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 9665526E6FA; Mon, 16 Mar 2026 11:17:07 +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=1773659827; cv=none; b=Jc/EE6OpkoNgzg2CII1uLgqxvrUzTehlw5Wu2EktuLBXZSa68OrLd0l1EF+RywiufBklHiDfSUqkflRb7wk4xHR4xxqyQ19I8sGcNrh4lyP+aLUfrxzMRU5GlVVwapae/fLDWnGJrFZq+2endRY4oM5NBDBweZyIjQIip4JVqgM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773659827; c=relaxed/simple; bh=FBWXL6VpEYqYyQ5ZhinvdF5kzjlfyO6qEgQ/eJxWwHQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=i5+hNzUw+2j0tYVH2jTCkp4Cx3FeKwjgpcw9VJzXxaMxUUwpjIAdy9UtWXrcvSRPxQfoBQgM77lWtMPpYK1vrqtynbHAFjPBayXCpDMWugq0zc09zGkv0Bn1Vbehma8j4WOn1Swtjx4w3xNG5aLmYXtq3M7Ltcp72PFeBzVFaXc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XRWJr1cN; 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="XRWJr1cN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9A6E5C19421; Mon, 16 Mar 2026 11:17:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773659827; bh=FBWXL6VpEYqYyQ5ZhinvdF5kzjlfyO6qEgQ/eJxWwHQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=XRWJr1cNxCW8WW+XJSPFJRnWyL0WXyUtvvB1ZCujtlIHzA3JE9immclGKXC2a5n3U vbFFbIgfH+YHXuw4W6ReZLW1J475NZJwHAcnfhQZStF2f0TrOIq+a7ldG00+0pNC9W 6APfusqT1tcZ8kfcydyEDR9TbWK9LcqGVj+ca3UhTzNmef/XY2JM5giqEqPxppkhjF cWwbbiHj5NRJ7mMGw9r5xfoTeCRLGmxKudTPdCqkxEG6m2oN4z3fqY3cSeSZIaBiUE D3R7zE41ZfXHFKxhTmglJyuMKO1OzTU6QncOhj7DvlfRHnPT0uC6FcSrtFf+mHWcOp EKr1i9Fdtmk+w== Message-ID: <56ad8ce8-a085-4f67-b4ae-25e5f28c3e51@kernel.org> Date: Mon, 16 Mar 2026 12:17:02 +0100 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 00/10 net-next] Convert CONFIG_IPV6 to built-in and remove stubs To: Vlastimil Babka , "Lorenzo Stoakes (Oracle)" Cc: Daniel Borkmann , Fernando Fernandez Mancera , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, dsahern@kernel.org References: <20260309022013.5199-1-fmancera@suse.de> <48ccec3f-dbc8-45c8-afda-e4f7e8f150d6@kernel.org> <6c005900-3461-4e3c-a396-b2984735af9b@kernel.org> <51102620-fb8a-467e-9144-786d1fe27e31@iogearbox.net> <4e3cd289-2b7a-4f64-99f6-05eb9d67c0fc@kernel.org> <97d85c42-5ef3-4912-abb9-8d4fe6fa54df@suse.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 16/03/2026 12:10, Vlastimil Babka wrote: > On 3/16/26 11:33, Krzysztof Kozlowski wrote: >> On 16/03/2026 11:24, Lorenzo Stoakes (Oracle) wrote: >>> >>> If I'm wrong and somehow Amiga isn't legacy in 2026, then SAY SO instead of >>> giving an unnecessarily mean, dismissive and frankly embarassing response >>> like the above. >> >> Calling something legacy in this thread is not really appropriate >> because it is diminishing its important or requirements. >> >> Till we support given hardware, we are supposed to consider its >> requirements. If you do not consider these requirements, then you do not >> consider that hardware as worth being supported and this means you >> should first propose patch to remove that hardware. > > I don't think it's so binary. AFAIU (and recall also Linus saying that) it's > ok to make things less optimal for older/less common hardware, if that's the > cost to make the kernel better for the major ones. So that's why we're e.g. > discussing removing CONFIG_HIMEM which could limit how much physical RAM > some 32bit architectures can use. Or we can have new features e.g. 64-bit only. > > We can call that older/less common hardware "legacy" or "museum" or > whatever, I wouldn't say it's diminishing it, just stating a fact. Yes. Amiga was the first thing I poked to discuss affecting less capable hardware. But we could also talk about ARM 32-bit, which is not yet considered "legacy" because new hardware is being manufactured and sold. Legacy in a meaning we do consider its requirements/support. > > Of course the devil is in the details so that probably to some extent > depends on what exactly you mean as "requirements" above. AFAIU the > conclusion here was already that ipv6=m isn't consired one for Amiga to > stay, and it's enough to have ipv6=n there. > Yes, and other replies (parallel threads) also provide context and arguments why most, not all though, distros don't even use IPV6=m, while they are making everything else modules by default. Best regards, Krzysztof