Re: [Xen-devel] [PATCH RFC v2 12/12] x86: activate per-vcpu stacks in case of xpti

>>> On 30.01.18 at 18:33, wrote: > On 30/01/18 17:33, Jan Beulich wrote: > On 22.01.18 at 13:32, wrote: >>> --- a/xen/arch/x86/domain.c >>> +++ b/xen/arch/x86/domain.c >>> @@ -1585,9 +1585,28 @@ static inline bool need_full_gdt(const struct domain >>> *d)

Re: [Xen-devel] [PATCH RFC v2 12/12] x86: activate per-vcpu stacks in case of xpti

On 30/01/18 17:33, Jan Beulich wrote: On 22.01.18 at 13:32, wrote: >> When scheduling a vcpu subject to xpti activate the per-vcpu stacks >> by loading the vcpu specific gdt and tss. When de-scheduling such a >> vcpu switch back to the per physical cpu gdt and tss. >> >>

Re: [Xen-devel] [PATCH RFC v2 12/12] x86: activate per-vcpu stacks in case of xpti

>>> On 22.01.18 at 13:32, wrote: > When scheduling a vcpu subject to xpti activate the per-vcpu stacks > by loading the vcpu specific gdt and tss. When de-scheduling such a > vcpu switch back to the per physical cpu gdt and tss. > > Accessing the user registers on the stack is