Message ID | 20190508144422.13171-7-kirill.shutemov@linux.intel.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <owner-linux-mm@kvack.org> Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9E737924 for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 8 May 2019 14:45:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8CE7C283B0 for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 8 May 2019 14:45:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8134028437; Wed, 8 May 2019 14:45:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6A45E283B0 for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 8 May 2019 14:45:08 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 65C726B026D; Wed, 8 May 2019 10:44:42 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 525946B0271; Wed, 8 May 2019 10:44:42 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E94526B026D; Wed, 8 May 2019 10:44:41 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from mail-pg1-f197.google.com (mail-pg1-f197.google.com [209.85.215.197]) by kanga.kvack.org (Postfix) with ESMTP id 89D5D6B0269 for <linux-mm@kvack.org>; Wed, 8 May 2019 10:44:41 -0400 (EDT) Received: by mail-pg1-f197.google.com with SMTP id z7so12815854pgc.1 for <linux-mm@kvack.org>; Wed, 08 May 2019 07:44:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:from:to:cc :subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=2a86XFpPB1yBdakeeQxjTF554iXKWdzVOx15RcYIa0M=; b=XbRDuLLWs4WbcU39gTME1U7a9HTb6mbooqx89lZZ88AcO58NWuNw3eusT7s1woYove kDyOduQ5Ce8Q+MIs2SuMMtTYzu26snipV0bPh6x3ZocY9yuYRxFMAtpVdewGr3exz/jS TxG7COk6D7GiNQMRMzGtMc65d92HtgzbkrKLg30UqjXIwa4EU4lo7+12YpjxlxsX0DtZ CCtEZNdUYr0fOlDJB3YTwTNbyOxGWEjSdAS3TF6jI6bP/rWzrYiIgp1jil0h4qetXhcG t/ER7cOJoxredR50QwVdS9h5mG591ApUF62qRYghFd8W/Pmcbr2e48Qm2bndKNNrKOkI rz+A== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of kirill.shutemov@linux.intel.com designates 192.55.52.136 as permitted sender) smtp.mailfrom=kirill.shutemov@linux.intel.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Gm-Message-State: APjAAAUYwhffc1Xx+Bh1t7pJuhNFoXSoMR3td90FHUbyB/18k519v9r2 A5PCXMwP0eLWxuaOrxLz80heDhoB900azzOyykUEcODc4oL+Q1iHnIuduU5m0vrm+8hDCkI78Ud mAVM2aO4gOWcKiu854O3WrQfmem3URssH5A2L1UpZJaPiQ+h5VGfVFKhyfaPkroaL9Q== X-Received: by 2002:a63:dd58:: with SMTP id g24mr46966768pgj.161.1557326681177; Wed, 08 May 2019 07:44:41 -0700 (PDT) X-Google-Smtp-Source: APXvYqwpMsNC2ASFzuS87qNgE9rkH8OiBdn7WrIAnt+MlUnMVC3kiCBaWilS1JnMNpPV6vLMXrif X-Received: by 2002:a63:dd58:: with SMTP id g24mr46966607pgj.161.1557326679725; Wed, 08 May 2019 07:44:39 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1557326679; cv=none; d=google.com; s=arc-20160816; b=uxP/fZMKN8NGbUwsmyT2Jz2MJJ33Oqgdom2ixN7eqWJJesHL3A0K1AuGJi0wA1jUdp +W4YcWV9URC6g/AX/UxDOdsIQVZZuP4Cdh+xX8WtT1Su/PKiN5aCXXfi0SDigKHp3QIh 4pEM+NI2YQcAh7o2lFaGxpErxzslYzHdwYepAMRTOueOcH9slNSwR2o6YGkyUsEv14Hh LlSemXEtAnt3CIK4mnuSnmZd5k5YhL+u5g7zvpzIRIv7uKFPn/Tzs6IO66rfDbnNCTfS 30DD3RacQ/WXVskeJ8OV1BxD2Wo1PNmkl8BZQCn+uSDYEJck2wsTjLDS3vubyVrYs6i+ YdpQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from; bh=2a86XFpPB1yBdakeeQxjTF554iXKWdzVOx15RcYIa0M=; b=aNfYTo97ZOdTosLyp6XTG92Q6vcBQaDV4AYcCeDLLLtNUOXsblTgrCTybVGu/FxxD/ Jww5zfe9y/Ptk173lGQBGeT6sVMAYyXp9f6wRzaradJedT15H5fUPRCgESP+CGctmk7j OuvNu3UPMKYYi6+SRasH1I7SwnsHhoMkUb8TEMUsaxWX+SwgTpBoLU1IkYs5YkkHYKHU O9EjWL0JMcT4dA4rTrKB+D9ouilp8uv4ATZCn3n7MYfrVsIoCknjQ7HIvd26NAzZM3+u Nefw4GEwSaovey6encyJ02d/QtvK8kYl7d6mKSst6b7y4tgjI7gdXQ/gQPU7kYccf/vF aeAQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of kirill.shutemov@linux.intel.com designates 192.55.52.136 as permitted sender) smtp.mailfrom=kirill.shutemov@linux.intel.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from mga12.intel.com (mga12.intel.com. [192.55.52.136]) by mx.google.com with ESMTPS id s184si23372828pfs.275.2019.05.08.07.44.39 for <linux-mm@kvack.org> (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 08 May 2019 07:44:39 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of kirill.shutemov@linux.intel.com designates 192.55.52.136 as permitted sender) client-ip=192.55.52.136; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of kirill.shutemov@linux.intel.com designates 192.55.52.136 as permitted sender) smtp.mailfrom=kirill.shutemov@linux.intel.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 May 2019 07:44:39 -0700 X-ExtLoop1: 1 Received: from black.fi.intel.com ([10.237.72.28]) by orsmga006.jf.intel.com with ESMTP; 08 May 2019 07:44:34 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id DC7154AB; Wed, 8 May 2019 17:44:28 +0300 (EEST) From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> To: Andrew Morton <akpm@linux-foundation.org>, x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>, Peter Zijlstra <peterz@infradead.org>, Andy Lutomirski <luto@amacapital.net>, David Howells <dhowells@redhat.com> Cc: Kees Cook <keescook@chromium.org>, Dave Hansen <dave.hansen@intel.com>, Kai Huang <kai.huang@linux.intel.com>, Jacob Pan <jacob.jun.pan@linux.intel.com>, Alison Schofield <alison.schofield@intel.com>, linux-mm@kvack.org, kvm@vger.kernel.org, keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Subject: [PATCH, RFC 06/62] mm/khugepaged: Handle encrypted pages Date: Wed, 8 May 2019 17:43:26 +0300 Message-Id: <20190508144422.13171-7-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190508144422.13171-1-kirill.shutemov@linux.intel.com> References: <20190508144422.13171-1-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: <linux-mm.kvack.org> X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
Intel MKTME enabling
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expand
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diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 449044378782..96326a7e9d61 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1055,6 +1055,16 @@ static void collapse_huge_page(struct mm_struct *mm, */ anon_vma_unlock_write(vma->anon_vma); + /* + * At this point new_page is allocated as non-encrypted. + * If VMA's KeyID is non-zero, we need to prepare it to be encrypted + * before coping data. + */ + if (vma_keyid(vma)) { + prep_encrypted_page(new_page, HPAGE_PMD_ORDER, + vma_keyid(vma), false); + } + __collapse_huge_page_copy(pte, new_page, vma, address, pte_ptl); pte_unmap(pte); __SetPageUptodate(new_page);
For !NUMA khugepaged allocates page in advance, before we found a VMA for collapse. We don't yet know which KeyID to use for the allocation. The page is allocated with KeyID-0. Once we know that the VMA is suitable for collapsing, we prepare the page for KeyID we need, based on vma_keyid(). Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- mm/khugepaged.c | 10 ++++++++++ 1 file changed, 10 insertions(+)