linux-kernel - Re: [PATCH v8 1/8] x86/resctrl: Prepare for new domain scope

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Message-ID: <CALPaoCg7ov97uSKk8K4O5_GFKvnHSCSK79g-boPMQKhziS49hw@mail.gmail.com>
Date:   Thu, 5 Oct 2023 16:27:53 +0200
From:   Peter Newman <peternewman@...gle.com>
To:     Tony Luck <tony.luck@...el.com>
Cc:     Fenghua Yu <fenghua.yu@...el.com>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Jonathan Corbet <corbet@....net>,
        Shuah Khan <skhan@...uxfoundation.org>, x86@...nel.org,
        Shaopeng Tan <tan.shaopeng@...itsu.com>,
        James Morse <james.morse@....com>,
        Jamie Iles <quic_jiles@...cinc.com>,
        Babu Moger <babu.moger@....com>,
        Randy Dunlap <rdunlap@...radead.org>,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        patches@...ts.linux.dev
Subject: Re: [PATCH v8 1/8] x86/resctrl: Prepare for new domain scope

On Tue, Oct 3, 2023 at 11:30 PM Tony Luck <tony.luck@...el.com> wrote:
> diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> index 725344048f85..04c164f6d39d 100644
> --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> @@ -1345,10 +1345,13 @@ unsigned int rdtgroup_cbm_to_size(struct rdt_resource *r,
>         unsigned int size = 0;
>         int num_b, i;
>
> +       if (WARN_ON_ONCE(r->scope != RESCTRL_L2_CACHE && r->scope != RESCTRL_L3_CACHE))
> +               return size;

Thanks!

Reviewed-by: Peter Newman <peternewman@...gle.com>