linux-kernel - Re: [PATCH v11 04/13] x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag

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Date:   Tue, 24 Jan 2023 10:06:00 -0600
From:   "Moger, Babu" <babu.moger@....com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     "Luck, Tony" <tony.luck@...el.com>,
        "corbet@....net" <corbet@....net>,
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Subject: Re: [PATCH v11 04/13] x86/cpufeatures: Add Bandwidth Monitoring Event
 Configuration feature flag


On 1/24/23 09:10, Borislav Petkov wrote:
> On Tue, Jan 24, 2023 at 08:11:21AM -0600, Moger, Babu wrote:
>> Understood. I am planning to add resctrl feature list inside
>> /sys/fs/resctrl/info/ in my next series.
> Maybe I wasn't as clear as I hoped for:
>
> so you have a couple of flags in /proc/cpuinfo which are actively being used by
> tools.
Those flags will be there. Not planning to remove them.
>
> Why would you want to move the flags somewhere else and do the extra work for no
> apparent reason?

With this series(v12) we have added two new cpuid features(SMBA and BMEC).

But these features are not visible in /proc/cpuinfo. Planning to add them
in /sys/fs/resctrl/info.

So, users can see them here. 

>
>> We need to add all the resctrl feature bits in info directory.
> What for?

Same reason as above.

Thanks

Babu