Subject: Re: [next-20211210] Build break powerpc/kvm: unknown member wait

From: Sean Christopherson <[email-masked]>
Date: Mon, 13 Dec 2021 17:30:36 +0000

On Sat, Dec 11, 2021, Sachin Sant wrote:
> next-20211210 ( commit ea922272cbe547) powerpc build fails due to following error:
> 
> arch/powerpc/kvm/book3s_hv.c: In function 'kvmhv_run_single_vcpu':
> arch/powerpc/kvm/book3s_hv.c:4591:27: error: 'struct kvm_vcpu' has no member named 'wait'
>    prepare_to_rcuwait(&vcpu->wait);
>                            ^~
> arch/powerpc/kvm/book3s_hv.c:4608:23: error: 'struct kvm_vcpu' has no member named 'wait'
>    finish_rcuwait(&vcpu->wait);
>                        ^~ 
> 
> commit 510958e997217: KVM: Force PPC to define its own rcuwait object 
> introduced the error. 

This is a silent merge conflict between the above commit in the KVM tree and
commit ecb6a7207f92 ("KVM: PPC: Book3S HV P9: Remove most of the vcore logic")
in the PPC tree.

I'll send a patch for the PPC tree that is resolves the issue and is a standalone
cleanup.