On Fri, Sep 11, 2020 at 09:55:23PM +1000, Michael Ellerman wrote:
> Srikar Dronamraju writes:
> > Current code assumes that cpumask of cpus sharing a l2-cache mask will
> > always be a superset of cpu_sibling_mask.
> >
> > Lets stop that assumption. cpu_l2_cache_mask is a superset of
> > cpu_sibli
Fix to make it work where CPUs dont have a l2-cache element.
>8-8<-
>From b25d47b01b7195b1df19083a4043fa6a87a901a3 Mon Sep 17 00:00:00 2001
From: Srikar Dronamraju
Date: Thu, 9 Jul 2020 13:33:38 +0530
Subject: [PATCH v5.2 05
* Michael Ellerman [2020-09-13 11:46:41]:
> Srikar Dronamraju writes:
> > * Michael Ellerman [2020-09-11 21:55:23]:
> >
> >> Srikar Dronamraju writes:
> >> > Current code assumes that cpumask of cpus sharing a l2-cache mask will
> >> > always be a superset of cpu_sibling_mask.
> >> >
> >> > Le
Srikar Dronamraju writes:
> * Michael Ellerman [2020-09-11 21:55:23]:
>
>> Srikar Dronamraju writes:
>> > Current code assumes that cpumask of cpus sharing a l2-cache mask will
>> > always be a superset of cpu_sibling_mask.
>> >
>> > Lets stop that assumption. cpu_l2_cache_mask is a superset of
* Michael Ellerman [2020-09-11 21:55:23]:
> Srikar Dronamraju writes:
> > Current code assumes that cpumask of cpus sharing a l2-cache mask will
> > always be a superset of cpu_sibling_mask.
> >
> > Lets stop that assumption. cpu_l2_cache_mask is a superset of
> > cpu_sibling_mask if and only if
Srikar Dronamraju writes:
> Current code assumes that cpumask of cpus sharing a l2-cache mask will
> always be a superset of cpu_sibling_mask.
>
> Lets stop that assumption. cpu_l2_cache_mask is a superset of
> cpu_sibling_mask if and only if shared_caches is set.
I'm seeing oopses with this:
[
Current code assumes that cpumask of cpus sharing a l2-cache mask will
always be a superset of cpu_sibling_mask.
Lets stop that assumption. cpu_l2_cache_mask is a superset of
cpu_sibling_mask if and only if shared_caches is set.
Cc: linuxppc-dev
Cc: LKML
Cc: Michael Ellerman
Cc: Nicholas Piggi
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