On Wed, Jul 08, 2015 at 05:19:04PM +0100, Marc Zyngier wrote:
> With ARMv8.1 VHE extension, it will be possible to run the kernel
> at EL2 (aka HYP mode). In order for the kernel to easily find out
> where it is running, add a new predicate that returns whether or
> not the kernel is in HYP mode.
>
On Thu, Jul 09, 2015 at 11:05:34AM +0100, Marc Zyngier wrote:
> 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;
> >> +}
> >
> >
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_ke
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(Curr
With ARMv8.1 VHE extension, it will be possible to run the kernel
at EL2 (aka HYP mode). In order for the kernel to easily find out
where it is running, add a new predicate that returns whether or
not the kernel is in HYP mode.
For completeness, the 32bit code also get such a predicate (always
ret
