linux-kernel - Re: [PATCH v3] perf/x86/amd: Don't touch the Host-only bit inside the guest hypervisor

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Date:   Fri, 18 Mar 2022 19:50:45 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Dongli Si <kvmx86@...il.com>
Cc:     acme@...nel.org, alexander.shishkin@...ux.intel.com,
        dave.hansen@...ux.intel.com, hpa@...or.com, joerg.roedel@....com,
        jolsa@...nel.org, kim.phillips@....com, liam.merwick@...cle.com,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        mark.rutland@....com, mingo@...nel.org, namhyung@...nel.org,
        peterz@...radead.org, tglx@...utronix.de, x86@...nel.org
Subject: Re: [PATCH v3] perf/x86/amd: Don't touch the Host-only bit inside
 the guest hypervisor

On Fri, Mar 18, 2022 at 11:07:57AM +0800, Dongli Si wrote:
> Hi Borislav, this is just to more clearly test if the current kernel is
> running directly on the host.
> 
> If this is redundant, I can remove this "wrapper" and resend the patch,
> the v4 patch code will be the same as the v1 patch.

Yes please. Using

	hypervisor_is_type(X86_HYPER_NATIVE)

directly is a lot more descriptive than "run_as_host".

Thx.

-- 
Regards/Gruss,
    Boris.

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