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=-6.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 5AE8FC433DB for ; Tue, 9 Feb 2021 09:17:04 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 F239B64EBA for ; Tue, 9 Feb 2021 09:17:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F239B64EBA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=merlin.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:Subject: From:References:To:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=KVnLQi62qYN+hdTZPVElc+dXdLJ73rRFWh5o0SeT93s=; b=eqCMjzozRm1VjQWP+Z73100sU Un7McVEyLGejMEH8Dx/bFUOEp5jWquZBNwGDSX/AP4d54zGfAcwC1fVfkheCUOjJEGi+2ngFYKM43 HQ8xI7zyUrVYROU1ZZyvaRj3ktRspLa47nX/nCMwSZo2MH3tq0yMJrlAWEfs1V7yHYUGtNYHwLwqK QcRPqBCBS0ljU3bzI760n9RlK2TyWyLyeSrm9OKLY0QVLtGBLP5PmhHM0O8vIdfC/9lGtKXjXCLv+ bpN3eWycQexT2NxlsJp9feasEQ0wcJWEvoUvWMT5zFY0MuJKcqUbSnbokBjwcfa9YzjKG7y+cBsWG OGB5H+pwA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l9P7Z-0003JF-P8; Tue, 09 Feb 2021 09:15:45 +0000 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l9P7W-0003Gb-MR for linux-arm-kernel@lists.infradead.org; Tue, 09 Feb 2021 09:15:43 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612862138; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=uS7AnbSaMBJT+nB4CnATGQkmbCcT2ALwEDRI78KagxU=; b=DEQ9QfzRbiEiIfDxXiw6oIwNxllL3F82yeiFvH+ASc+u+8CyAhyXu6P7Et/QrPxzAOH0qf Z72DiRiCPSKFOBtLeqo+w+lZGu+jXn8aCrJjwQm/izBytK8VsTMSEwUPBV9tZ6qCzmKYCj k/0PII51pOVtcFIKIp01trDwJmBVTsk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-63-NwZYbqYANyOm-qFvzH4vwA-1; Tue, 09 Feb 2021 04:15:34 -0500 X-MC-Unique: NwZYbqYANyOm-qFvzH4vwA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BBB2C79EC5; Tue, 9 Feb 2021 09:15:29 +0000 (UTC) Received: from [10.36.113.141] (ovpn-113-141.ams2.redhat.com [10.36.113.141]) by smtp.corp.redhat.com (Postfix) with ESMTP id 282C760CEC; Tue, 9 Feb 2021 09:15:18 +0000 (UTC) To: Michal Hocko References: <20210208211326.GV242749@kernel.org> <1F6A73CF-158A-4261-AA6C-1F5C77F4F326@redhat.com> From: David Hildenbrand Organization: Red Hat GmbH Subject: Re: [PATCH v17 00/10] mm: introduce memfd_secret system call to create "secret" memory areas Message-ID: <662b5871-b461-0896-697f-5e903c23d7b9@redhat.com> Date: Tue, 9 Feb 2021 10:15:17 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210209_041542_792743_E347C932 X-CRM114-Status: GOOD ( 29.16 ) 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 , Peter Zijlstra , Catalin Marinas , Dave Hansen , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, "H. Peter Anvin" , Christopher