Re: [PATCH] hwmon: (coretemp) Fix handling of isolated SMT siblings

[sashiko-bot@kernel.org]

> From: Ximing Zhang <xzhangjr@gmail.com>
> 
> Commit 0f8b916bc5b5 ("hwmon: (coretemp) avoid RDMSR interrupts to
> isolated CPUs") prevents create_core_data() from creating temperature
> data for an isolated CPU. coretemp_cpu_online(), however, still adds
> that CPU to pdata->cpumask.
> 
> When an isolated SMT thread is processed before a housekeeping sibling,
> the mask makes coretemp_cpu_online() believe that the core is already
> represented. The housekeeping sibling then gets no temperature
> attributes. Package attributes are similarly not retried when the first
> CPU processed in a die is isolated.
> 
> The mask is also used to select a replacement CPU when a sensor target
> goes offline. Including isolated CPUs permits the driver to retarget a
> [ ... ]
> 
> Fixes: 0f8b916bc5b5 ("hwmon: (coretemp) avoid RDMSR interrupts to isolated CPUs")
> Cc: stable@vger.kernel.org
> Cc: Marcelo Tosatti <mtosatti@redhat.com>
> Signed-off-by: Ximing Zhang <xzhangjr@gmail.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20261016-codex-coretemp-housekeeping-v1-1-96618c5676b2@gmail.com?part=1