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Message-ID: <20191001082321.GL4519@hirez.programming.kicks-ass.net>
Date:   Tue, 1 Oct 2019 10:23:21 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Like Xu <like.xu@...ux.intel.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        rkrcmar@...hat.com, sean.j.christopherson@...el.com,
        vkuznets@...hat.com, Jim Mattson <jmattson@...gle.com>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        ak@...ux.intel.com, wei.w.wang@...el.com, kan.liang@...el.com,
        like.xu@...el.com, ehankland@...gle.com, arbel.moshe@...cle.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] KVM: x86/vPMU: Add lazy mechanism to release
 perf_event per vPMC

On Mon, Sep 30, 2019 at 03:22:57PM +0800, Like Xu wrote:
> +	union {
> +		u8 event_count :7; /* the total number of created perf_events */
> +		bool enable_cleanup :1;

That's atrocious, don't ever create a bitfield with base _Bool.

> +	} state;

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