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 025DFC433F5 for ; Sat, 4 Dec 2021 08:22:55 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 737366B0080; Sat, 4 Dec 2021 03:22:45 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6E6BB6B0081; Sat, 4 Dec 2021 03:22:45 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5D6026B0082; Sat, 4 Dec 2021 03:22:45 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0212.hostedemail.com [216.40.44.212]) by kanga.kvack.org (Postfix) with ESMTP id 4ED376B0080 for ; Sat, 4 Dec 2021 03:22:45 -0500 (EST) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id F21A0894CA for ; Sat, 4 Dec 2021 08:22:34 +0000 (UTC) X-FDA: 78879420228.27.DCB0DDD Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by imf13.hostedemail.com (Postfix) with ESMTP id 1DBF61046286 for ; Sat, 4 Dec 2021 08:22:33 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id E47D0CE1DF6; Sat, 4 Dec 2021 08:22:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 94264C341C0; Sat, 4 Dec 2021 08:22:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1638606149; bh=b4KdFEuyeTDkLRxTBS/8EoeINyZKLJit3rrz0W8btQg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dlLLOCnGeCwxKahR1hZVwxkC9YXA1U6VO7mAvQGe0DgPkTcQNOO6O5S7IVMmI/WSc G7ejFjsP9j/KsuDMASZreQ2mTY/+NO/Bu1i++Osc6KDBSjBT1aT86COTxUD/cKiZ6A T27mVcDDC6a5TCfr3iduF2FkJyLjr/KCJZRb2bGs= Date: Sat, 4 Dec 2021 09:22:24 +0100 From: Greg KH 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, 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 v3 5/5] drivers/node: Show in sysfs node's crypto capabilities Message-ID: References: <20211203192148.585399-1-martin.fernandez@eclypsium.com> <20211203192148.585399-6-martin.fernandez@eclypsium.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211203192148.585399-6-martin.fernandez@eclypsium.com> Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=linuxfoundation.org header.s=korg header.b=dlLLOCnG; dmarc=pass (policy=none) header.from=linuxfoundation.org; spf=pass (imf13.hostedemail.com: domain of gregkh@linuxfoundation.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 1DBF61046286 X-Stat-Signature: rot5oetof6c3ximp4y1x3qy773hn183w X-HE-Tag: 1638606153-331526 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 Fri, Dec 03, 2021 at 04:21:48PM -0300, Martin Fernandez wrote: > 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 > }; You forgot a Documentation/ABI/ update for this new sysfs file you added :(