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 0B68F20322 for ; Fri, 28 Nov 2025 08:24:23 +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=1764318264; cv=none; b=Gsd7UBSXL0ou8228pKREcFcmZ8kO6eMzIcbkrplT1NfhDwGUi7dz2uRoqdN/bOcS4dnYrOEHHO1fJ2gvB6cc7jLFOYOGtLdh0Im+TEXn/ig/CEelFvKiyicXRtQxuzzOjeA83NrMKbFgeP+hubjEoYt8t8ch9RAQh9CgWg2PHYc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764318264; c=relaxed/simple; bh=TxbNUU5rEWpRsji0Fkm5s4PvabTJgP9dBBi/HLey9tQ=; h=Message-ID:Date:MIME-Version:Subject:From:To:Cc:References: In-Reply-To:Content-Type; b=E5FY2Mo0r+y/3fPDR17SS6uz1qYQUvTW19B21cMr9lxmLZFBuLx6zD7U5E4HiIPBLhmx1Itm8C4oitFUzye5kawwEt52zO2dZOXj64ed474OHnN4M+9q4Ajxu0+BgiFjG+QMCvzidSOgzR9DkGOXD6kVywKrf4rSzobA1wmozcc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=twHtpgRh; 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="twHtpgRh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A0723C4CEF1; Fri, 28 Nov 2025 08:24:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764318263; bh=TxbNUU5rEWpRsji0Fkm5s4PvabTJgP9dBBi/HLey9tQ=; h=Date:Subject:From:To:Cc:References:In-Reply-To:From; b=twHtpgRhhqE2tes1gOGyLCWGfpBFWRDX4cC2jloOgeNAgnHcsJXK22YYZNRKLZqVO KC5JktvEpqre7T6bIsziqWJxGC8KoM6qVMgKK59bYLUE1AzIyg9CNOb9hC7IPTiMBL W6HdAYLuASAw9xkkC+jfmsgPyODM5VRNFMhHBzZxCnTvsa7gAQlxnzB5do4SFNZAiR bOmkUkzx5bun2aKrKsXOZ8HTij4aGIfQiTU32nVQfyXBVs69qIP4Os4+HI76J3NoKC YijfesC/QO8JXGq2zeqH6BaftFiziXAaJeudYSE3BY7TJjYO3b1ob7sr31+15N13g+ DwIU9/pV/9fqw== Message-ID: <189ac734-b194-4b52-9752-18d8c0b71377@kernel.org> Date: Fri, 28 Nov 2025 09:24:18 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 0/2] powerpc/pseries/cmm: two smaller fixes From: "David Hildenbrand (Red Hat)" To: "Ritesh Harjani (IBM)" , linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, Andrew Morton , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy References: <20251021100606.148294-1-david@redhat.com> <557b5500-412a-4d26-8c4b-147c9a00d5fd@kernel.org> <87zf86n3vq.ritesh.list@gmail.com> <3cc7d401-c77c-4ac8-abb8-c264fbd9aaf0@kernel.org> <87y0nqmwaz.ritesh.list@gmail.com> Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit >> >> Right. Let me give it a try first with pseries Qemu. Otherwise I have an >> access to pseries LPAR too. I can verify it there. > > Ah, now I realize my problem: I tried with Fedora 43 in a powerpc VM but > the modprobe didn't do anything. > > Looking again: > > # grep CONFIG_CMM /boot/config-6.17.1-300.fc43.ppc64le > CONFIG_CMM=y > > So modprob'ing won't do as the module is built in. Right, so doing "cmm.simulate=1" on the cmdline in a Fedora 43 VMs properly creates the CMM device. -- Cheers David