On 05.07.2025 16:27, Koichiro Den wrote:
> --- a/xen/include/xen/macros.h
> +++ b/xen/include/xen/macros.h
> @@ -5,6 +5,7 @@
> #define ROUNDDOWN(x, a) ((x) & ~((a) - 1))
>
> #define IS_ALIGNED(val, align) (!((val) & ((align) - 1)))
> +#define IS_POWER_OF_TWO(val) ((val) && !((val) & ((val) -
The VCPUOP_register_runstate_memory_area hypercall is still actively
used, e.g., in the Linux arm64 codebase. When KPTI is enabled, the area
was not registered from the beginning due to the VA not always being
valid. In such cases, Linux falls back to using the standard PV time
interface (ARM DEN 0
