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[23.128.96.18]) by mx.google.com with ESMTP id p15si3336578edx.69.2020.11.26.08.23.58; Thu, 26 Nov 2020 08:24:23 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=gbY5++SR; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391400AbgKZQT7 (ORCPT + 99 others); Thu, 26 Nov 2020 11:19:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:59912 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730602AbgKZQT7 (ORCPT ); Thu, 26 Nov 2020 11:19:59 -0500 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4D1E4207BC; Thu, 26 Nov 2020 16:19:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606407598; bh=ndZG1t6GX24rtYFtgwoylSOLLR+0rulFS7DxFgbvXNo=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=gbY5++SR3vNOtbMoB4xpEm/VEC6LVzSf4wFcDTs8Ksqjw7lWuG8ErnYiM88/diAgh CwFHY46uwK1EMJOBTB+X0eW8BflTc4pPNZJzZL/R4rwtmB3zk81GFcfjjWlvtsGzMV ITl065COD8OebFRSGxHoiQDl1Q1CKrjCt/ES4hKk= Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94) (envelope-from ) id 1kiJzw-00Dr0o-2I; Thu, 26 Nov 2020 16:19:56 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Thu, 26 Nov 2020 16:19:55 +0000 From: Marc Zyngier To: Matthew Wilcox Cc: David Brazdil , kvmarm@lists.cs.columbia.edu, Jonathan Corbet , Catalin Marinas , Will Deacon , James Morse , Julien Thierry , Suzuki K Poulose , Dennis Zhou , Tejun Heo , Christoph Lameter , Mark Rutland , Lorenzo Pieralisi , Sudeep Holla , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel-team@android.com Subject: Re: [PATCH v3 00/23] Opt-in always-on nVHE hypervisor In-Reply-To: <20201126155746.GU4327@casper.infradead.org> References: <20201126155421.14901-1-dbrazdil@google.com> <20201126155746.GU4327@casper.infradead.org> User-Agent: Roundcube Webmail/1.4.9 Message-ID: <6a2a14af06232cdf2f5146cd8ec6fc35@kernel.org> X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: willy@infradead.org, dbrazdil@google.com, kvmarm@lists.cs.columbia.edu, corbet@lwn.net, catalin.marinas@arm.com, will@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, dennis@kernel.org, tj@kernel.org, cl@linux.com, mark.rutland@arm.com, lorenzo.pieralisi@arm.com, sudeep.holla@arm.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020-11-26 15:57, Matthew Wilcox wrote: > On Thu, Nov 26, 2020 at 03:53:58PM +0000, David Brazdil wrote: >> The hypervisor starts trapping host SMCs and intercepting host's PSCI >> CPU_ON/SUSPEND calls. It replaces the host's entry point with its own, >> initializes the EL2 state of the new CPU and installs the nVHE hyp >> vector >> before ERETing to the host's entry point. > > I hate CPU people. This is complete gibberish to anyone who doesn't > already have their head deep in ... whatever you're talking about. What I hate the most is people having a go at other people because they don't understand what is being discussed. Who is at fault there? M. -- Jazz is not dead. It just smells funny...