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[96.255.20.138]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8953c075fc3sm5353626d6.51.2026.02.05.15.10.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Feb 2026 15:10:57 -0800 (PST) Date: Thu, 5 Feb 2026 18:10:55 -0500 From: Gregory Price To: Andrew Morton Cc: Cui Chao , dan.j.williams@intel.com, Jonathan Cameron , Mike Rapoport , Wang Yinfeng , linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v2 1/1] mm: numa_memblks: Identify the accurate NUMA ID of CFMW Message-ID: References: <20260106031042.1606729-1-cuichao1753@phytium.com.cn> <20260106031042.1606729-2-cuichao1753@phytium.com.cn> <20260108094812.8757ce3ad8370668eaafb29c@linux-foundation.org> <9132054c-3017-4af0-84e0-e4359b0794a6@phytium.com.cn> <20260115101858.85fd7b8e837c1c92a4fdc5f0@linux-foundation.org> <696944eca1837_34d2a10056@dwillia2-mobl4.notmuch> <2d1e23ad-7ec1-483b-88b3-70ce19b69106@phytium.com.cn> <20260205145842.efb90572a902ae4c481e6ef6@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260205145842.efb90572a902ae4c481e6ef6@linux-foundation.org> X-Stat-Signature: 5utuykp1q85wi85wsw66fosmb7k4t9cu X-Rspamd-Queue-Id: 6F3904000F X-Rspam-User: X-Rspamd-Server: rspam04 X-HE-Tag: 1770333058-459119 X-HE-Meta: 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 EN/RXGhh fi4oiVlG2SAgJzDBqnhXZqQMQM9vc2CfhmArZOx+Xh5R/wUwslNFxJmHrnXknUV5qC2TSBcJ6cUwP8xvPuum0H4l3cfWko+bn77mkuSKxLW8Elm5UKY6JlVBCkpnInB40n73oBBWYM2mfykEmYtK5bkDmUvmpcr3XIxtbk6BgrQRtaBkIH6AwcZPjZN4NtXvWXrtLT+TyJ469Frjv6vfHX3GrBiSuohZwQAnPg1rl8GnH7yGzUoRIFI73hhS0ZKqy+i/Q303kCsRSJ/KbQ8Ae/k5G3DcV7OymsyAUASOruEYjZ70cga9iR24IFANjeeHEUV0zeqJb1bzJpJIOvC3dJ+fzSXcAz4hokMDIAPku7yB+udUfSq7pn2awVS4IbEPqI/uLGgrN5AYKpCQKJFcPs6rGfbT9k6Tker8KjODrBT2mfuCnh2V7FKQLKA== 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: On Thu, Feb 05, 2026 at 02:58:42PM -0800, Andrew Morton wrote: > On Mon, 26 Jan 2026 17:06:52 +0800 Cui Chao wrote: > > > > All that said, this does look harmless, and seems reasonable - but the > > > changelog should reflect what the hardware is doing above. > > This issue was discovered on the QEMU platform. I need to apologize for > > my earlier imprecise statement (claiming it was hardware instead of > > QEMU). My core point at the time was to emphasize that this is a problem > > in the general code path when facing this scenario, not a QEMU-specific > > emulation issue, and therefore it could theoretically affect real > > hardware as well. I apologize for any confusion this may have caused. > > This patch doesn't sounds very urgent. Perhaps we should do a v3 with > updated changelog and handle that in the next -rc cycle? Mostly QEMU just needs to add SRAT entries associated with the CEDT/CFMWS it adds. A system providing a CEDT/CFMWS entry without an SRAT entry is arguably bad BIOS. But yeah, this is not urgent. ~Gregory