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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 0536FC388F7 for ; Tue, 10 Nov 2020 10:15:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6F4AA207E8 for ; Tue, 10 Nov 2020 10:15:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="uHCxhFHS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729909AbgKJKPu (ORCPT ); Tue, 10 Nov 2020 05:15:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727536AbgKJKPu (ORCPT ); Tue, 10 Nov 2020 05:15:50 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D99C8C0613CF for ; Tue, 10 Nov 2020 02:15:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=CDnrTQO3oLKsIPoRXOWKhlw6v2wORA6EgStmJKbRLyc=; b=uHCxhFHSswLZ7vAYcHATP5bd/m FT+iCClwmwUEk/6LfQTpnR278IY/btZYg8TEOY20uE6JtYZp9jxRJKMxXyUotRqA9KdH0W8moJ9z1 Qy7+BivKZx7GsMNa+bXMiNXemztq0qnU18Mf3JIqDyLznHGWz6VDfQ7z2FSz8kgSa2NZhFgZ7eP4t Ro1PVrsDK8oAOkWRsKhC7EGufL0j2dMUP6xVaKSuEZTdEtgVfbmlVs1DQLzd3JEPG3Lh3MtU3ZFFH 53eB7sHqkRw/FVQqvStXNAnB75H+vIfjnMzQkxUX/i7n/lFovYYPDz8BRKX03VnVipQwbkg399bXm Zlm92mdg==; Received: from hch by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcQgg-00054V-8l; Tue, 10 Nov 2020 10:15:42 +0000 Date: Tue, 10 Nov 2020 10:15:42 +0000 From: Christoph Hellwig To: David Brazdil Cc: kvmarm@lists.cs.columbia.edu, Mark Rutland , kernel-team@android.com, Lorenzo Pieralisi , Andrew Walbran , Suzuki K Poulose , Marc Zyngier , Quentin Perret , linux-kernel@vger.kernel.org, James Morse , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Tejun Heo , Dennis Zhou , Christoph Lameter , Will Deacon , Julien Thierry , Andrew Scull Subject: Re: [PATCH v1 00/24] Opt-in always-on nVHE hypervisor Message-ID: <20201110101542.GA17572@infradead.org> References: <20201109113233.9012-1-dbrazdil@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201109113233.9012-1-dbrazdil@google.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 09, 2020 at 11:32:09AM +0000, David Brazdil wrote: > As we progress towards being able to keep guest state private to the > host running nVHE hypervisor, this series allows the hypervisor to > install itself on newly booted CPUs before the host is allowed to run > on them. Why? I thought we were trying to kill nVHE off now that newer CPUs provide the saner virtualization extensions? 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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 6E186C4741F for ; Tue, 10 Nov 2020 10:15:53 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id B096420797 for ; Tue, 10 Nov 2020 10:15:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="uHCxhFHS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B096420797 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id C3DDC4B7B5; Tue, 10 Nov 2020 05:15:51 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@infradead.org Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id FVf5ABbBVs0Z; Tue, 10 Nov 2020 05:15:50 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 96E2F4B641; Tue, 10 Nov 2020 05:15:50 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 7A9F84B4DF for ; Tue, 10 Nov 2020 05:15:49 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id a-v+nFsEn20b for ; Tue, 10 Nov 2020 05:15:46 -0500 (EST) Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id CCC524B4B6 for ; Tue, 10 Nov 2020 05:15:46 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=CDnrTQO3oLKsIPoRXOWKhlw6v2wORA6EgStmJKbRLyc=; b=uHCxhFHSswLZ7vAYcHATP5bd/m FT+iCClwmwUEk/6LfQTpnR278IY/btZYg8TEOY20uE6JtYZp9jxRJKMxXyUotRqA9KdH0W8moJ9z1 Qy7+BivKZx7GsMNa+bXMiNXemztq0qnU18Mf3JIqDyLznHGWz6VDfQ7z2FSz8kgSa2NZhFgZ7eP4t Ro1PVrsDK8oAOkWRsKhC7EGufL0j2dMUP6xVaKSuEZTdEtgVfbmlVs1DQLzd3JEPG3Lh3MtU3ZFFH 53eB7sHqkRw/FVQqvStXNAnB75H+vIfjnMzQkxUX/i7n/lFovYYPDz8BRKX03VnVipQwbkg399bXm Zlm92mdg==; Received: from hch by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcQgg-00054V-8l; Tue, 10 Nov 2020 10:15:42 +0000 Date: Tue, 10 Nov 2020 10:15:42 +0000 From: Christoph Hellwig To: David Brazdil Subject: Re: [PATCH v1 00/24] Opt-in always-on nVHE hypervisor Message-ID: <20201110101542.GA17572@infradead.org> References: <20201109113233.9012-1-dbrazdil@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201109113233.9012-1-dbrazdil@google.