Liu, Eric E wrote:
> >From 41d65b55580d3f07f9f1c50e89e3d64c5d10fbaf Mon Sep 17 00:00:00 2001
> From: Feng (Eric) Liu <[EMAIL PROTECTED]>
> Date: Tue, 1 Apr 2008 07:26:14 -0400
> Subject: [PATCH] KVM: Add kvm trace support. when config KVM_TRACE, it
> allows userspace app to read the trace of kvm_related
> events through the relayfs.
>
>
> +int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
> +{
> + void __user *argp = (void __user *)arg;
> + long r = -EINVAL;
> +
> + switch (ioctl) {
> + case KVM_TRACE_ENABLE:
> + r = kvm_trace_enable(argp);
> + break;
> + case KVM_TRACE_DISABLE:
> + r = 0;
> + kvm_trace_cleanup();
> + break;
> + }
> +
> + return r;
> +}
>
Since we want to allow non-privileged users to open /dev/kvm, and
tracing can provide data on other users' VMs, we need check on
CAP_SYS_ADMIN (or maybe CAP_PTRACE?) and return -EPERM if the user is
not privileged enough.
--
error compiling committee.c: too many arguments to function
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