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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 0A6A6C11D04 for ; Thu, 20 Feb 2020 13:05:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE78324670 for ; Thu, 20 Feb 2020 13:05:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728051AbgBTNFj (ORCPT ); Thu, 20 Feb 2020 08:05:39 -0500 Received: from mga03.intel.com ([134.134.136.65]:57895 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727989AbgBTNFj (ORCPT ); Thu, 20 Feb 2020 08:05:39 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Feb 2020 05:05:23 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,464,1574150400"; d="scan'208";a="283399590" Received: from linux.intel.com ([10.54.29.200]) by FMSMGA003.fm.intel.com with ESMTP; 20 Feb 2020 05:05:21 -0800 Received: from [10.125.252.166] (abudanko-mobl.ccr.corp.intel.com [10.125.252.166]) by linux.intel.com (Postfix) with ESMTP id 253CC580472; Thu, 20 Feb 2020 05:05:12 -0800 (PST) Subject: Re: [PATCH v5 01/10] capabilities: introduce CAP_PERFMON to kernel and user space From: Alexey Budankov To: Thomas Gleixner , Stephen Smalley , Serge Hallyn , James Morris Cc: Alexei Starovoitov , Peter Zijlstra , Arnaldo Carvalho de Melo , Ingo Molnar , "jani.nikula@linux.intel.com" , "joonas.lahtinen@linux.intel.com" , "rodrigo.vivi@intel.com" , "benh@kernel.crashing.org" , Paul Mackerras , Michael Ellerman , Will Deacon , Mark Rutland , Robert Richter , Alexei Starovoitov , Jiri Olsa , Andi Kleen , Stephane Eranian , Igor Lubashev , Alexander Shishkin , Namhyung Kim , Song Liu , Lionel Landwerlin , linux-kernel , "linux-security-module@vger.kernel.org" , "selinux@vger.kernel.org" , "intel-gfx@lists.freedesktop.org" , "linux-parisc@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , linux-arm-kernel , "linux-perf-users@vger.kernel.org" , oprofile-list@lists.sf.net, Andy Lutomirski References: <875zgizkyk.fsf@nanos.tec.linutronix.de> <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Organization: Intel Corp. Message-ID: <95aa57e6-4d78-39df-386c-a98734f19777@linux.intel.com> Date: Thu, 20 Feb 2020 16:05:11 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On 07.02.2020 16:39, Alexey Budankov wrote: > > On 07.02.2020 14:38, Thomas Gleixner wrote: >> Alexey Budankov writes: >>> On 22.01.2020 17:25, Alexey Budankov wrote: >>>> On 22.01.2020 17:07, Stephen Smalley wrote: >>>>>> It keeps the implementation simple and readable. The implementation is more >>>>>> performant in the sense of calling the API - one capable() call for CAP_PERFMON >>>>>> privileged process. >>>>>> >>>>>> Yes, it bloats audit log for CAP_SYS_ADMIN privileged and unprivileged processes, >>>>>> but this bloating also advertises and leverages using more secure CAP_PERFMON >>>>>> based approach to use perf_event_open system call. >>>>> >>>>> I can live with that.  