On 09/07/15 10:42, Mark Rutland wrote:
> Hi,
>
>> +static inline bool is_kernel_in_hyp_mode(void)
>> +{
>> + u64 el;
>> +
>> + asm("mrs %0, CurrentEL" : "=r" (el));
>> + return el == CurrentEL_EL2;
>> +}
>
> If you can include cputype.h, I think this can be:
>
> static inline bool is_kernel_in_hyp_mode(void)
> {
> return read_cpuid(CurrentEL) == CurrentEL_EL2;
> }
This would indeed work, but CurrentEL is hardly an ID register. I feel
slightly uncomfortable using read_cpuid (which might return a cached
version at some point) for random system registers.
Thoughts?
M.
--
Jazz is not dead. It just smells funny...
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