From patchwork Fri Dec 3 19:21:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Fernandez X-Patchwork-Id: 12655711 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 8294EC433F5 for ; Fri, 3 Dec 2021 19:23:26 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id AA0B56B007D; Fri, 3 Dec 2021 14:23:06 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id A4F8F6B007E; Fri, 3 Dec 2021 14:23:06 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9175F6B0080; Fri, 3 Dec 2021 14:23:06 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0125.hostedemail.com [216.40.44.125]) by kanga.kvack.org (Postfix) with ESMTP id 84AA36B007D for ; Fri, 3 Dec 2021 14:23:06 -0500 (EST) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 457B81810613A for ; Fri, 3 Dec 2021 19:22:56 +0000 (UTC) X-FDA: 78877455552.29.14642F6 Received: from mail-qt1-f174.google.com (mail-qt1-f174.google.com [209.85.160.174]) by imf24.hostedemail.com (Postfix) with ESMTP id D0A51B00009E for ; Fri, 3 Dec 2021 19:22:55 +0000 (UTC) Received: by mail-qt1-f174.google.com with SMTP id t11so4398008qtw.3 for ; Fri, 03 Dec 2021 11:22:55 -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=YZB6hNG7HmOAiIB6oy3KuM5EzuvMU42E5iksCY/2vUM=; b=EGbtPZpC5K1SXrEhrNeKSNSQjgPJV1dIbuV86xslhBd0+FKexmSBkE5xturKYZmlb1 n+YzgwQhvT0cBhMSc0ACcF4V93BTdb+SLhYyC7IlYm5HSSt8DrV4Lfjlm3KlRL7nIsq6 gizk8XMhGIxyCoLk1Th66Xve8gYxMovynr1swAjG/pMq2T04beCXld5P3WVF6cBUfoV1 kkRxuyUqnlhX0TXal/8tObJYE3JAWR0se6Ebdch4svodpUhemHQEZePGpBziGVQHrahh p5UvHBml+qnlrQNCl+XlCTdHjFRvHq3JoUEMK4qWPs8+164fBcd0N3AB1CIMfDmVUUqj Ea+w== 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=YZB6hNG7HmOAiIB6oy3KuM5EzuvMU42E5iksCY/2vUM=; b=pmE6rG5KfL3hqD2Regmt0pyp8Q6Ga8B9nx/jygH6q8yBPh8dYm+5kb/2iqSgt9gyEn V1QaD4bqwU6DFEBbHPR7gJ0NYXVZpQ89o7OVL5ihF5MKIJ5ZOiiG1XA54x/vU8as+uaq X82JdAbeywFkJbuHshKfynbZnRx9vY2KAUM73gOv+nzJrRdXP3xrzT/+s0uzN9Tg1nAC v0G43BHLKOfkRFypahlbZLYXoXIpokl1kv4G21Yls7xdQEpreJvz964PrTa/nRvSjZ5q fZLRJ3X8cIjJmIvaXKpfmozHVHcw/X7K8+GAfHVc8J+6LzVVxFU5UgK4ILTOl84wkakx OUAA== X-Gm-Message-State: AOAM533MPXm6lJwY6a6KinSHRUBfjgW5+CAXcFXfIaLATzbRW6E4e1qX OjZ5dMr1SL3tiWkAKximA+M/6Q== X-Google-Smtp-Source: ABdhPJyQcm3Npl/r6og4NZsfDZwcGWJnZCGjZtLTaKgvqAc3p1DuLiNuFU1R2A4+y9qiQTX7E1aNSw== X-Received: by 2002:ac8:7f8c:: with SMTP id z12mr22734828qtj.564.1638559375108; Fri, 03 Dec 2021 11:22:55 -0800 (PST) Received: from localhost (7-153-16-190.fibertel.com.ar. [190.16.153.7]) by smtp.gmail.com with ESMTPSA id c22sm2915239qtd.76.2021.12.03.11.22.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Dec 2021 11:22:54 -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 1/5] mm/memblock: Tag memblocks with crypto capabilities Date: Fri, 3 Dec 2021 16:21:44 -0300 Message-Id: <20211203192148.585399-2-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 X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: D0A51B00009E X-Stat-Signature: zptpai1bwpdo94kqmbpaw7sgw7tk9bbg Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=eclypsium.com header.s=google header.b=EGbtPZpC; spf=pass (imf24.hostedemail.com: domain of martin.fernandez@eclypsium.com designates 209.85.160.174 as permitted sender) smtp.mailfrom=martin.fernandez@eclypsium.com; dmarc=pass (policy=quarantine) header.from=eclypsium.com X-HE-Tag: 1638559375-548464 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: Add the capability to mark regions of the memory memory_type able of hardware memory encryption. Also add the capability to query if all regions of a memory node are able to do hardware memory encryption to call it when initializing the nodes. Signed-off-by: Martin Fernandez --- include/linux/memblock.h | 5 ++++ mm/memblock.c | 49 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 54 insertions(+) diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 