Re: [Qemu-devel] [PATCH v2 2/2] Xen: Use the ioreq-server API when available

2014-10-13 Thread Paul Durrant
> -Original Message- > From: Stefano Stabellini [mailto:stefano.stabell...@eu.citrix.com] > Sent: 13 October 2014 16:53 > To: Paul Durrant > Cc: qemu-devel@nongnu.org; xen-de...@lists.xenproject.org; Stefano > Stabellini; Peter Maydell; Paolo Bonzini; Michael Tokarev; Stefan Hajnoczi; > Ste

Re: [Qemu-devel] [PATCH v2 2/2] Xen: Use the ioreq-server API when available

2014-10-13 Thread Stefano Stabellini
On Mon, 13 Oct 2014, Paul Durrant wrote: > The ioreq-server API added to Xen 4.5 offers better security than > the existing Xen/QEMU interface because the shared pages that are > used to pass emulation request/results back and forth are removed > from the guest's memory space before any requests ar

[Qemu-devel] [PATCH v2 2/2] Xen: Use the ioreq-server API when available

2014-10-13 Thread Paul Durrant
The ioreq-server API added to Xen 4.5 offers better security than the existing Xen/QEMU interface because the shared pages that are used to pass emulation request/results back and forth are removed from the guest's memory space before any requests are serviced. This prevents the guest from mapping