Re: [Xen-devel] [PATCH v2 4/9] x86/vmx: Support remote access to the MSR lists

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 08.06.18 at 20:48, <andrew.cooper3@xxxxxxxxxx> wrote:
> At the moment, all modifications of the MSR lists are in current context.
> However, future changes may need to put MSR_EFER into the lists from domctl
> hypercall context.
> 
> Plumb a struct vcpu parameter down through the infrastructure, and use
> vmx_vmcs_{enter,exit}() for safe access to the VMCS in vmx_add_msr().  Use
> assertions to ensure that access is either in current context, or while the
> vcpu is paused.
> 
> Note these expectations beside the fields in arch_vmx_struct, and reorder the
> fields to avoid unnecessary padding.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>



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