We just need to document that when you see >>>>> both a CAP_PERFMON and a CAP_SYS_ADMIN audit message for a process, >>>>> try only allowing CAP_PERFMON first and see if that resolves the >>>>> issue.  We have a similar issue with CAP_DAC_READ_SEARCH versus >>>>> CAP_DAC_OVERRIDE. >>>> >>>> perf security [1] document can be updated, at least, to align and document >>>> this audit logging specifics. >>> >>> And I plan to update the document right after this patch set is accepted. >>> Feel free to let me know of the places in the kernel docs that also >>> require update w.r.t CAP_PERFMON extension. >> >> The documentation update wants be part of the patch set and not planned >> to be done _after_ the patch set is merged. > > Well, accepted. It is going to make patches #11 and beyond. Patches #11 and #12 of v7 [1] contain information on CAP_PERFMON intention and usage. Patch for man-pages [2] extends perf_event_open.2 documentation. Thanks, Alexey --- [1] https://lore.kernel.org/lkml/c8de937a-0b3a-7147-f5ef-69f467e87a13@linux.intel.com/ [2] https://lore.kernel.org/lkml/18d1083d-efe5-f5f8-c531-d142c0e5c1a8@linux.intel.com/ From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexey Budankov Subject: Re: [PATCH v5 01/10] capabilities: introduce CAP_PERFMON to kernel and user space Date: Thu, 20 Feb 2020 16:05:11 +0300 Message-ID: <95aa57e6-4d78-39df-386c-a98734f19777@linux.intel.com> References: <875zgizkyk.fsf@nanos.tec.linutronix.de> <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Thomas Gleixner , Stephen Smalley , Serge Hallyn , James Morris Cc: Mark Rutland , Song Liu , Peter Zijlstra , "benh@kernel.crashing.org" , Will Deacon , Alexei Starovoitov , Paul Mackerras , Jiri Olsa , Alexei Starovoitov , Andi Kleen , Michael Ellerman , Igor Lubashev , Alexander Shishkin , Ingo Molnar , oprofile-list@lists.sf.net, linux-arm-kernel , Robert Richter , "selinux@vger.kernel.org" , "intel-gfx@lists.freedesktop.org" , Arnaldo Carvalho de Melo , Namhyung Kim , Stephane List-Id: linux-perf-users.vger.kernel.org Ck9uIDA3LjAyLjIwMjAgMTY6MzksIEFsZXhleSBCdWRhbmtvdiB3cm90ZToKPiAKPiBPbiAwNy4w Mi4yMDIwIDE0OjM4LCBUaG9tYXMgR2xlaXhuZXIgd3JvdGU6Cj4+IEFsZXhleSBCdWRhbmtvdiA8 YWxleGV5LmJ1ZGFua292QGxpbnV4LmludGVsLmNvbT4gd3JpdGVzOgo+Pj4gT24gMjIuMDEuMjAy MCAxNzoyNSwgQWxleGV5IEJ1ZGFua292IHdyb3RlOgo+Pj4+IE9uIDIyLjAxLjIwMjAgMTc6MDcs IFN0ZXBoZW4gU21hbGxleSB3cm90ZToKPj4+Pj4+IEl0IGtlZXBzIHRoZSBpbXBsZW1lbnRhdGlv biBzaW1wbGUgYW5kIHJlYWRhYmxlLiBUaGUgaW1wbGVtZW50YXRpb24gaXMgbW9yZQo+Pj4+Pj4g cGVyZm9ybWFudCBpbiB0aGUgc2Vuc2Ugb2YgY2FsbGluZyB0aGUgQVBJIC0gb25lIGNhcGFibGUo