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]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E3651173 for ; Tue, 20 Jul 2021 09:34:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626773648; 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=XV8I+8PwrPZnsF+J0mVxJplAW6dmriYfcaV2/c4g/9o=; b=WthOuSGhVf4S3MefE1++wgzlL8Nr4vgl31+lDZIlt2DdHdhLU63Svh+o50B8md/yyvLlCN aFGtXGsk94p/RswRJgfqipsF+dqZJ3+TBvvPCo4xOZTFXfka1P2Lf/FNGKHwwj0GvHYTzH lRFfdDX6AiyK7KL4oNuyDZgXnMZOZno= Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-542-VsF9uey6NeSuV3WE8k9GgA-1; Tue, 20 Jul 2021 05:34:05 -0400 X-MC-Unique: VsF9uey6NeSuV3WE8k9GgA-1 Received: by mail-wr1-f70.google.com with SMTP id h11-20020adffa8b0000b029013a357d7bdcso10084071wrr.18 for ; Tue, 20 Jul 2021 02:34:04 -0700 (PDT) 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:user-agent; bh=XV8I+8PwrPZnsF+J0mVxJplAW6dmriYfcaV2/c4g/9o=; b=FXG57LO1VIdQ/uZFVmq4ikTbipVBE+Anc6mchhgKcaC8KkM/4pCFT0HEIijQ+xUsj7 qanfs4rEt83iQwxgE3Y7kW7KTN8xgw3GbO9p4iRjqmQBq35YYKrjX+lIufUt/BAcDE2Z 8Unaizd6WYMNeTf8TVCQNKNi2gVMEZiV/VfQiWTCb1Ki1ZSlni21+pWsAiKaaXbCZLVo Y9wRvisxQFC2ihbZrvdUqBGCo/nZtIU7TZkfJ8lpPv0R9kuofilLEPDJgLNgEFYn330d uKy2ptUoQIFF7+Z9u/jNrGrZvfy76arHKE+RM4wyUb1HFbY/kg3BYBfrMQUYFggfq7dW iX/Q== X-Gm-Message-State: AOAM533Z3Ii83/d80CvtiDNz4Bm6/V0ozrNi06Qs7/DfTZI4WukFFWJG w9gQEjGyNiV4t+s+qShKq8jNzFLTRtnfj/vL3J2GmB49Xj01n3rSqGSLUgnMVoZZtHoQ+ibsY88 b/HciXESZjBHQfugcwmSv+A== X-Received: by 2002:a5d:6a4d:: with SMTP id t13mr34507217wrw.412.1626773644015; Tue, 20 Jul 2021 02:34:04 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwzHZhKwHX+Y1GZJBHsqWHJ/kZvRIkpWuNhFWkVYJa0xNJrWABu4uaUEH0JtFI36tYQoLgyHQ== X-Received: by 2002:a5d:6a4d:: with SMTP id t13mr34507193wrw.412.1626773643871; Tue, 20 Jul 2021 02:34:03 -0700 (PDT) Received: from work-vm (cpc109021-salf6-2-0-cust453.10-2.cable.virginm.net. [82.29.237.198]) by smtp.gmail.com with ESMTPSA id 129sm19560994wmz.26.2021.07.20.02.34.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jul 2021 02:34:03 -0700 (PDT) Date: Tue, 20 Jul 2021 10:34:01 +0100 From: "Dr. David Alan Gilbert" To: Joerg Roedel Cc: Andi Kleen , David Rientjes , Borislav Petkov , Andy Lutomirski , Sean Christopherson , Andrew Morton , Vlastimil Babka , "Kirill A. Shutemov" , Brijesh Singh , Tom Lendacky , Jon Grimm , Thomas Gleixner , Peter Zijlstra , Paolo Bonzini , Ingo Molnar , "Kaplan, David" , Varad Gautam , Dario Faggioli , x86@kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev Subject: Re: Runtime Memory Validation in Intel-TDX and AMD-SNP Message-ID: References: <4e33d22e-330f-c5ba-bc15-08a3298598c5@linux.intel.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/2.0.7 (2021-05-04) Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi, Does the bitmap need to be page granulairty or can we work on bigger chunks? Dave -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK