linux-kernel - Re: linux-next: manual merge of the kvm-arm tree with the arm64 tree

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Date:   Thu, 16 Aug 2018 10:15:15 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Christoffer Dall <cdall@...columbia.edu>,
        Marc Zyngier <marc.zyngier@....com>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        KVM <kvm@...r.kernel.org>
Subject: Re: linux-next: manual merge of the kvm-arm tree with the arm64
 tree

Hi all,

On Mon, 23 Jul 2018 14:46:41 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Today's linux-next merge of the kvm-arm tree got a conflict in:
> 
>   arch/arm64/include/asm/cpucaps.h
> 
> between commit:
> 
>   314d53d29798 ("arm64: Handle mismatched cache type")
> 
> from the arm64 tree and commit:
> 
>   e48d53a91f6e ("arm64: KVM: Add support for Stage-2 control of memory types and cacheability")
> 
> from the kvm-arm 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/arm64/include/asm/cpucaps.h
> index be3bf3d08916,ed84d6536830..000000000000
> --- a/arch/arm64/include/asm/cpucaps.h
> +++ b/arch/arm64/include/asm/cpucaps.h
> @@@ -49,8 -49,8 +49,9 @@@
>   #define ARM64_HAS_CACHE_DIC			28
>   #define ARM64_HW_DBM				29
>   #define ARM64_SSBD				30
>  -#define ARM64_HAS_STAGE2_FWB			31
>  +#define ARM64_MISMATCHED_CACHE_TYPE		31
> ++#define ARM64_HAS_STAGE2_FWB			32
>   
> --#define ARM64_NCAPS				32
> ++#define ARM64_NCAPS				33
>   
>   #endif /* __ASM_CPUCAPS_H */

This is now a conflict between Linus' tree and the kvm-arm tree (and
presumably soon the kvm tree).

-- 
Cheers,
Stephen Rothwell

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