Lameter , Shuah Khan , Thomas Gleixner , Elena Reshetova , linux-arch@vger.kernel.org, Tycho Andersen , linux-nvdimm@lists.01.org, Will Deacon , x86@kernel.org, Matthew Wilcox , Mike Rapoport , Ingo Molnar , Michael Kerrisk , Arnd Bergmann , James Bottomley , Borislav Petkov , Alexander Viro , Andy Lutomirski , Paul Walmsley , "Kirill A. Shutemov" , Dan Williams , linux-arm-kernel@lists.infradead.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Palmer Dabbelt , linux-fsdevel@vger.kernel.org, Shakeel Butt , Andrew Morton , Rick Edgecombe , Roman Gushchin , Mike Rapoport Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMDkuMDIuMjEgMDk6NTksIE1pY2hhbCBIb2NrbyB3cm90ZToKPiBPbiBNb24gMDgtMDItMjEg MjI6Mzg6MDMsIERhdmlkIEhpbGRlbmJyYW5kIHdyb3RlOgo+Pgo+Pj4gQW0gMDguMDIuMjAyMSB1 bSAyMjoxMyBzY2hyaWViIE1pa2UgUmFwb3BvcnQgPHJwcHRAa2VybmVsLm9yZz46Cj4+Pgo+Pj4g 77u/T24gTW9uLCBGZWIgMDgsIDIwMjEgYXQgMTA6Mjc6MThBTSArMDEwMCwgRGF2aWQgSGlsZGVu YnJhbmQgd3JvdGU6Cj4+Pj4gT24gMDguMDIuMjEgMDk6NDksIE1pa2UgUmFwb3BvcnQgd3JvdGU6 Cj4+Pj4KPj4+PiBTb21lIHF1ZXN0aW9ucyAoYW5kIHJlcXVlc3QgdG8gZG9jdW1lbnQgdGhlIGFu c3dlcnMpIGFzIHdlIG5vdyBhbGxvdyB0byBoYXZlCj4+Pj4gdW5tb3ZhYmxlIGFsbG9jYXRpb25z IGFsbCBvdmVyIHRoZSBwbGFjZSBhbmQgSSBkb24ndCBzZWUgYSBzaW5nbGUgY29tbWVudAo+Pj4+ IHJlZ2FyZGluZyB0aGF0IGluIHRoZSBjb3ZlciBsZXR0ZXI6Cj4+Pj4KPj4+PiAxLiBIb3cgd2ls bCB0aGUgaXNzdWUgb2YgcGxlbnR5IG9mIHVubW92YWJsZSBhbGxvY2F0aW9ucyBmb3IgdXNlciBz cGFjZSBiZQo+Pj4+IHRhY2tsZWQgaW4gdGhlIGZ1dHVyZT8KPj4+Pgo+Pj4+IDIuIEhvdyBoYXMg dGhpcyBpc3N1ZSBiZWVuIGRvY3VtZW50ZWQ/IEUuZy4sIGludGVyYWN0aW9uIHdpdGggWk9ORV9N T1ZBQkxFCj4+Pj4gYW5kIENNQSwgYWxsb2NfY29uaWdfcmFuZ2UoKS9hbGxvY19jb250aWdfcGFn ZXM/Lgo+Pj4KPj4+IFNlY3JldG1lbSBzZXRzIHRoZSBtYXBwaW5ncyBnZnAgbWFzayB0byBHRlBf SElHSFVTRVIsIHNvIGl0IGRvZXMgbm90Cj4+PiBhbGxvY2F0ZSBtb3ZhYmxlIHBhZ2VzIGF0IHRo ZSBmaXJzdCBwbGFjZS4KPj4KPj4gVGhhdCBpcyBub3QgdGhlIHBvaW50LiBTZWNyZXRtZW0gY2Fu bm90IGdvIG9uIENNQSAvIFpPTkVfTU9WQUJMRQo+PiBtZW1vcnkgYW5kIGJlaGF2ZXMgbGlrZSBs b25nLXRlcm0gcGlubmluZ3MgaW4gdGhhdCBzZW5zZS4gVGhpcyBpcyBhCj4+IHJlYWwgaXNzdWUg d2hlbiB1c2luZyBhIGxvdCBvZiBzZWN0cmVtZW0uCj4gCj4gQSBsb3Qgb2YgdW5ldmljdGFibGUg bWVtb3J5IGlzIGEgY29uY2VybiByZWdhcmRsZXNzIG9mIENNQS9aT05FX01PVkFCTEUuCj4gQXMg SSd2ZSBzYWlkIGl0IGlzIHF1aXRlIGVhc3kgdG8gbGFuZCBhdCB0aGUgc2ltaWxhciBzaXR1YXRp b24gZXZlbiB3aXRoCj4gdG1wZnMvTUFQX0FOT058TUFQX1NIQVJFRCBvbiBzd2FwbGVzcyBzeXN0 ZW0uIE5laXRoZXIgb2YgdGhlIHR3byBpcwo+IHJlYWxseSB1bmNvbW1vbi4gSXQgd291bGQgYmUg ZXZlbiB3b3JzZSB0aGF0IHRob3NlIHdvdWxkIGJlIGFsbG93ZWQgdG8KPiBjb25zdW1lIGJvdGgg Q01BL1pPTkVfTU9WQUJMRS4KCklJUkMsIHRtcGZzL01BUF9BTk9OfE1BUF9TSEFSRUQgbWVtb3J5 