Re: [Xen-devel] [PATCH v2 01/10] x86/msr: Offer CPUID Faulting to PVH control domains

2019-09-16 Thread Jan Beulich
On 13.09.2019 21:27, Andrew Cooper wrote: > The control domain exclusion for CPUID Faulting predates dom0 PVH, but the > reason for the exclusion (to allow the domain builder to see host CPUID > values) isn't applicable. > > The domain builder *is* broken in PVH control domains, and restricting

[Xen-devel] [PATCH v2 01/10] x86/msr: Offer CPUID Faulting to PVH control domains

2019-09-13 Thread Andrew Cooper
The control domain exclusion for CPUID Faulting predates dom0 PVH, but the reason for the exclusion (to allow the domain builder to see host CPUID values) isn't applicable. The domain builder *is* broken in PVH control domains, and restricting the use of CPUID Faulting doesn't make it any less