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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13505C433F5 for ; Wed, 20 Oct 2021 23:11:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EA40C6112D for ; Wed, 20 Oct 2021 23:11:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230510AbhJTXOJ (ORCPT ); Wed, 20 Oct 2021 19:14:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229702AbhJTXOH (ORCPT ); Wed, 20 Oct 2021 19:14:07 -0400 Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAB8CC06161C for ; Wed, 20 Oct 2021 16:11:52 -0700 (PDT) Received: by mail-pg1-x532.google.com with SMTP id h193so8470526pgc.1 for ; Wed, 20 Oct 2021 16:11:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=eGrv+CxXyYRvAs6KmTovHir34xOKh1cfsmwvnlS+YPA=; b=ZyGzazrKiKBIBaB6LY1znYanf7wW7e/va1RD+uQURf0sUYeUoAEUp/Jhjqr8EHo0r5 +1EzU/Cihjq5POAXEdGpFS2Ou/kyfpO/nKKRkXgl0EF+6hd5+0woNlGbNJF5K0K7ok6S neu0PRSQ34K1mDkhj93nAFmbt2egR17JOmwrV73p6BOkKGvUuJPvksP83YrcpoukmIOQ z93jTQ55xuAwJeFGBIAinjNhcCirJIeoryTki9INOHpK1WX4eCfD2AcfoA8UjZoqLPr4 umAIIcsa3CSEcFniT18lxpTaCcdkzyu4w0HghsXFYnuX3zxEy+7vEjS5eIBHXO4KF9hW TLTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=eGrv+CxXyYRvAs6KmTovHir34xOKh1cfsmwvnlS+YPA=; b=7rbqbMPpupWDRyoeuHSrnUII9PplXptz2vXpNt5lAs46lajS85z2NoLEwrKsnmPkBZ HRxJ7RVhWHdCSb4lusFBEyg0idmUw1zo0kzRAzty2QU1Su6pSIsT3Um3z4HzQUOwf2/u oRaPGOGmCo6d9J4GsBWxxSGBj8rIcRsN5SK8sZdK8R0qJLwu1W5mYAtT1zMWjZ9b3jDb nrKHTUQ2FRvql5sh3EcT2i1HSziJGr8T4ZBre/G+9wVsf6BR+1bJqJNjzhXzQbGMdP2B pLwli3QDGaAj7e4UutEsnRmzOybVJufqYRyHCCzkpkzBKzJu21NLC+PnoRiePmKR2JY9 Us0A== X-Gm-Message-State: AOAM532w6uhNbKnkj4F0d1kelYnthAlMW5WMOteol48sYXjjSDHZNUAV Xm96E8XWpUosQEG9MLvfXAXe9w== X-Google-Smtp-Source: ABdhPJwNRERW0ENkYdB0fchTa2Tapc3S8SdYVsoVnLrRyt3urhl+Wjfedr26NPBvaRjwKouC5nmnHA== X-Received: by 2002:a63:bf45:: with SMTP id i5mr1612783pgo.161.1634771512106; Wed, 20 Oct 2021 16:11:52 -0700 (PDT) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id u74sm3647767pfc.87.2021.10.20.16.11.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Oct 2021 16:11:51 -0700 (PDT) Date: Wed, 20 Oct 2021 23:11:47 +0000 From: Sean Christopherson To: Amy Parker Cc: kvm@vger.kernel.org, pbonzini@redhat.com Subject: Re: Addition of a staging subdirectory to virt/ for in-development features Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Wed, Oct 20, 2021, Amy Parker wrote: > Hello all. > > Has the idea of having a staging subdirectory for KVM been proposed before? Not that I know of. > It could become a buffer place for KVM features currently in development/not > production ready, but that should be able to be conditionally included into > the kernel. With a staging directory, these features would be divorced from > KVM mainline, but would be able to be rolled out promptly to users while they > are being refined. Can you give an example? I'm struggling to envision a feature that is both large enough to warrant "staging", yet isolated enough to actually be "divorced from KVM mainline". One of the rules for staging/drivers is that the drivers are standalone and don't require changes to the kernel proper outside of docs, firmware, and perhaps exports.