From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
linmiaohe@huawei.com, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Subject: Re: [PATCH] KVM: X86: correct meaningless kvm_apicv_activated() check
Date: Mon, 16 Mar 2020 08:26:50 -0700 [thread overview]
Message-ID: <20200316152650.GD24267@linux.intel.com> (raw)
In-Reply-To: <878sk0n1g1.fsf@vitty.brq.redhat.com>
On Mon, Mar 16, 2020 at 09:33:50AM +0100, Vitaly Kuznetsov wrote:
> Paolo Bonzini <pbonzini@redhat.com> writes:
> > + if ((old == 0) == (new == 0))
> > + return;
>
> This is a very laconic expression I personally find hard to read :-)
>
> /* Check if WE actually changed APICv state */
> if ((!old && !new) || (old && new))
> return;
>
> would be my preference (not strong though, I read yours several times
> and now I feel like I understand it just fine :-)
Or maybe this to avoid so many equals signs?
if (!old == !new)
return;
next prev parent reply other threads:[~2020-03-16 15:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-14 11:31 [PATCH] KVM: X86: correct meaningless kvm_apicv_activated() check Paolo Bonzini
2020-03-16 8:33 ` Vitaly Kuznetsov
2020-03-16 15:26 ` Sean Christopherson [this message]
2020-03-16 15:44 ` Vitaly Kuznetsov
2020-03-16 15:59 ` Sean Christopherson
2020-03-16 16:39 ` Paolo Bonzini
2020-03-17 11:24 ` Xiaoyao Li
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