linux-kernel - Re: linux-next: manual merge of the kvm-ppc tree with the kvm-arm tree

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Date:   Thu, 11 Oct 2018 13:06:23 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Paul Mackerras <paulus@...abs.org>,
        Christoffer Dall <cdall@...columbia.edu>,
        Marc Zyngier <marc.zyngier@....com>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        KVM <kvm@...r.kernel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>
Subject: Re: linux-next: manual merge of the kvm-ppc tree with the kvm-arm
 tree

Hi all,

On Wed, 10 Oct 2018 13:22:24 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Today's linux-next merge of the kvm-ppc tree got a conflict in:
> 
>   include/uapi/linux/kvm.h
> 
> between commit:
> 
>   233a7cb23531 ("kvm: arm64: Allow tuning the physical address size for VM")
> 
> from the kvm-arm tree and commit:
> 
>   aa069a996951 ("KVM: PPC: Book3S HV: Add a VM capability to enable nested virtualization")
> 
> from the kvm-ppc tree.
> 
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
> 
> -- 
> Cheers,
> Stephen Rothwell
> 
> diff --cc include/uapi/linux/kvm.h
> index 95aa73ca65dc,7f2ff3a76995..000000000000
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
> @@@ -962,7 -954,7 +963,8 @@@ struct kvm_ppc_resize_hpt 
>   #define KVM_CAP_NESTED_STATE 157
>   #define KVM_CAP_ARM_INJECT_SERROR_ESR 158
>   #define KVM_CAP_MSR_PLATFORM_INFO 159
>  -#define KVM_CAP_PPC_NESTED_HV 160
>  +#define KVM_CAP_ARM_VM_IPA_SIZE 160 /* returns maximum IPA bits for a VM */
> ++#define KVM_CAP_PPC_NESTED_HV 161
>   
>   #ifdef KVM_CAP_IRQ_ROUTING
>   

This is now a conflict between the kvm tree and the kvm-arm tree.

-- 
Cheers,
Stephen Rothwell

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