Re: [Xen-devel] [PATCH RFC 09/14] xen: vmx: Introduce a Hyper call to set subpage

2017-10-20 Thread Yi Zhang
On 2017-10-19 at 12:34:07 -0600, Tamas K Lengyel wrote: > On Thu, Oct 19, 2017 at 2:13 AM, Zhang Yi wrote: > > From: Zhang Yi Z > > > > The Hypercall is defined as HVMOP_set_subpage > > Are there any expected use-cases where a HVM guest would need access > to this hypercall? Is spp compatible wi

Re: [Xen-devel] [PATCH RFC 09/14] xen: vmx: Introduce a Hyper call to set subpage

2017-10-19 Thread Tamas K Lengyel
On Thu, Oct 19, 2017 at 2:13 AM, Zhang Yi wrote: > From: Zhang Yi Z > > The Hypercall is defined as HVMOP_set_subpage Are there any expected use-cases where a HVM guest would need access to this hypercall? Is spp compatible with #VE? If not, I think it would be better to integrate this with the

[Xen-devel] [PATCH RFC 09/14] xen: vmx: Introduce a Hyper call to set subpage

2017-10-19 Thread Zhang Yi
From: Zhang Yi Z The Hypercall is defined as HVMOP_set_subpage And the Interface's parameters is defined as struct xen_hvm_subpage { domid_t domid; uint32_t access_map; uint64_t gfn; } The user application: xl, or some other security control daemon. will set the protection bitmap