init 5.10_rt with nkio nkmcu

hc

2023-12-06 d38611ca164021d018c1b23eee65bbebc09c63e0

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#include <xen/arm/page.h>
#include <asm/mmu.h>
 
static inline bool xen_kernel_unmapped_at_usr(void)
{
    return arm64_kernel_unmapped_at_el0();
}