CmEpIElzIG1vdmFibGUsIGNhbiBsYW5kIGluIFpPTkVfTU9WQUJMRS9DTUEKYikgQ2FuIGJlIGxp bWl0ZWQgYnkgc2l6aW5nIHRtcGZzIGFwcHJvcHJpYXRlbHkKCkFGQUlLLCB3aGF0IHlvdSBkZXNj cmliZSBpcyBhIHByb2JsZW0gd2l0aCBtZW1vcnkgb3ZlcmNvbW1pdCwgbm90IHdpdGggCnpvbmUg aW1iYWxhbmNlcyAoYmVsb3cpLiBPciB3aGF0IGFtIEkgbWlzc2luZz8KCj4gCj4gT25lIGhhcyB0 byBiZSB2ZXJ5IGNhcmVmdWwgd2hlbiByZWx5aW5nIG9uIENNQSBvciBtb3ZhYmxlIHpvbmVzLiBU aGlzIGlzCj4gZGVmaW5pdGVseSB3b3J0aCBhIGNvbW1lbnQgaW4gdGhlIGtlcm5lbCBjb21tYW5k IGxpbmUgcGFyYW1ldGVyCj4gZG9jdW1lbnRhdGlvbi4gQnV0IHRoaXMgaXMgbm90IGEgbmV3IHBy b2JsZW0uCgpJIHNlZSB0aGUgZm9sbG93aW5nIHRoaW5nIHdvcnRoIGRvY3VtZW50aW5nOgoKQXNz dW1lIHlvdSBoYXZlIGEgc3lzdGVtIHdpdGggMkdCIG9mIFpPTkVfTk9STUFML1pPTkVfRE1BIGFu ZCA0R0Igb2YgClpPTkVfTU9WQUJMRS9DTUEuCgpBc3N1bWUgeW91IG1ha2UgdXNlIG9mIDEuNUdC IG9mIHNlY3JldG1lbS4gWW91ciBzeXN0ZW0gbWlnaHQgcnVuIGludG8gCk9PTSBhbnkgdGltZSBh bHRob3VnaCB5b3Ugc3RpbGwgaGF2ZSBwbGVudHkgb2YgbWVtb3J5IG9uIFpPTkVfTU9WQVZMRSAK KGFuZCBldmVuIHN3YXAhKSwgc2ltcGx5IGJlY2F1c2UgeW91IGFyZSBtYWtpbmcgZXhjZXNzaXZl IHVzZSBvZiAKdW5tb3ZhYmxlIGFsbG9jYXRpb25zIChmb3IgdXNlciBzcGFjZSEpIGluIGFuIGVu dmlyb25tZW50IHdoZXJlIHlvdSAKc2hvdWxkIG5vdCBtYWtlIGV4Y2Vzc2l2ZSB1c2Ugb2YgdW5t b3ZhYmxlIGFsbG9jYXRpb25zIChlLmcuLCB3aGVyZSAKc2hvdWxkIHBhZ2UgdGFibGVzIGdvPyku CgpUaGUgZXhpc3RpbmcgY29udHJvbHMgKG1sb2NrIGxpbWl0KSBkb24ndCByZWFsbHkgbWF0Y2gg dGhlIGN1cnJlbnQgCnNlbWFudGljcyBvZiB0aGF0IG1lbW9yeS4gSSByZXBlYXQgaXQgb25jZSBh Z2Fpbjogc2VjcmV0bWVtICpjdXJyZW50bHkqIApyZXNlbWJsZXMgbG9uZy10ZXJtIHBpbm5lZCBt ZW1vcnksIG5vdCBtbG9ja2VkIG1lbW9yeS4gVGhpbmdzIHdpbGwgCmNoYW5nZSB3aGVuIGltcGxl bWVudGluZyBtaWdyYXRpb24gc3VwcG9ydCBmb3Igc2VjcmV0bWVtIHBhZ2VzLiBVbnRpbCAKdGhl biwgdGhlIHNlbWFudGljcyBhcmUgZGlmZmVyZW50IGFuZCB0aGlzIHNob3VsZCBiZSBzcGVsbGVk IG91dC4KCkZvciBsb25nLXRlcm0gcGlubmluZ3MgdGhpcyBpcyBraW5kIG9mIG9idmlvdXMsIHN0 aWxsIHdlJ3JlIG5vdyAKZG9jdW1lbnRpbmcgaXQgYmVjYXVzZSBpdCdzIGRhbmdlcm91cyB0byBu b3QgYmUgYXdhcmUgb2YuIFNlY3JldG1lbSAKYmVoYXZlcyBleGFjdGx5IHRoZSBzYW1lIGFuZCBJ IHRoaW5rIHRoaXMgaXMgd29ydGggc3BlbGxpbmcgb3V0OiAKc2VjcmV0bWVtIGhhcyB0aGUgcG90 ZW50aWFsIG9mIGJlaW5nIHVzZWQgbXVjaCBtb3JlIG9mdGVuIHRoYW4gZmFpcmx5IApzcGVjaWFs IHZmaW8vcmRtYS8gLi4uCgpMb29raW5nIGF0IGEgY292ZXIgbGV0dGVyIHRoYXQgZG9lc24ndCBl dmVuIG1lbnRpb24gdGhlIGlzc3VlIG9mIAp1bm1vdmFibGUgYWxsb2NhdGlvbnMgbWFrZXMgbWUg dGhpbmcgdGhhdCB3ZSBhcmUgZWl0aGVyIHRyeWluZyB0byBpZ25vcmUgCnRoZSBwcm9ibGVtIG9y IGFyZSBub3QgYXdhcmUgb2YgdGhlIHByb2JsZW0uCgotLSAKVGhhbmtzLAoKRGF2aWQgLyBkaGls ZGVuYgoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxp bnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFk ZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4 LWFybS1rZXJuZWwK