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SubjectRe: [PATCH v4 1/2] arm64: topology: move store_cpu_topology() to shared code
On Fri, Jul 15, 2022 at 06:51:55PM +0100, Conor Dooley wrote:
> From: Conor Dooley <>
> arm64's method of defining a default cpu topology requires only minimal
> changes to apply to RISC-V also. The current arm64 implementation exits
> early in a uniprocessor configuration by reading MPIDR & claiming that
> uniprocessor can rely on the default values.
> This is appears to be a hangover from prior to '3102bc0e6ac7 ("arm64:
> topology: Stop using MPIDR for topology information")', because the
> current code just assigns default values for multiprocessor systems.
> With the MPIDR references removed, store_cpu_topolgy() can be moved to
> the common arch_topology code.
> CC:

I'd quantify how far back you want this to go. IIUC based on the Fixes
tag in the other patch, it should stop at 5.4. If you send a pull
request instead and have a fixed commit id, you could add it as a
prerequisite on the following patch without a cc stable here.

Either way:

Acked-by: Catalin Marinas <>

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