From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3209358-1525384526-2-8368294483784107121 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-charsets: plain='utf-8' X-Resolved-to: linux@kroah.com X-Delivered-to: linux@kroah.com X-Mail-from: linux-security-module-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=fm2; t= 1525384526; b=TZN8fdLyNY6VkF3iQc4B+VVQTfaV0DMhQFFCZf150jKTd5JMZH nWSZaWYelSkIf+kx3fwgxH9QKKy9UUZwRG8yAdzWbF8PeKSxWLktOUT1CMeldqOQ IcpDD6IvvSJs4bunJnRfOyi/QeCir4KNHEwITpRYZWckoxoTNnrfSab39g77n8fa yIPgoWU+srAR+ZhvOpd88fXd4XTjQs02c7Qra1NBnoifD5/Mb9Z89OVFq14xradR Xo9uPADgfwDhozTkCFezztB/RHvUfZ/0AXRcAfrOI7cPp77ZimdzUmQBkiNTE/yN 7stO03a3m+m82QSm7r8mUT0ku1x7AYb3Qo7A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=subject:to:references:cc:from:message-id :date:mime-version:in-reply-to:content-type :content-transfer-encoding:sender:list-id; s=fm2; t=1525384526; bh=5PTGqyPZh04WT0J22EpmMsZUGMjfleWojJnvlXqkpwY=; b=hXAowDX8P3gD vhdvxJqUel9ocN6fTHfR06u2tfSPKNZ3bRcxYloAxQ/shdxLnqUe4E6l4qi1AGQG XY8iQ97aluNiGFl3mvdnRLmMi5PCo4gR7VA8Aqb/MGIHd5HCwhLRdIoFGt7ZTebW ENSniNiZyTfut46s8z3/ssIHm6wBR4OuQhbAbkyvT5LS+UjcptYZCPaZre4xu/Rn t65XlzYZLJUk+z0oCOV0YdlQ0OZFVeIMvQlMX9Oy8hgJmacz3b/dr32SNzpAMKhO qzy93Clv3ZHvmhUGi60x+6cHXOjJcR48M3BqUUVZLoZNzK06e5kTp8TuGKYM0nVn WNUeZXBj/A== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=intel.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-security-module-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=intel.com header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=intel.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-security-module-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=intel.com header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfCIv8yq2BULxPrryCtyzpfguACTFETdFOdT2USq4uQDJRxN0TMiGtITv0a2vRTJOkLEjqpO9WUJxMckhPGPtyUt5w3OMY+9oR3+f7Z2ot/M755KkJg8U 3WOTVaeOGahnMyWhML3DoQpQL0xTyjJ/QL22/R6W975X8jRBurx2Urm8wKZwZz3MUhcEHVaFONm1RF9J3j7q40BPKfWjDDqriHf5/86JJ6VuFwIvrKM1xiAc LtCO5y9vunUUGuwPN57nQw== X-CM-Analysis: v=2.3 cv=WaUilXpX c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=IkcTkHD0fZMA:10 a=VUJBJC2UJ8kA:10 a=VwQbUJbxAAAA:8 a=6nUXITN49fC6jhMlmTEA:9 a=QEXdDO2ut3YA:10 a=x8gzFH9gYPwA:10 a=AjGcO6oz07-iQ99wixmX:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751108AbeECVzZ (ORCPT ); Thu, 3 May 2018 17:55:25 -0400 Received: from mga03.intel.com ([134.134.136.65]:12701 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750911AbeECVzY (ORCPT ); Thu, 3 May 2018 17:55:24 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,360,1520924400"; d="scan'208";a="48118855" Subject: Re: Correct way to access the physmap? - Was: Re: [PATCH 7/9] Pmalloc Rare Write: modify selected pools To: Igor Stoppa , Matthew Wilcox References: <20180423125458.5338-1-igor.stoppa@huawei.com> <20180423125458.5338-8-igor.stoppa@huawei.com> <20180424115050.GD26636@bombadil.infradead.org> <035f2bba-ebb1-06a0-fb88-3d40f7e484a7@gmail.com> Cc: linux-security-module@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-hardening@lists.openwall.com, Igor Stoppa From: Dave Hansen Openpgp: preference=signencrypt Message-ID: Date: Thu, 3 May 2018 14:55:23 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <035f2bba-ebb1-06a0-fb88-3d40f7e484a7@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: owner-linux-security-module@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On 05/03/2018 02:52 PM, Igor Stoppa wrote: > At the end of the summit, we agreed that I would go through the physmap. Do you mean the kernel linear map? That's just another name for the virtual address that you get back from page_to_virt(): int *j = page_to_virt(vmalloc_to_page(i)); From mboxrd@z Thu Jan 1 00:00:00 1970 From: dave.hansen@intel.com (Dave Hansen) Date: Thu, 3 May 2018 14:55:23 -0700 Subject: Correct way to access the physmap? - Was: Re: [PATCH 7/9] Pmalloc Rare Write: modify selected pools In-Reply-To: <035f2bba-ebb1-06a0-fb88-3d40f7e484a7@gmail.com> References: <20180423125458.5338-1-igor.stoppa@huawei.com> <20180423125458.5338-8-igor.stoppa@huawei.com> <20180424115050.GD26636@bombadil.infradead.org> <035f2bba-ebb1-06a0-fb88-3d40f7e484a7@gmail.com> Message-ID: To: linux-security-module@vger.kernel.org List-Id: linux-security-module.vger.kernel.org On 05/03/2018 02:52 PM, Igor Stoppa wrote: > At the end of the summit, we agreed that I would go through the physmap. Do you mean the kernel linear map? That's just another name for the virtual address that you get back from page_to_virt(): int *j = page_to_virt(vmalloc_to_page(i)); -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html