Re: [PATCH v5 05/10] powerpc/smp: Dont assume l2-cache to be superset of sibling

2020-09-13 Thread Satheesh Rajendran
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 > >

Re: [PATCH v5 05/10] powerpc/smp: Dont assume l2-cache to be superset of sibling

2020-09-13 Thread Srikar Dronamraju
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

Re: [PATCH v5 05/10] powerpc/smp: Dont assume l2-cache to be superset of sibling

2020-09-13 Thread Srikar Dronamraju
* 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. > >> > > >> >

Re: [PATCH v5 05/10] powerpc/smp: Dont assume l2-cache to be superset of sibling

2020-09-12 Thread Michael Ellerman
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

Re: [PATCH v5 05/10] powerpc/smp: Dont assume l2-cache to be superset of sibling

2020-09-11 Thread Srikar Dronamraju
* 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

Re: [PATCH v5 05/10] powerpc/smp: Dont assume l2-cache to be superset of sibling

2020-09-11 Thread Michael Ellerman
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: [

[PATCH v5 05/10] powerpc/smp: Dont assume l2-cache to be superset of sibling

2020-08-10 Thread Srikar Dronamraju
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