Re: [Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged

2016-07-08 Thread Tim Deegan
Beulich > > Subject: Re: [Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged > > > > On 05/07/16 12:22, Anthony PERARD wrote: > > > Hi, > > > > > > I've taken over the work from Ben to have a deprivileged mode in the > > > hypervisor, but

Re: [Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged

2016-07-06 Thread Paul Durrant
> -Original Message- > From: Xen-devel [mailto:xen-devel-boun...@lists.xen.org] On Behalf Of > Andrew Cooper > Sent: 05 July 2016 18:26 > To: Anthony Perard; xen-devel@lists.xen.org; Jan Beulich > Subject: Re: [Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged >

Re: [Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged

2016-07-05 Thread Andrew Cooper
On 05/07/16 12:22, Anthony PERARD wrote: > Hi, > > I've taken over the work from Ben to have a deprivileged mode in the > hypervisor, but I'm unsure about which direction to take. You should begin with an evaluation of available options, identifying which issues are mitigated, those which are not,

Re: [Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged

2016-07-05 Thread Anthony PERARD
On Tue, Jul 05, 2016 at 01:58:16PM +0100, George Dunlap wrote: > On Tue, Jul 5, 2016 at 12:22 PM, Anthony PERARD > wrote: > > Hi, > > > > I've taken over the work from Ben to have a deprivileged mode in the > > hypervisor, but I'm unsure about which direction to take. > > > > First, after understa

Re: [Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged

2016-07-05 Thread Anthony PERARD
On Tue, Jul 05, 2016 at 07:02:39AM -0600, Jan Beulich wrote: > >>> On 05.07.16 at 13:22, wrote: > > Hi, > > > > I've taken over the work from Ben to have a deprivileged mode in the > > hypervisor, but I'm unsure about which direction to take. > > > > First, after understanding what have been don

Re: [Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged

2016-07-05 Thread Jan Beulich
>>> On 05.07.16 at 13:22, wrote: > Hi, > > I've taken over the work from Ben to have a deprivileged mode in the > hypervisor, but I'm unsure about which direction to take. > > First, after understanding what have been done, and fixing a few things, > I did some benchmark to compare a simple "dev

Re: [Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged

2016-07-05 Thread George Dunlap
On Tue, Jul 5, 2016 at 12:22 PM, Anthony PERARD wrote: > Hi, > > I've taken over the work from Ben to have a deprivileged mode in the > hypervisor, but I'm unsure about which direction to take. > > First, after understanding what have been done, and fixing a few things, > I did some benchmark to c

[Xen-devel] [RFC] Hypervisor, x86 emulation deprivileged

2016-07-05 Thread Anthony PERARD
Hi, I've taken over the work from Ben to have a deprivileged mode in the hypervisor, but I'm unsure about which direction to take. First, after understanding what have been done, and fixing a few things, I did some benchmark to compare a simple "device" running in ring0 to the same one running in