From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BF20738DD8; Mon, 17 Mar 2025 10:51:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742208681; cv=none; b=iOAlkz1w53hh9k0ZfaJgABnud8p99do6PGwhnQz5rBw797+LHXcJtcVS8oxoBRfKLWxUNPpUeVtTnRy47GC4PO8VfI2tqS70w9vrsjfBZ7diqKvKz6uz9G8ValYq85lt4HvUoxzyBClLkdUUgL8RNmKJawsU9S4CnCgq2N72AGE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742208681; c=relaxed/simple; bh=UU6EdbDdsspktrWFl8s+AWtJcfBbnfdF1EGP7Mf/Fes=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=ZZK1nZoHEoR0IV1I3FC7R6aIYhpsj0XAlIRoyrWwXFmDK4+pmGIRUs/WJYC+6F9sw9N1r1Tri6bHsp01V5XAKMM7oA9QnKPIqX/ivVMuhvvcC2mJNOxBzylPzkfD2tKM5A/j5an1Hlt1S3+OpTs0Wg3ila6np8LyYW1ikomWpXM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mbwDRQ+R; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mbwDRQ+R" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 36A3DC4CEE3; Mon, 17 Mar 2025 10:51:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742208681; bh=UU6EdbDdsspktrWFl8s+AWtJcfBbnfdF1EGP7Mf/Fes=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=mbwDRQ+RcS73GF3oRFI9TU1H+WBWCoAwGYvMS8wQ4s5HCJBaF7z8Tk494E0dILiae NzCj2U4XgGHIsmXwEMw1pX7x5+aaNoMv5s2RVOXaGAcl0beBO8TzYbELHAlgKqjdW7 o2/bj0BPhZBMoCDuq+2hembVG500r1utCSpUqXRjy5vXhnod4STS2DHFHphC7q/Igv w5YJF6OOsfqUr/3CRR/JZGzHRMpkN0Y6unWqf1edQYd+SyA5FrXYnf/8XPDjgH33uI CeO/+SLcgBKpVsfCakWjtMm+PElQ+MdfkhNYlJ4Grg1Fc+JwfnGMfJRt9STqKlO41B pMrJa71/cLGoQ== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1tu83z-00EFxc-1p; Mon, 17 Mar 2025 10:51:19 +0000 Date: Mon, 17 Mar 2025 10:51:18 +0000 Message-ID: <861puwnd5l.wl-maz@kernel.org> From: Marc Zyngier To: Alexandru Elisei Cc: Oliver Upton , kvmarm@lists.linux.dev, kvm@vger.kernel.org, Will Deacon , Julien Thierry , andre.przywara@arm.com, jean-philippe@linaro.org Subject: Re: [RFC kvmtool 0/9] arm: Drop support for 32-bit kvmtool In-Reply-To: References: <20250314222516.1302429-1-oliver.upton@linux.dev> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/29.4 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: alexandru.elisei@arm.com, oliver.upton@linux.dev, kvmarm@lists.linux.dev, kvm@vger.kernel.org, will@kernel.org, julien.thierry.kdev@gmail.com, andre.przywara@arm.com, jean-philippe@linaro.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Mon, 17 Mar 2025 10:39:44 +0000, Alexandru Elisei wrote: > > Hi Oliver, > > I'm CC'ing Marc and Andre (Andre is the only person that I know for a fact > that ran 32 bit kvmtool). > > Haven't looked at the patches in detail, but as someone who ocassionally > contributes to kvmtool, I have to say it's always nice to have fewer things > to worry about. I, for one, never used 32 bit kvmtool, I just compiled for > 32 bit arm to make sure it doesn't break. > > If nobody objects to dropping support for 32 bit kvmtool, I'm planning to > review the patches. Frankly, the removal of 32bit support is long overdue. Every time I hack something in kvmtool (at least once a month), I have to wonder how to fit that in the 32bit code that I *know* to be dead code. We kept it ticking around when the kernel code was removed back in 5.6, and in the interval I have ran it *once*. These days, I don't even have a working 32bit setup. In all honesty, someone using 32bit KVM can also use an older build of kvmtool (this piece of SW is *done*), and we can happily move on. Thanks, M. -- Without deviation from the norm, progress is not possible.