8adcf1fa8096..ec808ad93693 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -41,6 +41,7 @@ extern unsigned long long max_possible_pfn; * via a driver, and never indicated in the firmware-provided memory map as * system RAM. This corresponds to IORESOURCE_SYSRAM_DRIVER_MANAGED in the * kernel resource tree. + * @MEMBLOCK_CRYPTO_CAPABLE: capable of hardware encryption */ enum memblock_flags { MEMBLOCK_NONE = 0x0, /* No special request */ @@ -48,6 +49,7 @@ enum memblock_flags { MEMBLOCK_MIRROR = 0x2, /* mirrored region */ MEMBLOCK_NOMAP = 0x4, /* don't add to kernel direct mapping */ MEMBLOCK_DRIVER_MANAGED = 0x8, /* always detected via a driver */ + MEMBLOCK_CRYPTO_CAPABLE = 0x10, /* capable of hardware encryption */ }; /** @@ -121,6 +123,9 @@ int memblock_physmem_add(phys_addr_t base, phys_addr_t size); void memblock_trim_memory(phys_addr_t align); bool memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size); +bool memblock_node_is_crypto_capable(int nid); +int memblock_mark_crypto_capable(phys_addr_t base, phys_addr_t size); +int memblock_clear_crypto_capable(phys_addr_t base, phys_addr_t size); int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size); int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size); int memblock_mark_mirror(phys_addr_t base, phys_addr_t size); diff --git a/mm/memblock.c b/mm/memblock.c index 1018e50566f3..61ec50647469 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -191,6 +191,27 @@ bool __init_memblock memblock_overlaps_region(struct memblock_type *type, return i < type->cnt; } +/** + * memblock_node_is_crypto_capable - get if whole node is capable + * of encryption + * @nid: number of node + * + * Iterate over all memory memblock_type and find if all regions under + * node @nid are capable of hardware encryption. + */ +bool __init_memblock memblock_node_is_crypto_capable(int nid) +{ + struct memblock_region *region; + + for_each_mem_region(region) { + if ((memblock_get_region_node(region) == nid) && + !(region->flags & MEMBLOCK_CRYPTO_CAPABLE)) + return false; + } + + return true; +} + /** * __memblock_find_range_bottom_up - find free area utility in bottom-up * @start: start of candidate range @@ -885,6 +906,34 @@ static int __init_memblock memblock_setclr_flag(phys_addr_t base, return 0; } +/** + * memblock_mark_crypto_capable - Mark memory regions capable of hardware + * encryption with flag MEMBLOCK_CRYPTO_CAPABLE. + * @base: the base phys addr of the region + * @size: the size of the region + * + * Return: 0 on success, -errno on failure. + */ +int __init_memblock memblock_mark_crypto_capable(phys_addr_t base, + phys_addr_t size) +{ + return memblock_setclr_flag(base, size, 1, MEMBLOCK_CRYPTO_CAPABLE); +} + +/** + * memblock_clear_crypto_capable - Clear flag MEMBLOCK_CRYPTO for a + * specified region. + * @base: the base phys addr of the region + * @size: the size of the region + * + * Return: 0 on success, -errno on failure. + */ +int __init_memblock memblock_clear_crypto_capable(phys_addr_t base, + phys_addr_t size) +{ + return memblock_setclr_flag(base, size, 0, MEMBLOCK_CRYPTO_CAPABLE); +} + /** * memblock_mark_hotplug - Mark hotpluggable memory with flag MEMBLOCK_HOTPLUG. * @base: the base phys addr of the region From patchwork Fri Dec 3 19:21:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Fernandez X-Patchwork-Id: 12655713 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 A7F7EC433EF for ; Fri, 3 Dec 2021 19:24:02 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 941376B007E; Fri, 3 Dec 2021 14:23:14 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 8EF876B0080; Fri, 3 Dec 2021 14:23:14 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7B8A96B0081; Fri, 3 Dec 2021 14:23:14 