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Thu, 14 Nov 2024 10:29:17 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Thu, 14 Nov 2024 16:28:56 +0100 From: "Arnd Bergmann" To: "Michael Ellerman" , linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org, "Jeremy Kerr" , "Geoff Levand" Message-Id: <9eed5e2a-4ed1-4195-a5b5-511b4d5cd53a@app.fastmail.com> In-Reply-To: <20241114125111.599093-1-mpe@ellerman.id.au> References: <20241114125111.599093-1-mpe@ellerman.id.au> Subject: Re: [RFC PATCH 01/20] powerpc/cell: Remove support for IBM Cell Blades Content-Type: text/plain Content-Transfer-Encoding: 7bit On Thu, Nov 14, 2024, at 13:50, Michael Ellerman wrote: > IBM Cell Blades used the Cell processor and the "blade" server form > factor. They were sold as models QS20, QS21 & QS22 from roughly 2006 to > 2012 [1]. They were used in a few supercomputers (eg. Roadrunner) that > have since been dismantled, and were not that widely used otherwise. > > Until recently I still had a working QS22, which meant I was able to > keep the platform support working, but unfortunately that machine has > now died. > > I'm not aware of any users. If there is a user that wants to keep the > upstream support working, we can look at bringing some of the code back > as appropriate. > > See previous discussion at [2]. > > Remove the top-level config symbol PPC_IBM_CELL_BLADE, and then > the dependent symbols PPC_CELL_NATIVE, PPC_CELL_COMMON, CBE_RAS, > PPC_IBM_CELL_RESETBUTTON, PPC_IBM_CELL_POWERBUTTON, CBE_THERM, and > AXON_MSI. Then remove the associated C files and headers, and trim > unused header content (some is shared with PS3). > > Note that PPC_CELL_COMMON sounds like it would build code shared with > PS3, but it does not. It's a relic from when code was shared between the > Blade support and QPACE support. > > Most of the primary authors already have CREDITS entries, with the > exception of Christian, so add one for him. > > [1]: https://www.theregister.com/2011/06/28/ibm_kills_qs22_blade > [2]: > https://lore.kernel.org/linuxppc-dev/60581044-df82-40ad-b94c-56468007a93e@app.fastmail.com > > Signed-off-by: Michael Ellerman Nice clearnup! Whole series Acked-by: Arnd Bergmann Everything here looks good, I had a few comments, but those are all for follow-up work. Arnd