Thanks Masami, the patch is already in our queue for going upstream.
On Fri, 9 Oct 2020, Masami Hiramatsu wrote:
> Use per_cpu_ptr_to_phys() instead of virt_to_phys() and __pa()
> for per-cpu address conversion.
>
> In xen_starting_cpu(), per-cpu xen_vcpu_info address is converted
> to gfn by
Use per_cpu_ptr_to_phys() instead of virt_to_phys() and __pa()
for per-cpu address conversion.
In xen_starting_cpu(), per-cpu xen_vcpu_info address is converted
to gfn by virt_to_gfn() macro. However, since the virt_to_gfn(v)
assumes the given virtual address is in linear mapped kernel memory
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