From patchwork Fri Dec 3 19:21:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Fernandez X-Patchwork-Id: 520346 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C251CC433EF for ; Fri, 3 Dec 2021 19:23:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1382862AbhLCT0t (ORCPT ); Fri, 3 Dec 2021 14:26:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36700 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1382872AbhLCT0t (ORCPT ); Fri, 3 Dec 2021 14:26:49 -0500 Received: from mail-qt1-x835.google.com (mail-qt1-x835.google.com [IPv6:2607:f8b0:4864:20::835]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 04846C061354 for ; Fri, 3 Dec 2021 11:23:24 -0800 (PST) Received: by mail-qt1-x835.google.com with SMTP id t11so4399429qtw.3 for ; Fri, 03 Dec 2021 11:23:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=eclypsium.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=1/NfeKYIAhkUIAZJtgd6awxwNqUewAop8qMlhPdQIiw=; b=F+bvJUItKNdS/eTxqRFsYTDexgXI/WlDljElOv5rZ1FqdzNd6az6Wp/czLZQdFLjOD lHvZsZgt6E9hU7LI+B65d2ZU+suiM3hcuriSpE6E0LWvX8I0KAqfUtq/36ZvRlMgeIdK 3HfXFp5U+I6bslWX14LrDiOGVY7iEOjiF9LGHcOZib7XLql84nyPoykoceLbod734csg qd8vcajozXjJ+y83I7VW8TYvAzqBnrbf/+9VM93/n0R5Ds7xq1TTKlnKYm0bmwtUS7aj LOGUV6d0skEhoIPsXCilztMkKXECKdNDMqcLyrI/RJxormDDNBCcpxBVZXQqzCK3vEGH qUow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=1/NfeKYIAhkUIAZJtgd6awxwNqUewAop8qMlhPdQIiw=; b=IhTEbP5pGeM5M6ZO+zuG1JzLoGXLOpPMDqryIkveB/zKebzYif0+BJTRCcF3ChyX7x Vr/B5bvIopkB7HfQAdL0ACeF/96i4CCH9GF4YA7ozgPmQgELjc5PkNY5aHj17Hv1TXZD rxFx5hKLlfHYRQ7ct10npif+3pBecwo1/T2uiyI3eG+cUM8iN56ujylV4Ym1r4EU4rEe O5HmtMb/8vuQtCE6fqOxX3FjA6ISQPU9wikHv7SRYNhftJk3foauKb9v+ljiYQ5yJyot uaD+vbPCS5fogRYPh5w/UGTSAjHVL6m1rQ2ZING/o0c2L4eQwsn9RyL07M0quCAurLXc rEKw== X-Gm-Message-State: AOAM532bzH5IRDpwBqYTh+tGts15U8IT425TA8DtwZvu8Pw1WBbOTl7L vl2DieApXidLMecavZU9wY325w== X-Google-Smtp-Source: ABdhPJwnDlYpqgkf/Sf5zgNg//Uz5Zqh1xUeIEbLhDHGR1sxM6ZGnX3ghbkytQe24N4WA113II3Buw== X-Received: by 2002:a05:622a:1a04:: with SMTP id f4mr23050973qtb.476.1638559404100; Fri, 03 Dec 2021 11:23:24 -0800 (PST) Received: from localhost (7-153-16-190.fibertel.com.ar. [190.16.153.7]) by smtp.gmail.com with ESMTPSA id w10sm3099663qtk.90.2021.12.03.11.23.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Dec 2021 11:23:23 -0800 (PST) From: Martin Fernandez To: linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-mm@kvack.org Cc: 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, Martin Fernandez Subject: [PATCH v3 5/5] drivers/node: Show in sysfs node's crypto capabilities Date: Fri, 3 Dec 2021 16:21:48 -0300 Message-Id: <20211203192148.585399-6-martin.fernandez@eclypsium.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211203192148.585399-1-martin.fernandez@eclypsium.com> References: <20211203192148.585399-1-martin.fernandez@eclypsium.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org Show in each node in sysfs if its memory is able to do be encrypted by the CPU, ie. if all its memory is marked with EFI_MEMORY_CPU_CRYPTO in the EFI memory map. Signed-off-by: Martin Fernandez --- drivers/base/node.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/base/node.c b/drivers/base/node.c index b5a4ba18f9f9..67b0e2fa93b1 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -560,11 +560,21 @@ static ssize_t node_read_distance(struct device *dev, } static DEVICE_ATTR(distance, 0444, node_read_distance, NULL); +static ssize_t crypto_capable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct pglist_data *pgdat = NODE_DATA(dev->id); + + return sysfs_emit(buf, "%d\n", pgdat->crypto_capable); +} +static DEVICE_ATTR_RO(crypto_capable); + static struct attribute *node_dev_attrs[] = { &dev_attr_meminfo.attr, &dev_attr_numastat.attr, &dev_attr_distance.attr, &dev_attr_vmstat.attr, + &dev_attr_crypto_capable.attr, NULL };