ACK: [SRU][linux-aws v5.4 kernels] add pvtime support for arm64 guests

[Andrea Righi]

On Tue, Jul 28, 2020 at 01:17:09PM -0700, Kamal Mostafa wrote:
> BugLink: https://bugs.launchpad.net/bugs/1889282
> 
> The mainline patch set "arm64: Stolen time support" and its prerequisites are
> required to support future AWS instance types.
> 
> Almost all clean mainline cherry-picks (one trivial backport).
> 
> Internal AWS testing yields positive test results for aws/focal and
> aws-5.4/bionic test kernels.
> 
> Pull reqs for aws/focal and aws-5.4/bionic (identical commits) follow.
> 
>  -Kamal

All clean cherry-picks (just a tiny backport change that is clearly
correct), positive test results, looks good to me:

Acked-by: Andrea Righi <andrea.righi at canonical.com>

> 
> -----
> 
> Christoffer Dall (1):
>       KVM: arm/arm64: Factor out hypercall handling from PSCI code
> 
> Mark Rutland (5):
>       arm/arm64: smccc/psci: add arm_smccc_1_1_get_conduit()
>       arm64: errata: use arm_smccc_1_1_get_conduit()
>       arm: spectre-v2: use arm_smccc_1_1_get_conduit()
>       firmware/psci: use common SMCCC_CONDUIT_*
>       firmware: arm_sdei: use common SMCCC_CONDUIT_*
> 
> Steven Price (9):
>       KVM: arm64: Document PV-time interface
>       KVM: arm64: Implement PV_TIME_FEATURES call
>       KVM: Implement kvm_put_guest()
>       KVM: arm64: Support stolen time reporting via shared structure
>       KVM: Allow kvm_device_ops to be const
>       KVM: arm64: Provide VCPU attributes for stolen time
>       arm/arm64: Provide a wrapper for SMCCC 1.1 calls
>       arm/arm64: Make use of the SMCCC 1.1 wrapper
>       arm64: Retrieve stolen time as paravirtualized guest
> 
> 
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