linux-kernel - Re: linux-next: manual merge of the akpm-current tree with the powerpc tree

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Date:   Thu, 6 May 2021 09:43:11 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Michael Ellerman <mpe@...erman.id.au>,
        PowerPC <linuxppc-dev@...ts.ozlabs.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: manual merge of the akpm-current tree with the
 powerpc tree

Hi all,

On Wed, 5 May 2021 11:39:59 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Today's linux-next merge of the akpm-current tree got a conflict in:
> 
>   arch/powerpc/Kconfig
> 
> between commit:
> 
>   c6b05f4e233c ("powerpc/kconfig: Restore alphabetic order of the selects under CONFIG_PPC")
> 
> from the powerpc tree and commits:
> 
>   fd7d5c273c43 ("mm: generalize HUGETLB_PAGE_SIZE_VARIABLE")
>   301ba77ae03c ("mm: generalize ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE]")
> 
> from the akpm-current 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/powerpc/Kconfig
> index ab17a56c3d10,d4333049b813..000000000000
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@@ -118,11 -118,10 +118,13 @@@ config PP
>   	# Please keep this list sorted alphabetically.
>   	#
>   	select ARCH_32BIT_OFF_T if PPC32
> + 	select ARCH_ENABLE_MEMORY_HOTPLUG
> + 	select ARCH_ENABLE_MEMORY_HOTREMOVE
>  +	select ARCH_HAS_COPY_MC			if PPC64
>   	select ARCH_HAS_DEBUG_VIRTUAL
>  +	select ARCH_HAS_DEBUG_VM_PGTABLE
>   	select ARCH_HAS_DEVMEM_IS_ALLOWED
>  +	select ARCH_HAS_DMA_MAP_DIRECT 		if PPC_PSERIES
>   	select ARCH_HAS_ELF_RANDOMIZE
>   	select ARCH_HAS_FORTIFY_SOURCE
>   	select ARCH_HAS_GCOV_PROFILE_ALL
> @@@ -163,8 -162,9 +165,8 @@@
>   	select BUILDTIME_TABLE_SORT
>   	select CLONE_BACKWARDS
>   	select DCACHE_WORD_ACCESS		if PPC64 && CPU_LITTLE_ENDIAN
> - 	select DMA_OPS_BYPASS			if PPC64
>   	select DMA_OPS				if PPC64
> + 	select DMA_OPS_BYPASS			if PPC64
>  -	select ARCH_HAS_DMA_MAP_DIRECT 		if PPC64 && PPC_PSERIES
>   	select DYNAMIC_FTRACE			if FUNCTION_TRACER
>   	select EDAC_ATOMIC_SCRUB
>   	select EDAC_SUPPORT
> @@@ -182,15 -181,12 +184,15 @@@
>   	select GENERIC_STRNCPY_FROM_USER
>   	select GENERIC_STRNLEN_USER
>   	select GENERIC_TIME_VSYSCALL
>  -	select GENERIC_GETTIMEOFDAY
>  +	select GENERIC_VDSO_TIME_NS
>   	select HAVE_ARCH_AUDITSYSCALL
> - 	select HAVE_ARCH_HUGE_VMAP		if PPC_BOOK3S_64 && PPC_RADIX_MMU
>  +	select HAVE_ARCH_HUGE_VMALLOC		if HAVE_ARCH_HUGE_VMAP
> + 	select HAVE_ARCH_HUGE_VMAP		if PPC_BOOK3S_64 && PPC_RADIX_MMU
>   	select HAVE_ARCH_JUMP_LABEL
>  +	select HAVE_ARCH_JUMP_LABEL_RELATIVE
>   	select HAVE_ARCH_KASAN			if PPC32 && PPC_PAGE_SHIFT <= 14
>   	select HAVE_ARCH_KASAN_VMALLOC		if PPC32 && PPC_PAGE_SHIFT <= 14
>  +	select HAVE_ARCH_KFENCE			if PPC32
>   	select HAVE_ARCH_KGDB
>   	select HAVE_ARCH_MMAP_RND_BITS
>   	select HAVE_ARCH_MMAP_RND_COMPAT_BITS	if COMPAT
> @@@ -231,19 -227,23 +233,20 @@@
>   	select HAVE_LIVEPATCH			if HAVE_DYNAMIC_FTRACE_WITH_REGS
>   	select HAVE_MOD_ARCH_SPECIFIC
>   	select HAVE_NMI				if PERF_EVENTS || (PPC64 && PPC_BOOK3S)
>  -	select HAVE_HARDLOCKUP_DETECTOR_ARCH	if (PPC64 && PPC_BOOK3S)
>  -	select HAVE_OPTPROBES			if PPC64
>  +	select HAVE_OPTPROBES
>   	select HAVE_PERF_EVENTS
>   	select HAVE_PERF_EVENTS_NMI		if PPC64
>  -	select HAVE_HARDLOCKUP_DETECTOR_PERF	if PERF_EVENTS && HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH
>   	select HAVE_PERF_REGS
>   	select HAVE_PERF_USER_STACK_DUMP
>  -	select HUGETLB_PAGE_SIZE_VARIABLE	if PPC_BOOK3S_64 && HUGETLB_PAGE
>  -	select MMU_GATHER_RCU_TABLE_FREE
>  -	select MMU_GATHER_PAGE_SIZE
>   	select HAVE_REGS_AND_STACK_ACCESS_API
>  -	select HAVE_RELIABLE_STACKTRACE		if PPC_BOOK3S_64 && CPU_LITTLE_ENDIAN
>  +	select HAVE_RELIABLE_STACKTRACE
>  +	select HAVE_RSEQ
>   	select HAVE_SOFTIRQ_ON_OWN_STACK
>  +	select HAVE_STACKPROTECTOR		if PPC32 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r2)
>  +	select HAVE_STACKPROTECTOR		if PPC64 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r13)
>   	select HAVE_SYSCALL_TRACEPOINTS
>   	select HAVE_VIRT_CPU_ACCOUNTING
>  -	select HAVE_IRQ_TIME_ACCOUNTING
>  -	select HAVE_RSEQ
> ++	select HUGETLB_PAGE_SIZE_VARIABLE	if PPC_BOOK3S_64 && HUGETLB_PAGE
>   	select IOMMU_HELPER			if PPC64
>   	select IRQ_DOMAIN
>   	select IRQ_FORCED_THREADING

This is now a conflict between the powerpc tree and Linus' tree.

-- 
Cheers,
Stephen Rothwell

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