linux-kernel - Re: [PATCH v7 8/9] x86/cpufeatures: Mark ENQCMD as disabled when configured out

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Message-ID: <20200907102935.GA16029@zn.tnic>
Date:   Mon, 7 Sep 2020 12:29:35 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Fenghua Yu <fenghua.yu@...el.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, H Peter Anvin <hpa@...or.com>,
        Andy Lutomirski <luto@...nel.org>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Christoph Hellwig <hch@...radead.org>,
        Peter Zijlstra <peterz@...radead.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Tony Luck <tony.luck@...el.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Jacob Jun Pan <jacob.jun.pan@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Sohil Mehta <sohil.mehta@...el.com>,
        Ravi V Shankar <ravi.v.shankar@...el.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        x86 <x86@...nel.org>, iommu@...ts.linux-foundation.org
Subject: Re: [PATCH v7 8/9] x86/cpufeatures: Mark ENQCMD as disabled when
 configured out

On Thu, Aug 27, 2020 at 08:06:33AM -0700, Fenghua Yu wrote:
> Currently the ENQCMD feature cannot be used if CONFIG_INTEL_IOMMU_SVM
> is not set.

IOW,

"Currently, the ENQCMD feature depends on CONFIG_INTEL_IOMMU_SVM."

?

No need for a "cannot ... if not" formulation.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette