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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D075C433EF for ; Tue, 26 Apr 2022 06:17:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235751AbiDZGUK (ORCPT ); Tue, 26 Apr 2022 02:20:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51554 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232042AbiDZGUI (ORCPT ); Tue, 26 Apr 2022 02:20:08 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07BD7101FC; Mon, 25 Apr 2022 23:17:02 -0700 (PDT) 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 ams.source.kernel.org (Postfix) with ESMTPS id 9B5C0B81B3A; Tue, 26 Apr 2022 06:17:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D7B91C385A0; Tue, 26 Apr 2022 06:16:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1650953819; bh=ANH3UTZLZ+hrLRQUGigFumQFldVbaQC5gsVuGlcgcGc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=lWgfMDM+ZJ60+fK3LlOiWlrEb0jOc3QwdWyzxmKvqG2Qstz4rqSTKh/b5UVRorkvr rdo5xaJI7jflFyoYq1LYu1ds9aY9rpiEr6XtxisLN+Tbeq4A4ReBcJlixUNFKOtCVA Cg4bgDpHANgPWx9q9PECu8I0tSOwwbtuQ0KK7AuPKlmCEFmX1VAi8KPLs4W1t4DNtO a19ZR22jmqTtZ+a1FPq499wlc1vDaUqawRFizxC0ImwB3Aerlr5Jg6b2GstX66J9JL UOynuNg+6YXYNG/XGKs1rl6UpJs7w1AGIWxr2+WndT28AZ91UHh0nzhonGdw3a1jN0 2SIyHBB1zSLZQ== Date: Tue, 26 Apr 2022 09:16:48 +0300 From: Mike Rapoport 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, akpm@linux-foundation.org, daniel.gutson@eclypsium.com, hughsient@gmail.com, alex.bazhaniuk@eclypsium.com, alison.schofield@intel.com, keescook@chromium.org Subject: Re: [PATCH v7 2/8] mm/mmzone: Tag pg_data_t with crypto capabilities Message-ID: References: <20220425171526.44925-1-martin.fernandez@eclypsium.com> <20220425171526.44925-3-martin.fernandez@eclypsium.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220425171526.44925-3-martin.fernandez@eclypsium.com> Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org On Mon, Apr 25, 2022 at 02:15:20PM -0300, Martin Fernandez wrote: > Add a new member in the pg_data_t struct to 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 Reviewed-by: Mike Rapoport > --- > include/linux/mmzone.h | 3 +++ > mm/page_alloc.c | 1 + > 2 files changed, 4 insertions(+) > > diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h > index 46ffab808f03..89054af9e599 100644 > --- a/include/linux/mmzone.h > +++ b/include/linux/mmzone.h > @@ -886,6 +886,9 @@ typedef struct pglist_data { > struct task_struct *kcompactd; > bool proactive_compact_trigger; > #endif > + > + bool crypto_capable; > + > /* > * This is a per-node reserve of pages that are not available > * to userspace allocations. > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 0e42038382c1..a244151045b4 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -7699,6 +7699,7 @@ static void __init free_area_init_node(int nid) > pgdat->node_id = nid; > pgdat->node_start_pfn = start_pfn; > pgdat->per_cpu_nodestats = NULL; > + pgdat->crypto_capable = memblock_node_is_crypto_capable(nid); > > if (start_pfn != end_pfn) { > pr_info("Initmem setup node %d [mem %#018Lx-%#018Lx]\n", nid, > -- > 2.30.2 > > -- Sincerely yours, Mike.