KSBjYWxsIGZvciBDQVBfUEVSRk1PTgo+Pj4+Pj4gcHJpdmlsZWdlZCBwcm9jZXNzLgo+Pj4+Pj4K Pj4+Pj4+IFllcywgaXQgYmxvYXRzIGF1ZGl0IGxvZyBmb3IgQ0FQX1NZU19BRE1JTiBwcml2aWxl Z2VkIGFuZCB1bnByaXZpbGVnZWQgcHJvY2Vzc2VzLAo+Pj4+Pj4gYnV0IHRoaXMgYmxvYXRpbmcg YWxzbyBhZHZlcnRpc2VzIGFuZCBsZXZlcmFnZXMgdXNpbmcgbW9yZSBzZWN1cmUgQ0FQX1BFUkZN T04KPj4+Pj4+IGJhc2VkIGFwcHJvYWNoIHRvIHVzZSBwZXJmX2V2ZW50X29wZW4gc3lzdGVtIGNh bGwuCj4+Pj4+Cj4+Pj4+IEkgY2FuIGxpdmUgd2l0aCB0aGF0LsKgIFdlIGp1c3QgbmVlZCB0byBk b2N1bWVudCB0aGF0IHdoZW4geW91IHNlZQo+Pj4+PiBib3RoIGEgQ0FQX1BFUkZNT04gYW5kIGEg Q0FQX1NZU19BRE1JTiBhdWRpdCBtZXNzYWdlIGZvciBhIHByb2Nlc3MsCj4+Pj4+IHRyeSBvbmx5 IGFsbG93aW5nIENBUF9QRVJGTU9OIGZpcnN0IGFuZCBzZWUgaWYgdGhhdCByZXNvbHZlcyB0aGUK Pj4+Pj4gaXNzdWUuwqAgV2UgaGF2ZSBhIHNpbWlsYXIgaXNzdWUgd2l0aCBDQVBfREFDX1JFQURf U0VBUkNIIHZlcnN1cwo+Pj4+PiBDQVBfREFDX09WRVJSSURFLgo+Pj4+Cj4+Pj4gcGVyZiBzZWN1 cml0eSBbMV0gZG9jdW1lbnQgY2FuIGJlIHVwZGF0ZWQsIGF0IGxlYXN0LCB0byBhbGlnbiBhbmQg ZG9jdW1lbnQgCj4+Pj4gdGhpcyBhdWRpdCBsb2dnaW5nIHNwZWNpZmljcy4KPj4+Cj4+PiBBbmQg SSBwbGFuIHRvIHVwZGF0ZSB0aGUgZG9jdW1lbnQgcmlnaHQgYWZ0ZXIgdGhpcyBwYXRjaCBzZXQg aXMgYWNjZXB0ZWQuCj4+PiBGZWVsIGZyZWUgdG8gbGV0IG1lIGtub3cgb2YgdGhlIHBsYWNlcyBp biB0aGUga2VybmVsIGRvY3MgdGhhdCBhbHNvCj4+PiByZXF1aXJlIHVwZGF0ZSB3LnIudCBDQVBf UEVSRk1PTiBleHRlbnNpb24uCj4+Cj4+IFRoZSBkb2N1bWVudGF0aW9uIHVwZGF0ZSB3YW50cyBi ZSBwYXJ0IG9mIHRoZSBwYXRjaCBzZXQgYW5kIG5vdCBwbGFubmVkCj4+IHRvIGJlIGRvbmUgX2Fm dGVyXyB0aGUgcGF0Y2ggc2V0IGlzIG1lcmdlZC4KPiAKPiBXZWxsLCBhY2NlcHRlZC4gSXQgaXMg Z29pbmcgdG8gbWFrZSBwYXRjaGVzICMxMSBhbmQgYmV5b25kLgoKUGF0Y2hlcyAjMTEgYW5kICMx MiBvZiB2NyBbMV0gY29udGFpbiBpbmZvcm1hdGlvbiBvbiBDQVBfUEVSRk1PTiBpbnRlbnRpb24g YW5kIHVzYWdlLgpQYXRjaCBmb3IgbWFuLXBhZ2VzIFsyXSBleHRlbmRzIHBlcmZfZXZlbnRfb3Bl bi4yIGRvY3VtZW50YXRpb24uCgpUaGFua3MsCkFsZXhleQoKLS0tClsxXSBodHRwczovL2xvcmUu a2VybmVsLm9yZy9sa21sL2M4ZGU5MzdhLTBiM2EtNzE0Ny1mNWVmLTY5ZjQ2N2U4N2ExM0BsaW51 eC5pbnRlbC5jb20vClsyXSBodHRwczovL2xvcmUua2VybmVsLm9yZy9sa21sLzE4ZDEwODNkLWVm ZTUtZjVmOC1jNTMxLWQxNDJjMGU1YzFhOEBsaW51eC5pbnRlbC5jb20vCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0 CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK 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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 2E383C11D04 for ; Thu, 20 Feb 2020 13:09:53 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DDE4E206ED for ; Thu, 20 Feb 2020 13:09:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DDE4E206ED Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 48NZgf4sv3zDqJS for ; Fri, 21 Feb 2020 00:09:50 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=linux.intel.com (client-ip=134.134.136.100; helo=mga07.intel.com; envelope-from=alexey.budankov@linux.intel.