linux-kernel - Re: [PATCH V2 01/10] x86/CPU: Expose if cache is inclusive of lower level caches

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Message-ID: <20190806155716.GE25897@zn.tnic>
Date:   Tue, 6 Aug 2019 17:57:16 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Reinette Chatre <reinette.chatre@...el.com>
Cc:     tglx@...utronix.de, fenghua.yu@...el.com, tony.luck@...el.com,
        kuo-lang.tseng@...el.com, mingo@...hat.com, hpa@...or.com,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 01/10] x86/CPU: Expose if cache is inclusive of lower
 level caches

On Mon, Aug 05, 2019 at 10:57:04AM -0700, Reinette Chatre wrote:
> What do you think?

Actually, I was thinking about something a lot simpler: something
along the lines of adding the CPUID check in a helper function which
rdt_pseudo_lock_init() calls. If the cache is not inclusive - and my
guess is it would suffice to check any cache but I'd prefer you correct
me on that - you simply return error and rdt_pseudo_lock_init() returns
early without doing any futher init.

How does that sound?

Thx.

-- 
Regards/Gruss,
    Boris.

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