Comments on: Xen Books: The Definitive Guide to the Xen Hypervisor http://blog.xen.org/index.php/2008/03/13/xen-books-the-definitive-guide-to-the-xen-hypervisor/ Community Blog Mon, 13 May 2013 10:17:52 +0000 hourly 1 By: My Xen Log » Blog Archive » I’m still alive http://blog.xen.org/index.php/2008/03/13/xen-books-the-definitive-guide-to-the-xen-hypervisor/comment-page-1/#comment-83 My Xen Log » Blog Archive » I’m still alive Fri, 27 Jun 2008 05:12:34 +0000 http://blog.xen.org/index.php/2008/03/13/xen-books-the-definitive-guide-to-the-xen-hypervisor/#comment-83 [...] subscribe to’ for anyone who is serious about development with xen and a newish book, ‘The Definitive Guide to the Xen Hypervisor‘ by David Chisnall. It’s a brilliant book for anyone looking to get a basic inside to [...] [...] subscribe to’ for anyone who is serious about development with xen and a newish book, ‘The Definitive Guide to the Xen Hypervisor‘ by David Chisnall. It’s a brilliant book for anyone looking to get a basic inside to [...]

]]> By: Mark Williamson http://blog.xen.org/index.php/2008/03/13/xen-books-the-definitive-guide-to-the-xen-hypervisor/comment-page-1/#comment-8 Mark Williamson Sun, 16 Mar 2008 18:25:21 +0000 http://blog.xen.org/index.php/2008/03/13/xen-books-the-definitive-guide-to-the-xen-hypervisor/#comment-8 > Is this information up to date? I thought ring buffers were going > away due to the inefficiencies. I’d gladly buy a Xen book if I > didn’t feel much of the information would be too old. Which ring buffers? Ring buffers in general are here to stay in Xen as they're an efficient way of doing asynchronous shared memory communication. In some places the drivers are being restructured with respect to ring buffers (e.g. I think the netchannel2 work is using a different ring buffer set up to the original virtual network). In other places the type of data passed by the rings may be changed to improve efficiency. But device driver shared memory rings themselves are a Good Thing and, as far as I'm aware, will stay in the code forever. Hope that helps, Cheers, Mark > Is this information up to date? I thought ring buffers were going
> away due to the inefficiencies. I’d gladly buy a Xen book if I
> didn’t feel much of the information would be too old.

Which ring buffers? Ring buffers in general are here to stay in Xen as they’re an efficient way of doing asynchronous shared memory communication.

In some places the drivers are being restructured with respect to ring buffers (e.g. I think the netchannel2 work is using a different ring buffer set up to the original virtual network). In other places the type of data passed by the rings may be changed to improve efficiency. But device driver shared memory rings themselves are a Good Thing and, as far as I’m aware, will stay in the code forever.

Hope that helps,
Cheers,
Mark

]]> By: TomMD http://blog.xen.org/index.php/2008/03/13/xen-books-the-definitive-guide-to-the-xen-hypervisor/comment-page-1/#comment-7 TomMD Sun, 16 Mar 2008 18:15:30 +0000 http://blog.xen.org/index.php/2008/03/13/xen-books-the-definitive-guide-to-the-xen-hypervisor/#comment-7 Is this information up to date? I thought ring buffers were going away due to the inefficiencies. I'd gladly buy a Xen book if I didn't feel much of the information would be too old. FWIW, icing on the Xen book cake (to me) would be XSM, mini-os, vTPM, shim domains (cool!), and clean descriptions of the existing and proposed IVC methods. yeah, I know, most these either don't exist yet or barely exist :-(. Is this information up to date? I thought ring buffers were going away due to the inefficiencies. I’d gladly buy a Xen book if I didn’t feel much of the information would be too old.

FWIW, icing on the Xen book cake (to me) would be XSM, mini-os, vTPM, shim domains (cool!), and clean descriptions of the existing and proposed IVC methods. yeah, I know, most these either don’t exist yet or barely exist :-( .

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