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48NZZh71FXzDqSZ for ; Fri, 21 Feb 2020 00:05:31 +1100 (AEDT) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Feb 2020 05:05:23 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,464,1574150400"; d="scan'208";a="283399590" Received: from linux.intel.com ([10.54.29.200]) by FMSMGA003.fm.intel.com with ESMTP; 20 Feb 2020 05:05:21 -0800 Received: from [10.125.252.166] (abudanko-mobl.ccr.corp.intel.com [10.125.252.166]) by linux.intel.com (Postfix) with ESMTP id 253CC580472; Thu, 20 Feb 2020 05:05:12 -0800 (PST) Subject: Re: [PATCH v5 01/10] capabilities: introduce CAP_PERFMON to kernel and user space From: Alexey Budankov To: Thomas Gleixner , Stephen Smalley , Serge Hallyn , James Morris References: <875zgizkyk.fsf@nanos.tec.linutronix.de> <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Organization: Intel Corp. Message-ID: <95aa57e6-4d78-39df-386c-a98734f19777@linux.intel.com> Date: Thu, 20 Feb 2020 16:05:11 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Song Liu , Peter Zijlstra , "joonas.lahtinen@linux.intel.com" , Will Deacon , Alexei Starovoitov , Lionel Landwerlin , Paul Mackerras , Jiri Olsa , Alexei Starovoitov , Andi Kleen , Igor Lubashev , Alexander Shishkin , Ingo Molnar , oprofile-list@lists.sf.net, linux-arm-kernel , Robert Richter , "selinux@vger.kernel.org" , "intel-gfx@lists.freedesktop.org" , "jani.nikula@linux.intel.com" , Arnaldo Carvalho de Melo , "rodrigo.vivi@intel.com" , Namhyung Kim , Stephane Eranian , "linux-parisc@vger.kernel.org" , linux-kernel , Andy Lutomirski , "linux-perf-users@vger.kernel.org" , "linux-security-module@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 07.02.2020 16:39, Alexey Budankov wrote: > > On 07.02.2020 14:38, Thomas Gleixner wrote: >> Alexey Budankov writes: >>> On 22.01.2020 17:25, Alexey Budankov wrote: >>>> On 22.01.2020 17:07, Stephen Smalley wrote: >>>>>> It keeps the implementation simple and readable. The implementation is more >>>>>> performant in the sense of calling the API - one capable() call for CAP_PERFMON >>>>>> privileged process. >>>>>> >>>>>> Yes, it bloats audit log for CAP_SYS_ADMIN privileged and unprivileged processes, >>>>>> but this bloating also advertises and leverages using more secure CAP_PERFMON >>>>>> based approach to use perf_event_open system call. >>>>> >>>>> I can live with that.  We just need to document that when you see >>>>> both a CAP_PERFMON and a CAP_SYS_ADMIN audit message for a process, >>>>> try only allowing CAP_PERFMON first and see if that resolves the >>>>> issue.  