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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0CB82C00140 for ; Mon, 8 Aug 2022 23:25:36 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 575F36B0071; Mon, 8 Aug 2022 19:25:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5247F6B0072; Mon, 8 Aug 2022 19:25:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3EC648E0001; Mon, 8 Aug 2022 19:25:36 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 303256B0071 for ; Mon, 8 Aug 2022 19:25:36 -0400 (EDT) Received: from smtpin18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id C5DE5A0223 for ; Mon, 8 Aug 2022 23:25:35 +0000 (UTC) X-FDA: 79778009430.18.E2A9BA1 Received: from mail-yb1-f171.google.com (mail-yb1-f171.google.com [209.85.219.171]) by imf06.hostedemail.com (Postfix) with ESMTP id 7332118014A for ; Mon, 8 Aug 2022 23:25:35 +0000 (UTC) Received: by mail-yb1-f171.google.com with SMTP id z5so15999094yba.3 for ; Mon, 08 Aug 2022 16:25:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc; bh=73cKPFgN9gZ8ltMONiXdX091+tMrsz21e0W09IrrYVM=; b=XD4epq/wDO2pmaef1oiInC2dvEJIqvjq3q43Jfyj+ci5MUe0R+m7gQ5gr1x+XrMC76 LwLhtdXIbgRaVYj9MQHPhkljoWaVUbOD+Rn2R/6VQJfsCEUnZFnf0jVXFjOKLFdW6lBI AQd3NhDC5HNC3/vyl8bHZJAkJILyum23NniPcQLdokRSRh3BOH9Pvf+6pzNo9iHp97GO k+JFH6u4VVeMcZD5etwHx3zffyFTqC6FwhBiOzN9Qi+PU0a55A/i9Qsq66IR5/bRPQl6 Wo8EHYyvtyS5q4HqsP0RoQyycONWLoK9J3yYPmOqKiFDyUUXf5a88zIoeXUvyeGRrLXP U/6w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc; bh=73cKPFgN9gZ8ltMONiXdX091+tMrsz21e0W09IrrYVM=; b=Jqgb1nV3Lpy27rbHmYhF2wIwSwQzDo4zfdWT2VP9+QODLy+A4eXTdyUrmCeQxy+3oj ccND/QfwIei2CDirIYOv0dN8S9te2qJGnbr1X6z8PD64Z1NxwXeSbUCwt1VXZ3047Zkl Ep1ZH1xDWLDFWQvCoXmqR/1xFRJxhE9WPHyZqvNUH3Me+UzEms9na/kBw6N1j1dDJtRf vhMlYi1jMS5ripDGeHmbpjo7ql/cBUxXrrgwQAeztf4h/Qsn7yM/QrxD34MNJ4Vzt9MJ DmmviuRFH1lPDI9CPHEdovJ37+P3Thv4JcFEb4r1t8y2A5/V8f9aMn7IaLI6XT5csu9n HxuA== X-Gm-Message-State: ACgBeo2X3NoxJ6JlOlMxLyv4hrhIEe65mZ1RRxWl/SJnfjsb3r2bepBd zxUAGirYVuZj0t3JP1CEMiDLr9R53XeMDYuIgR675w== X-Google-Smtp-Source: AA6agR7NkhA/E2JJDWORK66aLcG/g1ZA5bYxFqc7io395Oy9dAKo9LEzL/8YuEkKlHfrKtLYRxQ/RoMYCYQoZ3yVrLc= X-Received: by 2002:a05:6902:1021:b0:676:ed79:5733 with SMTP id x1-20020a056902102100b00676ed795733mr18366577ybt.509.1660001134604; Mon, 08 Aug 2022 16:25:34 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Dionna Amalie Glaze Date: Mon, 8 Aug 2022 16:25:23 -0700 Message-ID: Subject: Re: [PATCH Part2 v6 17/49] crypto: ccp: Add the SNP_{SET,GET}_EXT_CONFIG command To: Tom Lendacky Cc: Jarkko Sakkinen , Ashish Kalra , "the arch/x86 maintainers" , LKML , "open list:X86 KVM CPUs" , linux-coco@lists.linux.dev, Linux Memory Management List , linux-crypto@vger.kernel.org, Thomas Gleixner , Ingo Molnar , Joerg Roedel , hpa@zytor.com, Ard Biesheuvel , Paolo Bonzini , Sean Christopherson , vkuznets@redhat.com, Jim Mattson , Andy Lutomirski , dave.hansen@linux.intel.com, slp@redhat.com, Peter Gonda , Peter Zijlstra , srinivas.pandruvada@linux.intel.com, David Rientjes , dovmurik@linux.ibm.com, tobin@ibm.com, Borislav Petkov , "Roth, Michael" , Vlastimil Babka , "Kirill A. Shutemov" , Andi Kleen , tony.luck@intel.com, Marc Orr , Kuppuswamy Sathyanarayanan , Alper Gun , dgilbert@redhat.com Content-Type: text/plain; charset="UTF-8" ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1660001135; a=rsa-sha256; cv=none; b=PUITkXIW7Ibi5+WtCFt0pPONs6SZbTcKcgBQ78gSdLoOYKbEp43+1NOq5KEiehdXd8s//F 2qfvbyQyL7liR2lbsIAglvKO6K1XW/dNF3M/8IXuV1MuMFcEfzG8m/Vcw2MhU5jTt7FMXW etFJqihFmVlhQnrvzPUO188kQsseDlQ= ARC-Authentication-Results: i=1; imf06.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b="XD4epq/w"; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf06.hostedemail.com: domain of dionnaglaze@google.com designates 209.85.219.171 as permitted sender) smtp.mailfrom=dionnaglaze@google.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1660001135; h=from:from:sender: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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=73cKPFgN9gZ8ltMONiXdX091+tMrsz21e0W09IrrYVM=; b=q6ATsQLbG0+yyveRbhikvPVNc9Xbpz21bmn9wxko8vlargbkGhKQdXmeyuHkmrpgwv/mzL zb6aaeSBLOaGK6l4Oe3FZ/QXdyh9MdaKFgWVl83Hpr/ODwr/2ODeD8BJ8tBgKM/nqAVTG8 OGq7F+64wXCLNUx39vaQ/8GY4I85GKA= X-Rspamd-Server: rspam10 X-Stat-Signature: 7bhgnx39fboph7ffxoqhebi4rfngynjx Authentication-Results: imf06.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b="XD4epq/w"; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf06.hostedemail.com: domain of dionnaglaze@google.com designates 209.85.219.171 as permitted sender) smtp.mailfrom=dionnaglaze@google.com X-Rspam-User: X-Rspamd-Queue-Id: 7332118014A X-HE-Tag: 1660001135-228238 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: > Would it be burden to supply all the certificates, both system and per-VM, > in this KVM call? On the SNP Extended Guest Request, the hypervisor could > just check if there is a per-VM blob and return that or else return the > system-wide blob (if present). > I think that's fine by me. We can use SNP_GET_EXT_CONFIG, merge in user space, and create an instance override with a KVM ioctl without touching ccp. -- -Dionna Glaze, PhD (she/her)