[/me beats himself for not writing a subject line...]
On 18/05/18 17:29, Vince Weaver wrote:
> On Fri, 18 May 2018, Marc Zyngier wrote:
>
>> There is also the case of people natively running 32bit kernels on
>> 64bit HW and trying to upstream unspeakable hacks, hoping that the
>> stars will align and that they'll win the lottery (see [1]).
>
> I've tested these patches on a Raspberry Pi 3B running a 32-bit upstream
> (4.17-rc5-git) kernel and they work.
>
> [ 0.472906] hw perfevents: enabled with armv8_cortex_a53 PMU driver, 7
> counters available
>
> I only needed to add this to the devicetree
>
> arm-pmu {
> compatible = "arm,cortex-a53-pmu";
> interrupt-parent = <&local_intc>;
> interrupts = <9 IRQ_TYPE_LEVEL_HIGH>;
> };
That's definitely the sensible thing to have on such hardware. Why isn't
it in the upstream DT already, irrespective of the state of the kernel
support?
> Tested-by: Vince Weaver <[email protected]>
Thanks a lot for testing.
M.
--
Jazz is not dead. It just smells funny...