We have a similar issue with CAP_DAC_READ_SEARCH versus >>>>> CAP_DAC_OVERRIDE. >>>> >>>> perf security [1] document can be updated, at least, to align and document >>>> this audit logging specifics. >>> >>> And I plan to update the document right after this patch set is accepted. >>> Feel free to let me know of the places in the kernel docs that also >>> require update w.r.t CAP_PERFMON extension. >> >> The documentation update wants be part of the patch set and not planned >> to be done _after_ the patch set is merged. > > Well, accepted. It is going to make patches #11 and beyond. Patches #11 and #12 of v7 [1] contain information on CAP_PERFMON intention and usage. Patch for man-pages [2] extends perf_event_open.2 documentation. Thanks, Alexey --- [1] https://lore.kernel.org/lkml/c8de937a-0b3a-7147-f5ef-69f467e87a13@linux.intel.com/ [2] https://lore.kernel.org/lkml/18d1083d-efe5-f5f8-c531-d142c0e5c1a8@linux.intel.com/ 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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 53AB8C11D05 for ; Thu, 20 Feb 2020 13:07:29 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2137824650 for ; Thu, 20 Feb 2020 13:07:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="OW11/Gax" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2137824650 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-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:References:To:From:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=MUhrzEzZEVbPCptPXHtJ1peirwwb2St1aiZ6jrbhd1w=; b=OW11/GaxUpUJ1A 8yxcS/mSpEUaHQyaCWKvlMe1bymoqW9flIJbMDIwwzsBpwDXYJtAX0vN6QbBjjnJgY7dPCf0qwYfU BnLfHXBzQQPUqD4q33emjcp2kWWt2k0l9wilRu1yvXI3n7ZsIxXxmL9Jj9ZbqbxoPFLZAu3Oygagx m+L+ZudMmJC/bQO2gdOIGVaiEMhA+NOFnbPYRHDfWG6ogOTl9AvV9LSifY598pNGY27JikUE3S/yi gJtdZqmFU51cVatoGJDKpRDamfdfsn48IHZ3tz8mm9lmouqFSXAyL+LtW06c1ShDsTNqfSaicPT0j PCwh/aI9I4Ib/VNux+aA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4lY8-0005Ek-FY; Thu, 20 Feb 2020 13:07:28 +0000 Received: from mga02.intel.com ([134.134.136.20]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4lY5-0004sa-Bi for linux-arm-kernel@lists.infradead.org; Thu, 20 Feb 2020 13:07:26 +0000 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Feb 2020 05:05:23 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,464,1574150400"; d="scan'208";a="283399590" Received: from linux.intel.com ([10.54.29.200]) by FMSMGA003.fm.intel.com with ESMTP; 20 Feb 2020 05:05:21 -0800 Received: from [10.125.252.166] (abudanko-mobl.ccr.corp.intel.com [10.125.252.166]) by linux.intel.com (Postfix) with ESMTP id 253CC580472; Thu, 20 Feb 2020 05:05:12 -0800 (PST) Subject: Re: [PATCH v5 01/10] capabilities: introduce CAP_PERFMON to kernel and user space From: Alexey Budankov To: Thomas Gleixner , Stephen Smalley , Serge Hallyn , James Morris References: <875zgizkyk.fsf@nanos.tec.linutronix.de> <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Organization: