Re: [Xen-devel] Proxying Hyper-V hypercalls from L2 to L0

2020-01-08 Thread Roger Pau Monné
On Tue, Dec 31, 2019 at 04:09:09PM +, Wei Liu wrote: > On Mon, 30 Dec 2019 at 16:24, Wei Liu wrote: > > > > Hi all > > > > As much as I try to avoid writing code to proxy Hyper-V hypercalls, it > > seems unavoidable for PV guests, because Hyper-V requires hypercalls > > to be issued with CPL=0

Re: [Xen-devel] Proxying Hyper-V hypercalls from L2 to L0

2019-12-31 Thread Wei Liu
On Mon, 30 Dec 2019 at 16:24, Wei Liu wrote: > > Hi all > > As much as I try to avoid writing code to proxy Hyper-V hypercalls, it > seems unavoidable for PV guests, because Hyper-V requires hypercalls > to be issued with CPL=0. > > This means for PV Dom0 I will need to add code in Xen to support

[Xen-devel] Proxying Hyper-V hypercalls from L2 to L0

2019-12-30 Thread Wei Liu
Hi all As much as I try to avoid writing code to proxy Hyper-V hypercalls, it seems unavoidable for PV guests, because Hyper-V requires hypercalls to be issued with CPL=0. This means for PV Dom0 I will need to add code in Xen to support Hyper-V's ABIs, along with appropriate validations. How muc