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 C5CFF1917C2 for ; Wed, 27 Nov 2024 09:04:58 +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=1732698299; cv=none; b=haVSACtPE2oPDHDxSZ82xL3toqv1j7/Rr9lfTpaBHuka7oq8Cj9tUR3e8lI1nZwfaXtds6V+8zQvpOw7UQd6oSJObvdb6zDWCQiWFwQLGyyTkuheohjbZuDH4w9x4aAH3EnZUKjxUNNNlVKDiZ/naHiONazHuhSlTR0qsazSrJo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732698299; c=relaxed/simple; bh=WkPvhthsAuPWzNVYbj0HobwE43UwtUljTpGfvwmj1bY=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=PUy4VD0QB9fJWU6cozJFZYYnlzJicFIAeeP9SIx8XaM2FqXcmKlRwbcHJ3Q93gOwh2cCcVzDC3bV/Rx/06i8PeltTTYnjWWAQJDv2iNxxHSZ9XKdrvuSUXoznmLYUCH1K3/7hEgAGgMhTzKNx+S7ZkIcxVeE0zLtoHnHg+xaNjU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Sn2pezW0; 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="Sn2pezW0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 67ECAC4CECC; Wed, 27 Nov 2024 09:04:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1732698298; bh=WkPvhthsAuPWzNVYbj0HobwE43UwtUljTpGfvwmj1bY=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=Sn2pezW0LfJmBJRUQiqXEFHajmYOPyhW8+G4gaq4c1j6bLINa9N9OK9rqoFfM+A8h 8YEtjKOffdlpaMG2By74IsE+zDrdEQWU+rEtNVksXLGfez1xhHg+MBOZgpKNyKmFws 0cKaP9qfVlkTYrKtcQfYSjra7Wx6HmMgAusENL0wwCRJktyenEzuZcxLgeZYPu6KLr 9JqroPVARpKl8/AXRRmo7leUkyfH4IdbJmflSaIu1ZO8I3HshrkkT8fyZm3tlBYc6m jpBgk1uGwvab6wVabO5Jb5z+rRDeSLdMLJaSnSsMm/xSolrCrMCCHSBH+EcmH7VDcA /bg+2DerItJdw== 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 1tGDyi-00GDPe-8a; Wed, 27 Nov 2024 09:04:56 +0000 Date: Wed, 27 Nov 2024 09:04:55 +0000 Message-ID: <86bjy1ujwo.wl-maz@kernel.org> From: Marc Zyngier To: Bernhard Kauer Cc: Paolo Bonzini , kvm@vger.kernel.org Subject: Re: [PATCH] KVM: make uevents configurable In-Reply-To: References: <20241122095806.4034415-1-bk@alpico.io> <86h67vusnf.wl-maz@kernel.org> <86frneutlt.wl-maz@kernel.org> 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: bk@alpico.io, pbonzini@redhat.com, kvm@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Wed, 27 Nov 2024 08:38:59 +0000, Bernhard Kauer wrote: > > On Tue, Nov 26, 2024 at 11:23:10AM +0000, Marc Zyngier wrote: > > > > I'm not overly keen on the command-line flag though, as this is the > > > > sort of things you'd like to be able to control more finely. Or at > > > > least without having to trigger a reboot. > > > > > > I compile KVM as module, so I can reload it with different parameters > > > easily. > > > > arm64 doesn't (and cannot) build KVM as a module. > > Ah, I didn't realize it. But being able to patch EL2 from EL1 is probably > more complicated than what is gained with it. It is mostly pulling the rug from under your feet if you do that on non-VHE systems, and make absolutely for things like pKVM. > > > But I can make the module parameter read-write so that it is modifiable > > > during runtime via /sys/module/kvm/parameters/ even when KVM is compiled > > > into the kernel. > > > > I guess that'd be the next best thing. > > Ok, I will do that in v2 of the patch to be sent next week. Thanks. M. -- Without deviation from the norm, progress is not possible.