Intel Corp. Message-ID: <95aa57e6-4d78-39df-386c-a98734f19777@linux.intel.com> Date: Thu, 20 Feb 2020 16:05:11 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200220_050725_449971_74D3AA7F X-CRM114-Status: GOOD ( 13.72 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Song Liu , Peter Zijlstra , "benh@kernel.crashing.org" , "joonas.lahtinen@linux.intel.com" , Will Deacon , Alexei Starovoitov , Lionel Landwerlin , Paul Mackerras , Jiri Olsa , Alexei Starovoitov , Andi Kleen , Michael Ellerman , Igor Lubashev , Alexander Shishkin , Ingo Molnar , oprofile-list@lists.sf.net, linux-arm-kernel , Robert Richter , "selinux@vger.kernel.org" , "intel-gfx@lists.freedesktop.org" , "jani.nikula@linux.intel.com" , Arnaldo Carvalho de Melo , "rodrigo.vivi@intel.com" , Namhyung Kim , Stephane Eranian , "linux-parisc@vger.kernel.org" , linux-kernel , Andy Lutomirski , "linux-perf-users@vger.kernel.org" , "linux-security-module@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Ck9uIDA3LjAyLjIwMjAgMTY6MzksIEFsZXhleSBCdWRhbmtvdiB3cm90ZToKPiAKPiBPbiAwNy4w Mi4yMDIwIDE0OjM4LCBUaG9tYXMgR2xlaXhuZXIgd3JvdGU6Cj4+IEFsZXhleSBCdWRhbmtvdiA8 YWxleGV5LmJ1ZGFua292QGxpbnV4LmludGVsLmNvbT4gd3JpdGVzOgo+Pj4gT24gMjIuMDEuMjAy MCAxNzoyNSwgQWxleGV5IEJ1ZGFua292IHdyb3RlOgo+Pj4+IE9uIDIyLjAxLjIwMjAgMTc6MDcs IFN0ZXBoZW4gU21hbGxleSB3cm90ZToKPj4+Pj4+IEl0IGtlZXBzIHRoZSBpbXBsZW1lbnRhdGlv biBzaW1wbGUgYW5kIHJlYWRhYmxlLiBUaGUgaW1wbGVtZW50YXRpb24gaXMgbW9yZQo+Pj4+Pj4g cGVyZm9ybWFudCBpbiB0aGUgc2Vuc2Ugb2YgY2FsbGluZyB0aGUgQVBJIC0gb25lIGNhcGFibGUo KSBjYWxsIGZvciBDQVBfUEVSRk1PTgo+Pj4+Pj4gcHJpdmlsZWdlZCBwcm9jZXNzLgo+Pj4+Pj4K Pj4+Pj4+IFllcywgaXQgYmxvYXRzIGF1ZGl0IGxvZyBmb3IgQ0FQX1NZU19BRE1JTiBwcml2aWxl Z2VkIGFuZCB1bnByaXZpbGVnZWQgcHJvY2Vzc2VzLAo+Pj4+Pj4gYnV0IHRoaXMgYmxvYXRpbmcg YWxzbyBhZHZlcnRpc2VzIGFuZCBsZXZlcmFnZXMgdXNpbmcgbW9yZSBzZWN1cmUgQ0FQX1BFUkZN T04KPj4+Pj4+IGJhc2VkIGFwcHJvYWNoIHRvIHVzZSBwZXJmX2V2ZW50X29wZW4gc3lzdGVtIGNh bGwuCj4+Pj4+Cj4+Pj4+IEkgY2FuIGxpdmUgd2l0aCB0aGF0LsKgIFdlIGp1c3QgbmVlZCB0byBk b2N1bWVudCB0aGF0IHdoZW4geW91IHNlZQo+Pj4+PiBib3RoIGEgQ0FQX1BFUkZNT04gYW5kIGEg Q0FQX1NZU19BRE1JTiBhdWRpdCBtZXNzYWdlIGZvciBhIHByb2Nlc3MsCj4+Pj4+IHRyeSBvbmx5 IGFsbG93aW5nIENBUF9QRVJGTU9OIGZpcnN0IGFuZCBzZWUgaWYgdGhhdCByZXNvbHZlcyB0aGUK Pj4+Pj4gaXNzdWUuwqAgV2UgaGF2ZSBhIHNpbWlsYXIgaXNzdWUgd2l0aCBDQVBfREFDX1JFQURf U0VBUkNIIHZlcnN1cwo+Pj4+PiBDQVBfREFDX09WRVJSSURFLgo+Pj4+Cj4+Pj4gcGVyZiBzZWN1 cml0eSBbMV0gZG9jdW1lbnQgY2FuIGJlIHVwZGF0ZWQsIGF0IGxlYXN0LCB0byBhbGlnbiBhbmQg ZG9jdW1lbnQgCj4+Pj4gdGhpcyBhdWRpdCBsb2dnaW5nIHNwZWNpZmljcy4KPj4+Cj4+PiBBbmQg SSBwbGFuIHRvIHVwZGF0ZSB0aGUgZG9jdW1lbnQgcmlnaHQgYWZ0ZXIgdGhpcyBwYXRjaCBzZXQg aXMgYWNjZXB0ZWQuCj4+PiBGZWVsIGZyZWUgdG8gbGV0IG1lIGtub3cgb2YgdGhlIHBsYWNlcyBp