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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9651C433FE for ; Mon, 7 Feb 2022 21:19:38 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 81FFE6B0078; Mon, 7 Feb 2022 16:19:38 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 7D1466B007B; Mon, 7 Feb 2022 16:19:38 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6BE466B007D; Mon, 7 Feb 2022 16:19:38 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0047.hostedemail.com [216.40.44.47]) by kanga.kvack.org (Postfix) with ESMTP id 5F4586B0078 for ; Mon, 7 Feb 2022 16:19:38 -0500 (EST) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 1B1508249980 for ; Mon, 7 Feb 2022 21:19:38 +0000 (UTC) X-FDA: 79117250436.06.8733130 Received: from mail-pj1-f54.google.com (mail-pj1-f54.google.com [209.85.216.54]) by imf10.hostedemail.com (Postfix) with ESMTP id A1D24C0003 for ; Mon, 7 Feb 2022 21:19:37 +0000 (UTC) Received: by mail-pj1-f54.google.com with SMTP id r64-20020a17090a43c600b001b8854e682eso492511pjg.0 for ; Mon, 07 Feb 2022 13:19:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=pdFN1ZKsA/YSf3iQfelOyB5WGeNlhqGxKv0TjnYhqCw=; b=hGP2z8WlqXW91XSk1T+J/0Fo1BNWKmusXsyof4H8KgNs72J9pJKnvxlUoezJY4h2X2 Sr9MFA0oeHSSVv73r42USLZrOWrOUCIVOlmdpqMijvS6WQpbTwVFf91QMXwjThIolVo0 3X/sm+d1zY1DauWA/+SbpQTkDuSGu1z6QeSXY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=pdFN1ZKsA/YSf3iQfelOyB5WGeNlhqGxKv0TjnYhqCw=; b=koEASNMicvIaLucaiCrHYtcDs6fRUgA8i1spMKf+Oonw+2jbCQvYpQXXyyB9WQLTgo HOSoi2jnnwB91h4NZYBzamUR+DAIdUtx4SgIB7iIvJHrYmeuPBjWZLpH6iAupR62upOx WSEOHTOAwP+MrrBI3Qpj4fl70FOHNWwQq9BUTrqJ2UXGmt43Kd7tiE/YXt+3dWo/RGl2 G7gwJ5rzFy/Q6edl1KXoXeiHrjxnlFb/rC5zKU3U7EmCPo/GYKZpUMK5QR2+x0Whka46 GedaYltaV1tYU6zrDCSd0D0I83QnqytkVRi2B14d1O0R9/Vn7YZomnZ99GYBvZWdOxrN jJmg== X-Gm-Message-State: AOAM533AR3NwhLdVNrc9cc31OKbZHCXr4WcGgGxmNMa5T9KqGgBkjUsN RPCUh+g4yt35Wf6jzLfAPhEfiw== X-Google-Smtp-Source: ABdhPJymf2h+6EaVKb8/3BSQSEdv13EBA0Lx1vE86AVMgBddqJ2jeXxg3Bg3b4zVwzdlUgbqsFy0Kg== X-Received: by 2002:a17:902:ce8a:: with SMTP id f10mr1164071plg.35.1644268776718; Mon, 07 Feb 2022 13:19:36 -0800 (PST) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id 8sm264182pjs.39.2022.02.07.13.19.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Feb 2022 13:19:36 -0800 (PST) Date: Mon, 7 Feb 2022 13:19:35 -0800 From: Kees Cook To: Martin Fernandez Cc: linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-mm@kvack.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, ardb@kernel.org, dvhart@infradead.org, andy@infradead.org, gregkh@linuxfoundation.org, rafael@kernel.org, rppt@kernel.org, akpm@linux-foundation.org, daniel.gutson@eclypsium.com, hughsient@gmail.com, alex.bazhaniuk@eclypsium.com, alison.schofield@intel.com Subject: Re: [PATCH v6 2/6] mm/mmzone: Tag pg_data_t with crypto capabilities Message-ID: <202202071319.846BFE23@keescook> References: <20220203164328.203629-1-martin.fernandez@eclypsium.com> <20220203164328.203629-3-martin.fernandez@eclypsium.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220203164328.203629-3-martin.fernandez@eclypsium.com> X-Stat-Signature: s6j5hytjdwnbzufky8bsie99txnd35k6 X-Rspam-User: nil Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=hGP2z8Wl; spf=pass (imf10.hostedemail.com: domain of keescook@chromium.org designates 209.85.216.54 as permitted sender) smtp.mailfrom=keescook@chromium.org; dmarc=pass (policy=none) header.from=chromium.org X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: A1D24C0003 X-HE-Tag: 1644268777-567317 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000421, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Feb 03, 2022 at 01:43:24PM -0300, Martin Fernandez wrote: > Add a new member in the pg_data_t struct tell whether the node > corresponding to that pg_data_t is able to do hardware memory encryption. > > This will be read from sysfs. > > Signed-off-by: Martin Fernandez Seems reasonable, and doesn't grow the structure size. :) Reviewed-by: Kees Cook -- Kees Cook