[PATCH v6 17/64] KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor

Alexandru Elisei alexandru.elisei at arm.com
Thu Feb 3 07:53:27 PST 2022


Hi Marc,

On Fri, Jan 28, 2022 at 12:18:25PM +0000, Marc Zyngier wrote:
> From: Christoffer Dall <christoffer.dall at arm.com>
> 
> We can no longer blindly copy the VCPU's PSTATE into SPSR_EL2 and return
> to the guest and vice versa when taking an exception to the hypervisor,
> because we emulate virtual EL2 in EL1 and therefore have to translate
> the mode field from EL2 to EL1 and vice versa.
> 
> This requires keeping track of the state we enter the guest, for which
> we transiently use a dedicated flag.

Looks good to me:

Reviewed-by: Alexandru Elisei <alexandru.elisei at arm.com>

Thanks,
Alex



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