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Message-ID: <80e2962e-0aa6-c939-8f69-8f0cda988cbe@intel.com>
Date:   Fri, 31 Mar 2023 16:29:21 -0700
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Subject: Re: [PATCH v3 15/19] x86/resctrl: Add helpers for system wide
 mon/alloc capable
Content-Language: en-US
To:     James Morse <james.morse@arm.com>, <x86@kernel.org>,
        <linux-kernel@vger.kernel.org>
CC:     Fenghua Yu <fenghua.yu@intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        H Peter Anvin <hpa@zytor.com>,
        Babu Moger <Babu.Moger@amd.com>,
        <shameerali.kolothum.thodi@huawei.com>,
        D Scott Phillips OS <scott@os.amperecomputing.com>,
        <carl@os.amperecomputing.com>, <lcherian@marvell.com>,
        <bobo.shaobowang@huawei.com>, <tan.shaopeng@fujitsu.com>,
        <xingxin.hx@openanolis.org>, <baolin.wang@linux.alibaba.com>,
        Jamie Iles <quic_jiles@quicinc.com>,
        Xin Hao <xhao@linux.alibaba.com>, <peternewman@google.com>
References: <20230320172620.18254-1-james.morse@arm.com>
 <20230320172620.18254-16-james.morse@arm.com>
From:   Reinette Chatre <reinette.chatre@intel.com>
In-Reply-To: <20230320172620.18254-16-james.morse@arm.com>
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Hi James,

On 3/20/2023 10:26 AM, James Morse wrote:
> resctrl reads rdt_alloc_capable or rdt_mon_capable to determine
> whether any of the resources support the corresponding features.
> resctrl also uses the static-keys that affect the architecture's
> context-switch code to determine the same thing.

hmmm ... they are not the same though since the static-keys
in addition means that resctrl is mounted.

Reinette