Re: How to trap a real interrupt to EL2 ?

[Raz <raziebe@xxxxxxxxx>]

The entry woken in the vector is IRQ 64-bit EL1 ( same as el1_irq in kvn/hyp.S ).
ESR_EL2.EC =  0x16 -" HVC executed in EL2".  It does not change.
 

Jintack
CPSR.I is 1 , but I do not think I can just clear it, if that what you mean...

 

Chrtistoph

You deactivate traps in kvm_vcpu_return( called from el1_irq).  

Does it mean we cannot exit-enter the hypervisor when hcr_el2.IMO is enabled ?

thx

   

On Tue, Jul 4, 2017 at 11:12 AM, Christoffer Dall <cdall@xxxxxxxxxx> wrote:

On Mon, Jul 03, 2017 at 09:56:06PM +0000, Raz wrote:
> Hey
>
> I am trying to trap any real IRQ  into EL2.
> I created a thin hypervisor with mmu enabled and set hcr_el2 as follows:
> hcr_el2= HCR_IMO  | HCR_VM | HCR_RW.
>
>
> Now it seems that once I set hcr_el2 to the above value and then exit from
> EL2 I immediately jump back to EL2.

You could read the ESR_EL2 and figure out what caused the exception...

-Christoffer

--

https://sites.google.com/site/ironspeedlinux/

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