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0238.hostedemail.com [216.40.44.238]) by kanga.kvack.org (Postfix) with ESMTP id 6F10C6B007E for ; Fri, 3 Dec 2021 14:23:14 -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 374598BEF9 for ; Fri, 3 Dec 2021 19:23:04 +0000 (UTC) X-FDA: 78877455888.27.0BE6A82 Received: from mail-qk1-f169.google.com (mail-qk1-f169.google.com [209.85.222.169]) by imf21.hostedemail.com (Postfix) with ESMTP id 75BF0D0369DF for ; Fri, 3 Dec 2021 19:23:03 +0000 (UTC) Received: by mail-qk1-f169.google.com with SMTP id m186so4522644qkb.4 for ; Fri, 03 Dec 2021 11:23:03 -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=fAQwT03q8c+l0eyOEhJV/8Xp6eHvuAVKGl9g48A9iCY=; b=clFzSf9e3VT0Aifw8+wLenzhgUYBx9WPOIolV7/p5j9CmQALr33loOrBWvrnbgX5kw gYQAroelKHXjXVPxXLwVjXSpY8Xb70qAMvtSKow0C+C6fV08Uhon15VCTdXILVf2vZ4D NVwx6dK93jK25ZHTJ05OOAsvJOz7CJxY8Fs8A6xxjK1nESWJv+Ut7kjjVks1NigrRwK1 0s5yqUteIX8yqLWbfye0UTqaoyUsnMxKH65lBEDC0MoPPTlweWvW8vVZhN6UYrAU9+LN oH9rrGT20g5jswEzfFky+6I8sXvGhTtJ6N7KNSURQl/uv+ItgdGPQPCmWAM8h7otPH+6 jESA== 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=fAQwT03q8c+l0eyOEhJV/8Xp6eHvuAVKGl9g48A9iCY=; b=DfSv1vg/4XkxAaluEqhO3l3uSd6ytNGoAWV34bZcOlCIEOIHX/jYoQML2dihhJdxix jhNZf6B8QjvMszF2r32joF2v0itnCrrzdfewyXZO7vh+tR6ofq+IJZn4fD3dlxUinrpw 7OoxEj/1LnY7lIksm8vG2rpQpiYLfTIhRLBYdM5DXQVlVHueYlA+8Ja28AswXvUCyiry OF63hm1+UCD7WnSIj7bxfCv+38bpXS9tXlbG4QtvMmuJMB8qaKKmdRTXA2jJzD0JxZSl 35wrs/lpKKCqCZHFI+ZqXofH98DhWPghqEFdtjS9Obw++gLWOX3AXbd72mLOTX7FI1Cp nQtA== X-Gm-Message-State: AOAM532BX8vD01XlxqeCZJ5Cfy8xNJ0TdV3WD2Q9TkoErvaw2Da8m992 C2Z54mbXnNouyzuaNe5wIV+g5A== X-Google-Smtp-Source: ABdhPJySs0z8IxWpEZ5hyhMpFmb4t34bvvvcqFTLmUzenxDHobzGf8Am899FFne1ypwydPqvXoOcjg== X-Received: by 2002:a05:620a:2808:: with SMTP id f8mr19389014qkp.214.1638559382126; Fri, 03 Dec 2021 11:23:02 -0800 (PST) Received: from localhost (7-153-16-190.fibertel.com.ar. [190.16.153.7]) by smtp.gmail.com with ESMTPSA id d11sm2729269qtj.4.2021.12.03.11.22.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Dec 2021 11:23:01 -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 2/5] mm/mmzone: Tag pg_data_t with crypto capabilities Date: Fri, 3 Dec 2021 16:21:45 -0300 Message-Id: <20211203192148.585399-3-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 X-Rspamd-Queue-Id: 75BF0D0369DF Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=eclypsium.com header.s=google header.b=clFzSf9e; spf=pass (imf21.hostedemail.com: domain of martin.fernandez@eclypsium.com designates 209.85.222.169 as permitted sender) smtp.mailfrom=martin.fernandez@eclypsium.com; dmarc=pass (policy=quarantine) header.from=eclypsium.com X-Rspamd-Server: rspam04 X-Stat-Signature: k7cre5imhymkyh6mt4yaxb4p9fjeagkw X-HE-Tag: 1638559383-865853 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: 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 --- 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 58e744b78c2c..1e4f76a19c62 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -870,6 +870,9 @@ 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 c5952749ad40..8bcbd6fa0089 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -7592,6 +7592,7 @@ 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); pr_info("Initmem setup node %d [mem %#018Lx-%#018Lx]\n", nid, (u64)start_pfn << PAGE_SHIFT, From patchwork Fri Dec 3 19:21:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Fernandez X-Patchwork-Id: 12655715 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 D8DF8C433F5 for ; Fri, 3 Dec 2021 19:24:36 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id EBF876B0080; Fri, 3 Dec 2021 14:23:21 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id E95606B0081; Fri, 3 Dec 2021 14:23:21 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D36C66B0082; Fri, 3 Dec 2021 14:23:21 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0061.hostedemail.com [216.40.44.61]) by kanga.kvack.org (Postfix) with ESMTP id C69056B0080 for ; Fri, 3 Dec 2021 14:23:21 -0500 (EST) Received: from smtpin31.