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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 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 X-Rspamd-Queue-Id: 9DFB1A0007 X-Rspamd-Server: rspam02 X-Stat-Signature: ucgaktfms4mm64fki7i3xjhz4aih9wrd X-Rspam-User: X-HE-Tag: 1764318264-410659 X-HE-Meta: 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 lcA0D44l Jt+kZp++RtCBOrF8ViSy5PuxboBZ1lTt8zJmd X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: >> >> 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