(Responding from the beach ;) I've already done a good portion of what is being discussed here in my pvio series. Please review it and give me your feedback.
For instance, you will see the single hypercall passing the channel id down. -----Original Message----- From: Avi Kivity <[EMAIL PROTECTED]> Cc: kvm-devel <[EMAIL PROTECTED]> To: Anthony Liguori <[EMAIL PROTECTED]> Sent: 8/27/2007 10:47:22 AM Subject: Re: [kvm-devel] Userspace hypercalls? Avi Kivity wrote: > > Thinking a little more about this, it isn't about handling hypercalls > in userspace, but about handling a virtio sync() in userspace. > > So how about having a KVM_HC_WAKE_CHANNEL hypercall (similar to Xen's > event channel, but assymetric) that has a channel parameter. The > kernel handler for that hypercall dispatches calls to either a kernel > handler or a userspace handler. That means we don't need a separate > ETH_SEND, ETH_RECEIVE, or BLOCK_SEND hypercalls. And thinking a tiny little bit more about this, we can have the kernel (optionally) fire an eventfd, so a separate userspace thread or process can be woken up to service the device, without a heavyweight exit. -- Any sufficiently difficult bug is indistinguishable from a feature. ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