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 863E67D3C8 for ; Fri, 3 Dec 2021 19:23:11 +0000 (UTC) X-FDA: 78877456182.31.E307040 Received: from mail-qt1-f182.google.com (mail-qt1-f182.google.com [209.85.160.182]) by imf15.hostedemail.com (Postfix) with ESMTP id 71AF2D0000A9 for ; Fri, 3 Dec 2021 19:23:10 +0000 (UTC) Received: by mail-qt1-f182.google.com with SMTP id o17so4410322qtk.1 for ; Fri, 03 Dec 2021 11:23:10 -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=W+BCPwrkfsgMMS4oXA2uOS9qbqDP/1NzYAX0XstAOPU=; b=U+HdIylvbLsQR5mUAlSkHXa2EZgujqr2PfZyyuUnfjtStjWBrlQiqQ3kHkRjbas6NQ YjFUqoQ0HGLZxkg6HisxcfXwriBUXHUhUNxCqptjG1qcY7Cdp6+0XWYrTjM3Utz17QpF ujccrbJaQbhwLom9UFOpYiagFSK1LY9Tf8bIccw7uOgXmfGxI+kUXmnRTw2iA3IJJmt9 THXTUmhKbD+q/SNugQdTdiembrET7yDzISUDobQwlGhEDX4hXCper/zwM6e+UHD9HhuA wjygZeB9BLufK5NpSzV+Hohs1YZaWl5R9tz18DmqOIrQyyfJvJkvU9i+Hu1gMxd2Ym+G yxng== 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=W+BCPwrkfsgMMS4oXA2uOS9qbqDP/1NzYAX0XstAOPU=; b=B/7HEicEwXOGR+Yi8B9r74ZD+mdiCJo7dqibY8l4Z5FV3Mp5w+FxBRDUuPJr/xwzkM ELwL4z/LpbCp69MHNHu+0nocUFv/JDkyRnGaUhlyO/bw4WySMrI6MvitiN+Ok1rfL3S6 fWFyr+UCfZm1XccPFqd+vbIG9ASrMGz9mzTeOPT6HF8khgYPKhNpgI3q4CUbqnXpQJEd e5auxaP6gOqa7X7/wBjaPQPRtglf8rUJ+8YwBTy53gI+T9zGwKOyAiRoqE3UH68yoouM e0u+VdUkTrhlDw8aVDg8bn9W4+dI3S65rHIZPeouHcxj45qc2dyAknZOOgAdkqKFwWK1 HsPg== X-Gm-Message-State: AOAM531Lx9/AAiy4Hun6Rgow23v9d0LLFkt5t3EObdvWMIlWCRTNOiQt y+yF8XN3d1af3e0Eb6JD3uySCQ== X-Google-Smtp-Source: ABdhPJwZPKQUQQuJdGsuoQE6tR29ymL2DVFyI+TvkI2UCWmVzQzuaGwKyQ+vDmu5l9LNEuJXFwo24g== X-Received: by 2002:ac8:4a0e:: with SMTP id x14mr22854069qtq.345.1638559389583; Fri, 03 Dec 2021 11:23:09 -0800 (PST) Received: from localhost (7-153-16-190.fibertel.com.ar. [190.16.153.7]) by smtp.gmail.com with ESMTPSA id 22sm2969150qtw.12.2021.12.03.11.23.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Dec 2021 11:23:09 -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 3/5] Tag e820_entry with crypto capabilities Date: Fri, 3 Dec 2021 16:21:46 -0300 Message-Id: <20211203192148.585399-4-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 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 71AF2D0000A9 X-Stat-Signature: tiyfn9j98mzqu97xysf8akgu4pyi4xuk Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=eclypsium.com header.s=google header.b=U+HdIylv; spf=pass (imf15.hostedemail.com: domain of martin.fernandez@eclypsium.com designates 209.85.160.182 as permitted sender) smtp.mailfrom=martin.fernandez@eclypsium.com; dmarc=pass (policy=quarantine) header.from=eclypsium.com X-HE-Tag: 1638559390-872488 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: Add a new member in e820_entry to hold whether an entry is able to do hardware memory encryption or not. Add a new argument to __e820__range_add to accept this new crypto_capable. Add a new argument to __e820__update_range to be able to change a region's crypto_capable member. Also, change its behavior a little, before if you wanted to update a region with its same type it was a BUG_ON; now if you call it with both old_type and new_type equals, then the function won't change the types, just crypto_capable. Change e820__update_table to handle merging and overlap problems taking into account crypto_capable. Add a function to mark a range as crypto, using __e820__range_update in the background. This will be called when initializing EFI. Signed-off-by: Martin Fernandez --- arch/x86/include/asm/e820/api.h | 1 + arch/x86/include/asm/e820/types.h | 1 + arch/x86/kernel/e820.c | 59 ++++++++++++++++++++++++------- 3 files