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Fri, 22 Mar 2024 14:41:17 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id gl3-20020a17090b120300b00298cc4c56cdsm5977617pjb.22.2024.03.22.14.41.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Mar 2024 14:41:17 -0700 (PDT) Sender: Guenter Roeck Date: Fri, 22 Mar 2024 14:41:16 -0700 From: Guenter Roeck To: Thomas Gleixner Cc: LKML , x86@kernel.org, Linus Torvalds Subject: Re: [patch 2/4] x86/topology: Dont evaluate logical IDs during early boot Message-ID: <3e8c08e0-dbfe-42b8-9668-bdcaac9eef4f@roeck-us.net> References: <20240322184944.141421692@linutronix.de> <20240322185305.186943142@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240322185305.186943142@linutronix.de> On Fri, Mar 22, 2024 at 07:56:36PM +0100, Thomas Gleixner wrote: > The local APICs have not yet been enumerated so the logical ID evaluation > from the topology bitmaps does not work and would return an error code. > > Skip the evaluation during the early boot CPUID evaluation and only apply > it on the final run. > > Fixes: 380414be78bf ("x86/cpu/topology: Use topology logical mapping mechanism") > Signed-off-by: Thomas Gleixner Tested-by: Guenter Roeck Guenter