From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH 3/3] kvm-s390: implement KVM_CAP_MAX_VCPUS
Date: Tue, 24 Apr 2012 15:06:12 +0300
Message-ID: <4F969734.6080401@redhat.com>
References: <1335252285-54213-1-git-send-email-borntraeger@de.ibm.com> <1335252285-54213-4-git-send-email-borntraeger@de.ibm.com>
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Cc: Marcelo Tossati <mtosatti@redhat.com>,
	Carsten Otte <cotte@de.ibm.com>,
	Alexander Graf <agraf@suse.de>,
	Jens Freimann <jfrei@linux.vnet.ibm.com>,
	Cornelia Huck <cornelia.huck@de.ibm.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Heinz Graalfs <graalfs@linux.vnet.ibm.com>,
	KVM <kvm@vger.kernel.org>
To: Christian Borntraeger <borntraeger@de.ibm.com>
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On 04/24/2012 10:24 AM, Christian Borntraeger wrote:
> Let userspace know the number of supported cpus fro kvm.
>
> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
> ---
>  arch/s390/kvm/kvm-s390.c |    3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
> index fd98914..0054cb0 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -136,6 +136,9 @@ int kvm_dev_ioctl_check_extension(long ext)
>  	case KVM_CAP_SYNC_REGS:
>  		r = 1;
>  		break;
> +	case KVM_CAP_NR_VCPUS:
> +		r = KVM_MAX_VCPUS;
> +		break;
>  	default:
>  		r = 0;
>  	}

This looks like a bugfix, but having survived so long without it, I
imagine it's not urgent for 3.4.

btw, a better place might be in kvm_devel_ioctl_check_extension_generic().

-- 
error compiling committee.c: too many arguments to function