changed, 49 insertions(+), 12 deletions(-) diff --git a/arch/x86/include/asm/e820/api.h b/arch/x86/include/asm/e820/api.h index e8f58ddd06d9..677dcbabcc8b 100644 --- a/arch/x86/include/asm/e820/api.h +++ b/arch/x86/include/asm/e820/api.h @@ -17,6 +17,7 @@ extern bool e820__mapped_all(u64 start, u64 end, enum e820_type type); extern void e820__range_add (u64 start, u64 size, enum e820_type type); extern u64 e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type); extern u64 e820__range_remove(u64 start, u64 size, enum e820_type old_type, bool check_type); +extern u64 e820__range_mark_as_crypto_capable(u64 start, u64 size); extern void e820__print_table(char *who); extern int e820__update_table(struct e820_table *table); diff --git a/arch/x86/include/asm/e820/types.h b/arch/x86/include/asm/e820/types.h index 314f75d886d0..7b510dffd3b9 100644 --- a/arch/x86/include/asm/e820/types.h +++ b/arch/x86/include/asm/e820/types.h @@ -56,6 +56,7 @@ struct e820_entry { u64 addr; u64 size; enum e820_type type; + u8 crypto_capable; } __attribute__((packed)); /* diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index bc0657f0deed..001d64686938 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -163,7 +163,7 @@ int e820__get_entry_type(u64 start, u64 end) /* * Add a memory region to the kernel E820 map. */ -static void __init __e820__range_add(struct e820_table *table, u64 start, u64 size, enum e820_type type) +static void __init __e820__range_add(struct e820_table *table, u64 start, u64 size, enum e820_type type, u8 crypto_capable) { int x = table->nr_entries; @@ -176,12 +176,13 @@ static void __init __e820__range_add(struct e820_table *table, u64 start, u64 si table->entries[x].addr = start; table->entries[x].size = size; table->entries[x].type = type; + table->entries[x].crypto_capable = crypto_capable; table->nr_entries++; } void __init e820__range_add(u64 start, u64 size, enum e820_type type) { - __e820__range_add(e820_table, start, size, type); + __e820__range_add(e820_table, start, size, type, 0); } static void __init e820_print_type(enum e820_type type) @@ -211,6 +212,8 @@ void __init e820__print_table(char *who) e820_table->entries[i].addr + e820_table->entries[i].size - 1); e820_print_type(e820_table->entries[i].type); + if (e820_table->entries[i].crypto_capable) + pr_cont("; crypto-capable"); pr_cont("\n"); } } @@ -327,6 +330,7 @@ int __init e820__update_table(struct e820_table *table) unsigned long long last_addr; u32 new_nr_entries, overlap_entries; u32 i, chg_idx, chg_nr; + u8 current_crypto, last_crypto; /* If there's only one memory region, don't bother: */ if (table->nr_entries < 2) @@ -367,6 +371,7 @@ int __init e820__update_table(struct e820_table *table) new_nr_entries = 0; /* Index for creating new map entries */ last_type = 0; /* Start with undefined memory type */ last_addr = 0; /* Start with 0 as last starting address */ + last_crypto = 0; /* Loop through change-points, determining effect on the new map: */ for (chg_idx = 0; chg_idx < chg_nr; chg_idx++) { @@ -388,13 +393,17 @@ int __init e820__update_table(struct e820_table *table) * 1=usable, 2,3,4,4+=unusable) */ current_type = 0; + current_crypto = 1; for (i = 0; i < overlap_entries; i++) { + current_crypto = current_crypto && overlap_list[i]->crypto_capable; if (overlap_list[i]->type > current_type) current_type = overlap_list[i]->type; } /* Continue building up new map based on this information: */ - if (current_type != last_type || e820_nomerge(current_type)) { + if (current_type != last_type || + current_crypto != last_crypto || + e820_nomerge(current_type)) { if (last_type != 0) { new_entries[new_nr_entries].size = change_point[chg_idx]->addr - last_addr; /* Move forward only if the new size was non-zero: */ @@ -406,9 +415,12 @@ int __init e820__update_table(struct e820_table *table) if (current_type != 0) { new_entries[new_nr_entries].addr = change_point[chg_idx]->addr; new_entries[new_nr_entries].type = current_type; + new_entries[new_nr_entries].crypto_capable = current_crypto; + last_addr = change_point[chg_idx]->addr; } last_type = current_type; + last_crypto = current_crypto; } } @@ -459,14 +471,20 @@ static int __init append_e820_table(struct boot_e820_entry *entries, u32 nr_entr return __append_e820_table(entries, nr_entries); } +/* + * Update a memory range. + * + * If old_type and new_type are the same then ignore the types and + * just change crypto_capable. + */ static u64 __init -__e820__range_update(struct e820_table *table, u64 start, u64 size, enum e820_type old_type, enum e820_type new_type) +__e820__range_update(struct e820_table *table, u64 start, u64 size, enum e820_type old_type, enum e820_type new_type, u8 crypto_capable) { u64 end; unsigned int i; u64 real_updated_size = 0; - BUG_ON(old_type == new_type); + bool update_crypto = new_type == old_type; if (size > (ULLONG_MAX - start)) size = ULLONG_MAX - start; @@ -476,6 +494,8 @@ __e820__range_update(struct e820_table *table, u64 start, u64 size, enum e820_ty e820_print_type(old_type); pr_cont(" ==> "); e820_print_type(new_type); + if (crypto_capable) + pr_cont("; crypto-capable"); pr_cont("\n"); for (i = 0; i < table->nr_entries; i++) { @@ -483,22 +503,27 @@ __e820__range_update(struct e820_table *table, u64 start, u64 size, enum e820_ty u64 final_start, final_end; u64 entry_end; - if (entry->type != old_type) + if (entry->type != old_type && !update_crypto) continue; + if (update_crypto) + new_type = entry->type; + entry_end = entry->addr + entry->size; /* Completely covered by new range? */ if (entry->addr >= start && entry_end <= end) { entry->type = new_type; + entry->crypto_capable = crypto_capable; real_updated_size += entry->size; continue; } /* New range is completely covered? */ if (entry->addr < start && entry_end > end) { - __e820__range_add(table, start, size, new_type); - __e820__range_add(table, end, entry_end - end, entry->type); + __e820__range_add(table, start, size, new_type, crypto_capable); + __e820__range_add(table, end, entry_end - end, + entry->type, entry->crypto_capable); entry->size = start - entry->addr; real_updated_size += size; continue; @@ -510,7 +535,8 @@ __e820__range_update(struct e820_table *table, u64 start, u64 size, enum e820_ty if (final_start >= final_end) continue; - __e820__range_add(table, final_start, final_end - final_start, new_type); + __e820__range_add(table, final_start, final_end - final_start, + new_type, crypto_capable); real_updated_size += final_end - final_start; @@ -527,14 +553,19 @@ __e820__range_update(struct e820_table *table, u64 start, u64 size, enum e820_ty return real_updated_size; } +u64 __init e820__range_mark_as_crypto_capable(u64 start, u64 size) +{ + return __e820__range_update(e820_table, start, size, 0, 0, true); +} + u64 __init e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type) { - return __e820__range_update(e820_table, start, size, old_type, new_type); + return __e820__range_update(e820_table, start, size, old_type, new_type, false); } static u64 __init e820__range_update_kexec(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type) { - return __e820__range_update(e820_table_kexec, start, size, old_type, new_type); + return __e820__range_update(e820_table_kexec, start, size, old_type, new_type, false); } /* Remove a range of memory from the E820 table: */ @@ -572,7 +603,9 @@ u64 __init e820__range_remove(u64 start, u64 size, enum e820_type old_type, bool /* Is the new range completely covered? */ if (entry->addr < start && entry_end > end) { - e820__range_add(end, entry_end - end, entry->type); + __e820__range_add(e820_table, end, entry_end - end, + entry->type, entry->crypto_capable); + entry->size = start - entry->addr; real_removed_size += size; continue; @@ -1322,6 +1355,8 @@ void __init e820__memblock_setup(void) continue; memblock_add(entry->addr, entry->size); + if (entry->crypto_capable) + memblock_mark_crypto_capable(entry->addr, entry->size); } /* Throw away partial pages: */ From patchwork Fri Dec 3 19:21:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Fernandez X-Patchwork-Id: 12655717 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 D9D1FC433F5 for ; Fri, 3 Dec 2021 19:25:10 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6D1BD6B0081; Fri, 3 Dec 2021 14:23:28 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6A63F6B0082; Fri, 3 Dec 2021 14:23:28 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 546C56B0083; Fri, 3 Dec 2021 14:23:28 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0244.hostedemail.com [216.40.44.244]) by kanga.kvack.org (Postfix) with ESMTP id 47B216B0081 for ; Fri, 3 Dec 2021 14:23:28 -0500 (EST) Received: from smtpin10.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 0DE788249980 for ; Fri, 3 Dec 2021 19:23:18 +0000 (UTC) X-FDA: 78877456476.10.C703D35 Received: from mail-qk1-f177.google.com (mail-qk1-f177.google.com [209.85.222.177]) by imf05.hostedemail.com (Postfix) with ESMTP id 790B5100008 for ; Fri, 3 Dec 2021 19:23:17 +0000 (UTC) Received: by mail-qk1-f177.google.com with SMTP id g28so4501890qkk.9 for ; Fri, 03 Dec 2021 11:23:17 -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=DOUmdW1fRYRblflWGLh6NhnBa89lC/dRK/EDmCbffkQ=; b=G1d14RHa7UrlkA/IF01Z8YQG4CvIyt45yX0PQY8K+JyWYPW+oyKJQIG+GRjPntQ/hP ou2AVnIJ1IgRAczlzMziU3OOMiPodmd7LeistE3yUrLGGUrdG0MsZUNHY2ec4a3OMePI ZUSzk5Q9c5bFyneacsbYNItjSA6VMgWKK1V8i4QgQM2We+x6c3KcNIF9YSJXYhb5v86q E5QeAPGQknmUFHd1BBh/qQnj6klqE5he80uG6ex6JsbiC864m9pjPOQtwsiK4JKs0i5S 52jEeqJoOh1qW5AmWiGKl0w8R8P70CJC7hmAHXLx5BRs/FVnALON6i1F6khbavDI+0xS PIvQ== 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=DOUmdW1fRYRblflWGLh6NhnBa89lC/dRK/EDmCbffkQ=; b=spc14P7Xr9tpeeIrBuIwPKBVjd6BjTG3BpYWac6vuYAdtbs/5g7qmTej2bNgy/b7Bl mmnbrvldvfhT7vHaoI14p9JJCAvXDHz97y8QFsxURGbrZ2Ss7JhJgfLVh4yEQyIIdhj1 9vbK+d0p0O6qS+dtEvBvyDTTpmDNIlccSULX/21A7aRfu9/SjMc6pqVQpWhXWH4mo7gm vtUIN4SSQUSRGEalWK3lLIIhOoycLAn8MdwiZ9JjkbyIGvNNTpO6bCIHK8pl8T1smqKo j6rPR9wh/AFDFAM752/Qqk9ljmUcYFil2NAX+v9Mtb8Zg7wWjz31A2PRJhLdpjV1yt36 TT7A== X-Gm-Message-State: AOAM531fQyipGomECBrPrRUw5wsrWNWPfgwhUxNPEued0XVJom9R7hWx fl7PDTWIGPCweUHewCs9YHfvZg== X-Google-Smtp-Source: ABdhPJysstuFd57Wtr4jLrbWH+YQiZ6VtuUGJ/wlAcTvALz7QAJ5g1ppNuwguIeJyGHgD44SXkp3Nw== X-Received: by 2002:a37:9e0f:: with SMTP id h15mr18955179qke.679.1638559396809; Fri, 03 Dec 2021 11:23:16 -0800 (PST) Received: from localhost (7-153-16-190.fibertel.com.ar. [190.16.153.7]) by smtp.gmail.com with ESMTPSA id g14sm2784281qko.55.2021.12.03.11.23.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Dec 2021 11:23:16 -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 4/5] x86/efi: Tag e820_entries as crypto capable from EFI memmap Date: Fri, 3 Dec 2021 16:21:47 -0300 Message-Id: <20211203192148.585399-5-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 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 790B5100008 X-Stat-Signature: rw9qxjwjdcmhmc3fzouiqgrsg55dh5bf Authentication-Results: imf05.hostedemail.com; dkim=pass header.d=eclypsium.com header.s=google header.b=G1d14RHa; spf=pass (imf05.hostedemail.com: domain of martin.fernandez@eclypsium.com designates 209.85.222.177 as permitted sender) smtp.mailfrom=martin.fernandez@eclypsium.com; dmarc=pass (policy=quarantine) header.from=eclypsium.com X-HE-Tag: 1638559397-112252 X-Bogosity: Ham, tests=bogofilter, spamicity=0.025872, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Add a function to iterate over the EFI Memory Map and mark the regions tagged with EFI_MEMORY_CPU_CRYPTO in the e820_table; and call it from efi_init if add_efi_memmap is disabled. Also modify do_add_efi_memmap to mark the regions there. Signed-off-by: Martin Fernandez --- arch/x86/platform/efi/efi.