Messages in this thread | | | Date | Mon, 15 Jan 2024 14:47:54 +0000 | From | Oliver Upton <> | Subject | Re: [PATCH] KVM: arm64: Add missing ERX*_EL1 registers |
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On Wed, Jan 10, 2024 at 12:20:30PM +0000, Marc Zyngier wrote: > If my reading of the ARM ARM is correct, these registers only exist if > FEAT_RASv1p1 is implemented. Which means that we shouldn't handle > those as RAZ/WI unconditionally, but instead check for what we > advertise to the guest and handle it accordingly.
Can we go a step further and just stop advertising RAS to guests? I don't expect VMs to gain much from our RAZ/WI implementation. Conditional RAZ/WI would still be helpful in this case for migrated VMs that have 'seen' the feature.
-- Thanks, Oliver
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