Messages in this thread | | | Subject | Re: [PATCH 3/8] arm64: cpufeature: Add CPU capability for AArch32 EL1 support | From | Suzuki K Poulose <> | Date | Wed, 15 Apr 2020 11:13:54 +0100 |
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On 04/14/2020 10:31 PM, Will Deacon wrote: > Although we emit a "SANITY CHECK" warning and taint the kernel if we > detect a CPU mismatch for AArch32 support at EL1, we still online the > CPU with disastrous consequences for any running 32-bit VMs. > > Introduce a capability for AArch32 support at EL1 so that late onlining > of incompatible CPUs is forbidden. > > Signed-off-by: Will Deacon <will@kernel.org>
One of the other important missing sanity check for KVM is the VMID width check. I will code something up.
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
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