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 147c30a81f15..38744fadcb9c 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -184,6 +184,8 @@ static void __init do_add_efi_memmap(void) } e820__range_add(start, size, e820_type); + if (md->attribute & EFI_MEMORY_CPU_CRYPTO) + e820__range_mark_as_crypto_capable(start, size); } e820__update_table(e820_table); } @@ -441,6 +443,22 @@ static int __init efi_config_init(const efi_config_table_type_t *arch_tables) return ret; } +static void __init efi_mark_e820_regions_as_crypto_capable(void) +{ + efi_memory_desc_t *md; + + for_each_efi_memory_desc(md) { + if (md->attribute & EFI_MEMORY_CPU_CRYPTO) + e820__range_mark_as_crypto_capable(md->phys_addr, md->num_pages << EFI_PAGE_SHIFT); + } + + /* + * We added and modified regions so it's good to update the + * table to merge/sort + */ + e820__update_table(e820_table); +} + void __init efi_init(void) { if (IS_ENABLED(CONFIG_X86_32) && @@ -494,6 +512,13 @@ void __init efi_init(void) set_bit(EFI_RUNTIME_SERVICES, &efi.flags); efi_clean_memmap(); + /* + * If add_efi_memmap then there is no need to mark the regions + * again + */ + if (!add_efi_memmap) + efi_mark_e820_regions_as_crypto_capable(); + if (efi_enabled(EFI_DBG)) efi_print_memmap(); } 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: 12655719 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 A8D8EC433EF for ; Fri, 3 Dec 2021 19:25:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B8B9F6B0082; Fri, 3 Dec 2021 14:23:35 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B39BD6B0083; Fri, 3 Dec 2021 14:23:35 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9DB9D6B0085; Fri, 3 Dec 2021 14:23:35 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0129.hostedemail.com [216.40.44.129]) by kanga.kvack.org (Postfix) with ESMTP id 8DD376B0082 for ; Fri, 3 Dec 2021 14:23:35 -0500 (EST) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 5470C7D3C8 for ; Fri, 3 Dec 2021 19:23:25 +0000 (UTC) X-FDA: 78877456770.21.EFE5F52 Received: from mail-qt1-f169.google.com (mail-qt1-f169.google.com [209.85.160.169]) by imf11.hostedemail.com (Postfix) with ESMTP id C3A6EF0000AF for ; Fri, 3 Dec 2021 19:23:24 +0000 (UTC) Received: by mail-qt1-f169.google.com with SMTP id 8so4379068qtx.5 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=7IWyDMcVs2Zj1oCcG9MRoOx2tB5ziYmK0hzWxzutN6NAVf32jaFKLsicN2v9EGWpgg ldE0C0gqqqlRaBChPBcuI0cCyvBaBQ8FaG0SVNo885z/Lv/Qn2W09YUPO2Go/PSn6rlj W4I3D1as8Qat0D/Jo72SfjUGnO7eXiaUJQWLLX7etSQ3dfBZfPdcvXo1bJ1Ga8sD0sx6 V9wT1hRyVDzwU1XbNqlIOiv8Q7LwX7GK2cOSKemuclKHD4i/bB6vu4/4eBu/s14av0b2 qp2POPCIPzf3joafrG4Vc+q4UexodlIts0PB8bNdBDHEUtdtLeatnUqa9ktrlnH7kuDY TKtA== X-Gm-Message-State: AOAM533SkMzhHAr4aYhMwf/6YwaPBGJACc9MpleO3XGag5JMw/6lVGRo rA6q/f29LpZ5sGIc8OMWZyXi9A== 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 X-Stat-Signature: ckonmms6i4pc5jt5r1njyx94anbuooob Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=eclypsium.com header.s=google header.b=F+bvJUIt; spf=pass (imf11.hostedemail.com: domain of martin.fernandez@eclypsium.com designates 209.85.160.169 as permitted sender) smtp.mailfrom=martin.fernandez@eclypsium.com; dmarc=pass (policy=quarantine) header.from=eclypsium.com X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: C3A6EF0000AF X-HE-Tag: 1638559404-44639 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: 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 };