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Subject: Re: [PATCH] kvm_host: unify VM_STAT and VCPU_STAT definitions in a
 single place
To:     Paolo Bonzini <pbonzini@redhat.com>,
        =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= <f4bug@amsat.org>,
        kvm@vger.kernel.org
Cc:     Marc Zyngier <maz@kernel.org>, James Morse <james.morse@arm.com>,
        Julien Thierry <julien.thierry.kdev@gmail.com>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Paul Mackerras <paulus@ozlabs.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Christian Borntraeger <borntraeger@de.ibm.com>,
        Janosch Frank <frankja@linux.ibm.com>,
        David Hildenbrand <david@redhat.com>,
        Cornelia Huck <cohuck@redhat.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>,
        linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu,
        linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
        kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
        linux-s390@vger.kernel.org
References: <20200413140332.22896-1-eesposit@redhat.com>
 <03a481a8-bcf2-8755-d113-71ef393508bf@amsat.org>
 <bf870876-9f9a-7ba8-d941-a3883e519eed@redhat.com>
From:   Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-ID: <a5e9246e-2bf3-204e-b79b-0ed4c40fcc5d@redhat.com>
Date:   Tue, 14 Apr 2020 17:57:02 +0200
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On 4/14/20 10:18 AM, Paolo Bonzini wrote:
> On 13/04/20 23:34, Philippe Mathieu-Daudé wrote:
>>> +#define VM_STAT(x, ...) offsetof(struct kvm, stat.x), KVM_STAT_VM, ## __VA_ARGS__
>>> +#define VCPU_STAT(x, ...) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ## __VA_ARGS__
>> I find this macro expanding into multiple fields odd... Maybe a matter
>> of taste. Sugggestion, have the macro define the full structure, as in
>> the arm64 arch:
>>
>> #define VM_STAT(n, x, ...) { n, offsetof(struct kvm, stat.x),
>> KVM_STAT_VM, ## __VA_ARGS__ }
>>
>> Ditto for VCPU_STAT().
>>
Hi Philippe and Paolo,
> 
> Yes, that's a good idea.  Emanuele, can you switch it to this format?

Sure, I just submitted the v2 version.

Thanks,

Emanuele