Messages in this thread | | | From | Kristina Martsenko <> | Subject | Re: [PATCH v7 5/10] KVM: arm/arm64: preserve host MDCR_EL2 value | Date | Mon, 25 Mar 2019 20:04:05 +0000 |
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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 <amit.kachhap@arm.com> > Acked-by: Mark Rutland <mark.rutland@arm.com> > Cc: Marc Zyngier <marc.zyngier@arm.com> > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: Christoffer Dall <christoffer.dall@arm.com> > Cc: kvmarm@lists.cs.columbia.edu
[...]
> /** > - * 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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