Re: [Xen-devel] RFC: HVM de-privileged mode scheduling considerations

2015-08-11 Thread Ben Catterall
On 04/08/15 14:46, George Dunlap wrote: On Mon, Aug 3, 2015 at 3:34 PM, Ian Campbell wrote: On Mon, 2015-08-03 at 14:54 +0100, Andrew Cooper wrote: On 03/08/15 14:35, Ben Catterall wrote: Hi all, I am working on an x86 proof-of-concept to evaluate if it is feasible to move device models an

Re: [Xen-devel] RFC: HVM de-privileged mode scheduling considerations

2015-08-04 Thread George Dunlap
On Mon, Aug 3, 2015 at 3:34 PM, Ian Campbell wrote: > On Mon, 2015-08-03 at 14:54 +0100, Andrew Cooper wrote: >> On 03/08/15 14:35, Ben Catterall wrote: >> > Hi all, >> > >> > I am working on an x86 proof-of-concept to evaluate if it is feasible >> > to move device models and x86 emulation code fo

Re: [Xen-devel] RFC: HVM de-privileged mode scheduling considerations

2015-08-03 Thread Dario Faggioli
On Mon, 2015-08-03 at 15:34 +0100, Ian Campbell wrote: > On Mon, 2015-08-03 at 14:54 +0100, Andrew Cooper wrote: > > I think it would be entirely reasonable to have a deadline for a single > > execution of depriv mode, after which the domain is declared malicious > > and killed. > > I think this

Re: [Xen-devel] RFC: HVM de-privileged mode scheduling considerations

2015-08-03 Thread Ian Campbell
On Mon, 2015-08-03 at 14:54 +0100, Andrew Cooper wrote: > On 03/08/15 14:35, Ben Catterall wrote: > > Hi all, > > > > I am working on an x86 proof-of-concept to evaluate if it is feasible > > to move device models and x86 emulation code for HVM guests into a > > de-privileged context. > > > > I w

Re: [Xen-devel] RFC: HVM de-privileged mode scheduling considerations

2015-08-03 Thread Andrew Cooper
On 03/08/15 14:35, Ben Catterall wrote: > Hi all, > > I am working on an x86 proof-of-concept to evaluate if it is feasible > to move device models and x86 emulation code for HVM guests into a > de-privileged context. > > I was hoping to get feedback from relevant maintainers on scheduling > consid

[Xen-devel] RFC: HVM de-privileged mode scheduling considerations

2015-08-03 Thread Ben Catterall
Hi all, I am working on an x86 proof-of-concept to evaluate if it is feasible to move device models and x86 emulation code for HVM guests into a de-privileged context. I was hoping to get feedback from relevant maintainers on scheduling considerations for this system to mitigate potential Do