On 19/03/2019 08:30, Amit Daniel Kachhap wrote:
> Save host MDCR_EL2 value during kvm HYP initialisation and restore
> after every switch from host to guest. There should not be any
> change in functionality due to this.
>
> The value of mdcr_el2 is now stored in struct kvm_cpu_context as
> both host and guest can now use this field in a common way.
>
> Signed-off-by: Amit Daniel Kachhap <[email protected]>
> Acked-by: Mark Rutland <[email protected]>
> Cc: Marc Zyngier <[email protected]>
> Cc: Mark Rutland <[email protected]>
> Cc: Christoffer Dall <[email protected]>
> Cc: [email protected]
[...]
> /**
> - * kvm_arm_init_debug - grab what we need for debug
> - *
> - * Currently the sole task of this function is to retrieve the initial
> - * value of mdcr_el2 so we can preserve MDCR_EL2.HPMN which has
> - * presumably been set-up by some knowledgeable bootcode.
> - *
> - * It is called once per-cpu during CPU hyp initialisation.
> - */
> -
> -void kvm_arm_init_debug(void)
> -{
> - __this_cpu_write(mdcr_el2, kvm_call_hyp_ret(__kvm_get_mdcr_el2));
> -}
The __kvm_get_mdcr_el2 function is no longer used anywhere, so can also
be removed.
Thanks,
Kristina
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