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 X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D086C43144 for ; Tue, 26 Jun 2018 14:23:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3D6CB26C2A for ; Tue, 26 Jun 2018 14:23:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3D6CB26C2A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965949AbeFZOXE (ORCPT ); Tue, 26 Jun 2018 10:23:04 -0400 Received: from mga17.intel.com ([192.55.52.151]:53115 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965532AbeFZOXA (ORCPT ); Tue, 26 Jun 2018 10:23:00 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2018 07:22:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,274,1526367600"; d="scan'208";a="53025009" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga006.jf.intel.com with ESMTP; 26 Jun 2018 07:22:56 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id 4F4F99C3; Tue, 26 Jun 2018 17:22:52 +0300 (EEST) From: "Kirill A. Shutemov" To: Ingo Molnar , x86@kernel.org, Thomas Gleixner , "H. Peter Anvin" , Tom Lendacky Cc: Dave Hansen , Kai Huang , Jacob Pan , linux-kernel@vger.kernel.org, linux-mm@kvack.org, "Kirill A. Shutemov" Subject: [PATCHv4 17/18] x86/mm: Handle encrypted memory in page_to_virt() and __pa() Date: Tue, 26 Jun 2018 17:22:44 +0300 Message-Id: <20180626142245.82850-18-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180626142245.82850-1-kirill.shutemov@linux.intel.com> References: <20180626142245.82850-1-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Per-KeyID direct mappings require changes into how we find the right virtual address for a page and virt-to-phys address translations. page_to_virt() definition overwrites default macros provided by . We only overwrite the macros if MTKME is enabled compile-time. Signed-off-by: Kirill A. Shutemov --- arch/x86/include/asm/mktme.h | 3 +++ arch/x86/include/asm/page_64.h | 2 +- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/mktme.h b/arch/x86/include/asm/mktme.h index ba83fba4f9b3..dbfbd955da98 100644 --- a/arch/x86/include/asm/mktme.h +++ b/arch/x86/include/asm/mktme.h @@ -29,6 +29,9 @@ void arch_free_page(struct page *page, int order); int sync_direct_mapping(void); +#define page_to_virt(x) \ + (__va(PFN_PHYS(page_to_pfn(x))) + page_keyid(x) * direct_mapping_size) + #else #define mktme_keyid_mask ((phys_addr_t)0) #define mktme_nr_keyids 0 diff --git a/arch/x86/include/asm/page_64.h b/arch/x86/include/asm/page_64.h index 53c32af895ab..ffad496aadad 100644 --- a/arch/x86/include/asm/page_64.h +++ b/arch/x86/include/asm/page_64.h @@ -23,7 +23,7 @@ static inline unsigned long __phys_addr_nodebug(unsigned long x) /* use the carry flag to determine if x was < __START_KERNEL_map */ x = y + ((x > y) ? phys_base : (__START_KERNEL_map - PAGE_OFFSET)); - return x; + return x % direct_mapping_size; } #ifdef CONFIG_DEBUG_VIRTUAL -- 2.18.0