[PATCH v4 1/2] arm64: topology: move store_cpu_topology() to shared code

[Catalin Marinas]

On Tue, Jul 19, 2022 at 11:51:04AM +0000, Conor.Dooley at microchip.com wrote:
> On 19/07/2022 12:41, Catalin Marinas wrote:
> > On Fri, Jul 15, 2022 at 06:51:55PM +0100, Conor Dooley wrote:
> >> From: Conor Dooley <conor.dooley at microchip.com>
> >>
> >> 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: stable at vger.kernel.org
> > 
> > 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.
> 
> I guess a PR might be the easiest way for it anyway, so that both
> yourself and Palmer could merge it?

I guess so, a stable branch would do. Note that Will is handling the
upcoming merging window.

-- 
Catalin