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Cc: Lorenzo Pieralisi , Andrew Walbran , Marc Zyngier , linux-kernel@vger.kernel.org, Will Deacon , Catalin Marinas , Tejun Heo , Dennis Zhou , Christoph Lameter , kernel-team@android.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On Mon, Nov 09, 2020 at 11:32:09AM +0000, David Brazdil wrote: > As we progress towards being able to keep guest state private to the > host running nVHE hypervisor, this series allows the hypervisor to > install itself on newly booted CPUs before the host is allowed to run > on them. Why? I thought we were trying to kill nVHE off now that newer CPUs provide the saner virtualization extensions? _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm 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=-3.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 B3B2FC388F7 for ; Tue, 10 Nov 2020 10:16:09 +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 3706220797 for ; Tue, 10 Nov 2020 10:16:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="aTcRGms9"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="uHCxhFHS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3706220797 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org 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-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Pk0JyESYyadXOuR+nKKa/0OvKFhvJyYi5h5+sM/obkg=; b=aTcRGms9B70ZGgqxnl9/RfRtA 3rTBV+yIbBkseNbCqDXStS9tJom6FQwm0k6Ha2Tozo0Bw9sAxB7cS4cpsX6/7gxZvrTCOgXdItqVi vmNSvshhinDKdVd5/NVtq1zYxDKBmnT04Ng2btlifRylLUo3jFC4WVjyqq0/PxQApUk6tiJtDqcS2 SSm237rnERsalKd8YmrCQHP6MP/D8nqNLMJj7PQoTrr244FPq9faJdUMQF1s0moYEOd5Wa3eBw0cc 1wLbAS2gEXXpapuu2RqQLQ3Eycm2LRTdUqkwJspZXOuKIS+UI6gFuEL4duPji57URyBgnxvp2JqZ3 9LcGzQaEQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcQgk-0002U6-Tp; Tue, 10 Nov 2020 10:15:46 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcQgj-0002TR-7O for linux-arm-kernel@merlin.infradead.org; Tue, 10 Nov 2020 10:15:45 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=CDnrTQO3oLKsIPoRXOWKhlw6v2wORA6EgStmJKbRLyc=; b=uHCxhFHSswLZ7vAYcHATP5bd/m FT+iCClwmwUEk/6LfQTpnR278IY/btZYg8TEOY20uE6JtYZp9jxRJKMxXyUotRqA9KdH0W8moJ9z1 Qy7+BivKZx7GsMNa+bXMiNXemztq0qnU18Mf3JIqDyLznHGWz6VDfQ7z2FSz8kgSa2NZhFgZ7eP4t Ro1PVrsDK8oAOkWRsKhC7EGufL0j2dMUP6xVaKSuEZTdEtgVfbmlVs1DQLzd3JEPG3Lh3MtU3ZFFH 53eB7sHqkRw/FVQqvStXNAnB75H+vIfjnMzQkxUX/i7n/lFovYYPDz8BRKX03VnVipQwbkg399bXm Zlm92mdg==; Received: from hch by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcQgg-00054V-8l; Tue, 10 Nov 2020 10:15:42 +0000 Date: Tue, 10 Nov 2020 10:15:42 +0000 From: Christoph Hellwig To: David Brazdil Subject: Re: [PATCH v1 00/24] Opt-in always-on nVHE hypervisor Message-ID: <20201110101542.GA17572@infradead.org> References: <20201109113233.9012-1-dbrazdil@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201109113233.9012-1-dbrazdil@google.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html 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 , Lorenzo Pieralisi , Andrew Walbran , Suzuki K Poulose , Marc Zyngier , Quentin Perret , linux-kernel@vger.kernel.org, Will Deacon , James Morse , Julien Thierry , Catalin Marinas , Tejun Heo , Dennis Zhou , Christoph Lameter , kernel-team@android.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, Andrew Scull Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Nov 09, 2020 at 11:32:09AM +0000, David Brazdil wrote: > As we progress towards being able to keep guest state private to the > host running nVHE hypervisor, this series allows the hypervisor to > install itself on newly booted CPUs before the host is allowed to run > on them. Why? I thought we were trying to kill nVHE off now that newer CPUs provide the saner virtualization extensions? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel