From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 02EB825760; Thu, 20 Feb 2025 06:33:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740033184; cv=none; b=bfQ8odPqZJRguGwQmPutxJMRdtehVrsX/G7Tx3Rl+VInwk7P/dEsTXRCK89b8a6YU3+GRBXcf9fiuRPc/uw+bVMVKOQDZJ1QrO6fpTYJ42bJz/v5rEt53oN8VuAmGtqlerGQ0EhHl0krvcBQJ8LhUZSH3xglmptYOsObKkHFk3o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740033184; c=relaxed/simple; bh=CsIKT7rs9zrHL6VYaLhsv5flP79D10ZOGjOixxslX3U=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ckiW+zg2+HWymkk60E1eq331mEUFbUjBHIXn+mnDku1oXnvLDBwWLH5srrf4d9aWYB/gCLmCX99ckuiYf4jNup3qsWoiOrOc+zJ5+B1vH5UJ626vTKl83EASRD6UYvTzr83e1l5AE6G9apLFytNE9fhEXygNsmrtVtVaBlufHAY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=N40ZSDWG; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="N40ZSDWG" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=/UyTduM4ptNAxZlxL6Vr7DQS5QVkhj4idYmNNIkyK4I=; b=N40ZSDWGzTKs7AL3gSV3O/8ShI ZAoho7Sxqqz81Pcb9L7O5Qa1msahkl4/J5LQhIdcuK51yBGfLHukkKxvEGaWLuHcMPlx4sLbmWKQI 0UlIER4dYSL2hy6Q1W5Zq7grud/+wwpH9+r8Pwe8oZxh2pLFMWtjKguvG95jgiWE4p0R1g5qX51KA 588FiaY+EoXvn70I2JoK/hjvRkxjY6ogK5KFOBccDl9Ijv1b3JwEOt6R7WAyVDL8htFPPScIhPzam HdriNkinCoOobwlPSFye9eox6c67+nOyXSnMh9TrBYbpEu2cz5F0Xq//Bk1eAntqaGCLHclkXwBxO gyuIip2w==; Received: from hch by bombadil.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tl07K-0000000GxAk-24hX; Thu, 20 Feb 2025 06:33:02 +0000 Date: Wed, 19 Feb 2025 22:33:02 -0800 From: Christoph Hellwig To: Jiri Kosina Cc: Christoph Hellwig , Miguel Ojeda , rust-for-linux , Linus Torvalds , Greg KH , David Airlie , linux-kernel@vger.kernel.org, ksummit@lists.linux.dev Subject: Re: Rust kernel policy Message-ID: References: <45rpsr92-4416-9no4-8o26-r0998nr77nr8@xreary.bet> Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45rpsr92-4416-9no4-8o26-r0998nr77nr8@xreary.bet> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Tue, Feb 18, 2025 at 06:36:55PM +0100, Jiri Kosina wrote: > > [2] The idea of drivers in eBPF as done by HID also really doesn't help > > with that as much as I like eBPF for some use cases > > I don't necessarily agree on this specific aspect, but what (at least to > me personally) is the crucial point here -- if we at some point decide > that HID-eBPF is somehow potentially unhealthy for the project / > ecosystem, we can just drop it and convert the existing eBPF snippets to a > proper simple HID bus drivers trivially (I'd even dare to say that to some > extent perhaps programatically). Well, Linus declared any bpf kfunc / helper program type change that breaks userspace as a no-go. And such a change very much does.