linux-kernel - Re: linux-next: manual merge of the kvms390 tree with the kvm-arm tree

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Date:   Wed, 28 Jun 2017 16:02:04 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Christian Borntraeger <borntraeger@...ibm.com>,
        Cornelia Huck <cornelia.huck@...ibm.com>,
        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>,
        Andrew Jones <drjones@...hat.com>,
        Claudio Imbrenda <imbrenda@...ux.vnet.ibm.com>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        Gleb Natapov <gleb@...nel.org>, KVM <kvm@...r.kernel.org>
Subject: Re: linux-next: manual merge of the kvms390 tree with the kvm-arm
 tree

Hi all,

On Fri, 9 Jun 2017 14:28:56 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Today's linux-next merge of the kvms390 tree got a conflict in:
> 
>   arch/s390/include/asm/kvm_host.h
> 
> between commit:
> 
>   2387149eade2 ("KVM: improve arch vcpu request defining")
> 
> from the kvm-arm tree and commit:
> 
>   8611a6a64661 ("KVM: s390: CMMA tracking, ESSA emulation, migration mode")
> 
> from the kvms390 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 arch/s390/include/asm/kvm_host.h
> index 9c3bd94204ac,a8cafed79eb4..000000000000
> --- a/arch/s390/include/asm/kvm_host.h
> +++ b/arch/s390/include/asm/kvm_host.h
> @@@ -42,9 -42,11 +42,11 @@@
>   #define KVM_HALT_POLL_NS_DEFAULT 80000
>   
>   /* s390-specific vcpu->requests bit members */
>  -#define KVM_REQ_ENABLE_IBS         8
>  -#define KVM_REQ_DISABLE_IBS        9
>  -#define KVM_REQ_ICPT_OPEREXC       10
>  -#define KVM_REQ_START_MIGRATION   11
>  -#define KVM_REQ_STOP_MIGRATION    12
>  +#define KVM_REQ_ENABLE_IBS	KVM_ARCH_REQ(0)
>  +#define KVM_REQ_DISABLE_IBS	KVM_ARCH_REQ(1)
>  +#define KVM_REQ_ICPT_OPEREXC	KVM_ARCH_REQ(2)
> ++#define KVM_REQ_START_MIGRATION	KVM_ARCH_REQ(3)
> ++#define KVM_REQ_STOP_MIGRATION	KVM_ARCH_REQ(4)
>   
>   #define SIGP_CTRL_C		0x80
>   #define SIGP_CTRL_SCN_MASK	0x3f

With the merge window appraoching, I assume that these 2 trees will
merge in the kvm tree soon.  This is just a reminder that this conflict
still exists (I think).

-- 
Cheers,
Stephen Rothwell