[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
More information about the linux-arm-kernel
mailing list