Re: [PATCH v9 0/2] kvm: x86: hyperv: guest->host event signaling via eventfd

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On 01.02.2018 14:48, Roman Kagan wrote:
> Make it possible for guests using Hyper-V emulation to do guest->host
> notification via EVENT_SIGNAL hypercall without a user exit.
> 
> Special thanks to David Hildenbrand for going through the spec with me
> to figure out the desired behavior.
> 
> v8 -> v9:
>  - pass events with non-zero FlagNumber to userspace
> 

Did you miss to include the right patch?

(or am I too blind to find it)

> v7 -> v8:
>  - rebase to latest master
> 
> v6 -> v7:
>  - reject non-zero flag number as invalid
>  - adjust error returns to better match the spec
> 
> v5 -> v6:
>  - drop unnecessary srcu_read_lock/unlock, and clean up after that
> 
> v4 -> v5:
>  - fix block comment formatting
> 
> v3 -> v4:
>  - switch to kvm_vcpu_read_guest and take srcu_read_lock around it
>  - rework and document the interpretation of the hypercall parameter
>  - merge !fast version into kvm_hvcall_signal_event for brevity
> 
> v2 -> v3:
>  - expand docs on allowed values and return codes
>  - fix uninitialized return
>  - style fixes
> 
> v1 -> v2:
>  - make data types consistent
>  - get by without the recently dropped struct hv_input_signal_event
>  - fix subject prefixes
> 
> Roman Kagan (2):
>   kvm: x86: factor out kvm.arch.hyperv (de)init
>   kvm: x86: hyperv: guest->host event signaling via eventfd
> 
>  Documentation/virtual/kvm/api.txt  |  31 ++++++++++
>  arch/x86/include/asm/kvm_host.h    |   2 +
>  arch/x86/include/uapi/asm/hyperv.h |   2 +
>  arch/x86/kvm/hyperv.h              |   4 ++
>  include/uapi/linux/kvm.h           |  13 +++++
>  arch/x86/kvm/hyperv.c              | 112 ++++++++++++++++++++++++++++++++++++-
>  arch/x86/kvm/x86.c                 |  13 ++++-
>  7 files changed, 175 insertions(+), 2 deletions(-)
> 


-- 

Thanks,

David / dhildenb



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