From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH] KVM: Add compat ioctl for KVM_SET_SIGNAL_MASK
Date: Tue, 7 Jun 2011 22:52:36 +0200
Message-ID: <201106072252.36636.arnd@arndb.de>
References: <1307478315-15564-1-git-send-email-agraf@suse.de>
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Cc: KVM list <kvm@vger.kernel.org>, kvm-ppc@vger.kernel.org
To: Alexander Graf <agraf@suse.de>
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On Tuesday 07 June 2011 22:25:15 Alexander Graf wrote:
> +static long kvm_vcpu_compat_ioctl(struct file *filp,
> +                                 unsigned int ioctl, unsigned long arg)
> +{
> +       struct kvm_vcpu *vcpu = filp->private_data;
> +       void __user *argp = (void __user *)arg;

Converting a compat user argument into a pointer should use the
compat_ptr() function to do the right thing on s390. Otherwise
your patch looks good.

	Arnd