Re: PROBLEM: Only one CPU active on Ultra 60 since ~4.8 (regression)

From: Sam Ravnborg
Date: Sat Mar 30 2024 - 05:17:22 EST


On Fri, Mar 29, 2024 at 04:11:06PM -0400, Nick Bowler wrote:
> Hi Sam,
>
> On 2024-03-29 05:44, Sam Ravnborg wrote:
> > I took a look at this and may have a fix. Could you try the following
> > patch. It builds - but I have not tested it.
>
> With this patch applied on top of 6.9-rc1, both CPUs appear to come up:
>
> % cat /proc/cpuinfo
> [...]
> ncpus probed : 2
> ncpus active : 2
> [...]
> State:
> CPU0: online
> CPU2: online

Thanks, I will add a Tested-by: Nick Bowler <nbowler@xxxxxxxxxx>
and submit the patch properly along with a few other sparc64 related
fixes.

Sam