211013165713.727815-4-brijesh.singh@amd.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Oct 13, 2021 at 11:56:44AM -0500, Brijesh Singh wrote: > BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275 > > In preparation for SEV-SNP support move clearing of the GHCB memory from > the ResetVector/AmdSev.asm to SecMain/AmdSev.c. The GHCB page is not > accessed until SevEsProtocolCheck() switch to full GHCB. So, the move > does not make any changes in the code flow or logic. The move will > simplify the SEV-SNP support. Acked-by: Gerd Hoffmann