biB0aGUga2VybmVsIGRvY3MgdGhhdCBhbHNvCj4+PiByZXF1aXJlIHVwZGF0ZSB3LnIudCBDQVBf UEVSRk1PTiBleHRlbnNpb24uCj4+Cj4+IFRoZSBkb2N1bWVudGF0aW9uIHVwZGF0ZSB3YW50cyBi ZSBwYXJ0IG9mIHRoZSBwYXRjaCBzZXQgYW5kIG5vdCBwbGFubmVkCj4+IHRvIGJlIGRvbmUgX2Fm dGVyXyB0aGUgcGF0Y2ggc2V0IGlzIG1lcmdlZC4KPiAKPiBXZWxsLCBhY2NlcHRlZC4gSXQgaXMg Z29pbmcgdG8gbWFrZSBwYXRjaGVzICMxMSBhbmQgYmV5b25kLgoKUGF0Y2hlcyAjMTEgYW5kICMx MiBvZiB2NyBbMV0gY29udGFpbiBpbmZvcm1hdGlvbiBvbiBDQVBfUEVSRk1PTiBpbnRlbnRpb24g YW5kIHVzYWdlLgpQYXRjaCBmb3IgbWFuLXBhZ2VzIFsyXSBleHRlbmRzIHBlcmZfZXZlbnRfb3Bl bi4yIGRvY3VtZW50YXRpb24uCgpUaGFua3MsCkFsZXhleQoKLS0tClsxXSBodHRwczovL2xvcmUu a2VybmVsLm9yZy9sa21sL2M4ZGU5MzdhLTBiM2EtNzE0Ny1mNWVmLTY5ZjQ2N2U4N2ExM0BsaW51 eC5pbnRlbC5jb20vClsyXSBodHRwczovL2xvcmUua2VybmVsLm9yZy9sa21sLzE4ZDEwODNkLWVm ZTUtZjVmOC1jNTMxLWQxNDJjMGU1YzFhOEBsaW51eC5pbnRlbC5jb20vCgoKX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWls aW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0 cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo= 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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 AE63EC11D04 for ; 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20 Feb 2020 05:05:23 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,464,1574150400"; d="scan'208";a="283399590" Received: from linux.intel.com ([10.54.29.200]) by FMSMGA003.fm.intel.com with ESMTP; 20 Feb 2020 05:05:21 -0800 Received: from [10.125.252.166] (abudanko-mobl.ccr.corp.intel.com [10.125.252.166]) by linux.intel.com (Postfix) with ESMTP id 253CC580472; Thu, 20 Feb 2020 05:05:12 -0800 (PST) From: Alexey Budankov To: Thomas Gleixner , Stephen Smalley , Serge Hallyn , James Morris References: <875zgizkyk.fsf@nanos.tec.linutronix.de> <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Organization: Intel Corp. Message-ID: <95aa57e6-4d78-39df-386c-a98734f19777@linux.intel.com> Date: Thu, 20 Feb 2020 16:05:11 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <7d6f4210-423f-e454-3910-9f8e17dff1aa@linux.intel.com> Content-Language: en-US Subject: Re: [Intel-gfx] [PATCH v5 01/10] capabilities: introduce CAP_PERFMON to kernel and user space X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Song Liu , Peter Zijlstra , "benh@kernel.crashing.org" , Will Deacon , Alexei Starovoitov , Paul Mackerras , Jiri Olsa , Alexei Starovoitov , Andi Kleen , Michael Ellerman , Igor Lubashev , Alexander Shishkin , Ingo Molnar , oprofile-list@lists.sf.net, linux-arm-kernel , Robert Richter , "selinux@vger.kernel.org" , "intel-gfx@lists.freedesktop.org" , Arnaldo Carvalho de Melo , Namhyung Kim , Stephane Eranian , "linux-parisc@vger.kernel.org" , linux-kernel , Andy Lutomirski , "linux-perf-users@vger.kernel.org" , "linux-security-module@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Ck9uIDA3LjAyLjIwMjAgMTY6MzksIEFsZXhleSBCdWRhbmtvdiB3cm90ZToKPiAKPiBPbiAwNy4w Mi4yMDIwIDE0OjM4LCBUaG9tYXMgR2xlaXhuZXIgd3JvdGU6Cj4+IEFsZXhleSBCdWRhbmtvdiA8 YWxleGV5LmJ1ZGFua292QGxpbnV4LmludGVsLmNvbT4gd3JpdGVzOgo+Pj4gT24gMjIuMDEuMjAy MCAxNzoyNSwgQWxleGV5IEJ1ZGFua292IHdyb3RlOgo+Pj4+IE9uIDIyLjAxLjIwMjAgMTc6MDcs IFN0ZXBoZW4gU21hbGxleSB3cm90ZToKPj4+Pj4+IEl0IGtlZXBzIHRoZSBpbXBsZW1lbnRhdGlv biBzaW1wbGUgYW5kIHJlYWRhYmxlLiBUaGUgaW1wbGVtZW50YXRpb24gaXMgbW9yZQo+Pj4+Pj4g cGVyZm9ybWFudCBpbiB0aGUgc2Vuc2Ugb2YgY2FsbGluZyB0aGUgQVBJIC0gb25lIGNhcGFibGUo KSBjYWxsIGZvciBDQVBfUEVSRk1PTgo+Pj4+Pj4gcHJpdmlsZWdlZCBwcm9jZXNzLgo+Pj4+Pj4K Pj4+Pj4+IFllcywgaXQgYmxvYXRzIGF1ZGl0IGxvZyBmb3IgQ0FQX1NZU19BRE1JTiBwcml2aWxl Z2VkIGFuZCB1bnByaXZpbGVnZWQgcHJvY2Vzc2VzLAo+Pj4+Pj4gYnV0IHRoaXMgYmxvYXRpbmcg YWxzbyBhZHZlcnRpc2VzIGFuZCBsZXZlcmFnZXMgdXNpbmcgbW9yZSBzZWN1cmUgQ0FQX1BFUkZN T04KPj4+Pj4+IGJhc2VkIGFwcHJvYWNoIHRvIHVzZSBwZXJmX2V2ZW50X29wZW4gc3lzdGVtIGNh bGwuCj4+Pj4+Cj4+Pj4+IEkgY2FuIGxpdmUgd2l0aCB0aGF0LsKgIFdlIGp1c3QgbmVlZCB0byBk b2N1bWVudCB0aGF0IHdoZW4geW91IHNlZQo+Pj4+PiBib3RoIGEgQ0FQX1BFUkZNT04gYW5kIGEg Q0FQX1NZU19BRE1JTiBhdWRpdCBtZXNzYWdlIGZvciBhIHByb2Nlc3MsCj4+Pj4+IHRyeSBvbmx5 IGFsbG93aW5nIENBUF9QRVJGTU9OIGZpcnN0IGFuZCBzZWUgaWYgdGhhdCByZXNvbHZlcyB0aGUK Pj4+Pj4gaXNzdWUuwqAgV2UgaGF2ZSBhIHNpbWlsYXIgaXNzdWUgd2l0aCBDQVBfREFDX1JFQURf U0VBUkNIIHZlcnN1cwo+Pj4+PiBDQVBfREFDX09WRVJSSURFLgo+Pj4+Cj4+Pj4gcGVyZiBzZWN1 cml0eSBbMV0gZG9jdW1lbnQgY2FuIGJlIHVwZGF0ZWQsIGF0IGxlYXN0LCB0byBhbGlnbiBhbmQg ZG9jdW1lbnQgCj4+Pj4gdGhpcyBhdWRpdCBsb2dnaW5nIHNwZWNpZmljcy4KPj4+Cj4+PiBBbmQg SSBwbGFuIHRvIHVwZGF0ZSB0aGUgZG9jdW1lbnQgcmlnaHQgYWZ0ZXIgdGhpcyBwYXRjaCBzZXQg aXMgYWNjZXB0ZWQuCj4+PiBGZWVsIGZyZWUgdG8gbGV0IG1lIGtub3cgb2YgdGhlIHBsYWNlcyBp biB0aGUga2VybmVsIGRvY3MgdGhhdCBhbHNvCj4+PiByZXF1aXJlIHVwZGF0ZSB3LnIudCBDQVBf UEVSRk1PTiBleHRlbnNpb24uCj4+Cj4+IFRoZSBkb2N1bWVudGF0aW9uIHVwZGF0ZSB3YW50cyBi ZSBwYXJ0IG9mIHRoZSBwYXRjaCBzZXQgYW5kIG5vdCBwbGFubmVkCj4+IHRvIGJlIGRvbmUgX2Fm dGVyXyB0aGUgcGF0Y2ggc2V0IGlzIG1lcmdlZC4KPiAKPiBXZWxsLCBhY2NlcHRlZC4gSXQgaXMg Z29pbmcgdG8gbWFrZSBwYXRjaGVzICMxMSBhbmQgYmV5b25kLgoKUGF0Y2hlcyAjMTEgYW5kICMx MiBvZiB2NyBbMV0gY29udGFpbiBpbmZvcm1hdGlvbiBvbiBDQVBfUEVSRk1PTiBpbnRlbnRpb24g YW5kIHVzYWdlLgpQYXRjaCBmb3IgbWFuLXBhZ2VzIFsyXSBleHRlbmRzIHBlcmZfZXZlbnRfb3Bl bi4yIGRvY3VtZW50YXRpb24uCgpUaGFua3MsCkFsZXhleQoKLS0tClsxXSBodHRwczovL2xvcmUu a2VybmVsLm9yZy9sa21sL2M4ZGU5MzdhLTBiM2EtNzE0Ny1mNWVmLTY5ZjQ2N2U4N2ExM0BsaW51 eC5pbnRlbC5jb20vClsyXSBodHRwczovL2xvcmUua2VybmVsLm9yZy9sa21sLzE4ZDEwODNkLWVm ZTUtZjVmOC1jNTMxLWQxNDJjMGU1YzFhOEBsaW51eC5pbnRlbC5jb20vCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0 CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK