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From: "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Will Deacon <will@kernel.org>,
	Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Nick Piggin <npiggin@gmail.com>, Arnd Bergmann <arnd@arndb.de>,
	linux-arch@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: mainline build failure due to b67fbebd4cf9 ("mmu_gather: Force tlb-flush VM_PFNMAP vmas")
Date: Fri, 22 Jul 2022 08:53:43 +0100	[thread overview]
Message-ID: <YtpXh0QHWwaEWVAY@debian> (raw)

Hi All,

The latest mainline kernel branch fails to build for alpha allmodconfig
with the error:

In file included from ./arch/alpha/include/asm/tlb.h:5,
                 from mm/oom_kill.c:48:
./include/asm-generic/tlb.h:401:1: error: redefinition of 'tlb_update_vma_flags'
  401 | tlb_update_vma_flags(struct mmu_gather *tlb, struct vm_area_struct *vma)
      | ^~~~~~~~~~~~~~~~~~~~
./include/asm-generic/tlb.h:372:1: note: previous definition of 'tlb_update_vma_flags' with type 'void(struct mmu_gather *, struct vm_area_struct *)'
  372 | tlb_update_vma_flags(struct mmu_gather *tlb, struct vm_area_struct *vma) { }
      | ^~~~~~~~~~~~~~~~~~~~
In file included from ./arch/alpha/include/asm/tlb.h:5,
                 from arch/alpha/mm/init.c:32:
./include/asm-generic/tlb.h:401:1: error: redefinition of 'tlb_update_vma_flags'
  401 | tlb_update_vma_flags(struct mmu_gather *tlb, struct vm_area_struct *vma)
      | ^~~~~~~~~~~~~~~~~~~~
./include/asm-generic/tlb.h:372:1: note: previous definition of 'tlb_update_vma_flags' with type 'void(struct mmu_gather *, struct vm_area_struct *)'
  372 | tlb_update_vma_flags(struct mmu_gather *tlb, struct vm_area_struct *vma) { }
      | ^~~~~~~~~~~~~~~~~~~~
In file included from ./arch/alpha/include/asm/tlb.h:5,
                 from kernel/sched/core.c:77:
./include/asm-generic/tlb.h:401:1: error: redefinition of 'tlb_update_vma_flags'
  401 | tlb_update_vma_flags(struct mmu_gather *tlb, struct vm_area_struct *vma)
      | ^~~~~~~~~~~~~~~~~~~~
./include/asm-generic/tlb.h:372:1: note: previous definition of 'tlb_update_vma_flags' with type 'void(struct mmu_gather *, struct vm_area_struct *)'
  372 | tlb_update_vma_flags(struct mmu_gather *tlb, struct vm_area_struct *vma) { }
      | ^~~~~~~~~~~~~~~~~~~~
In file included from ./arch/alpha/include/asm/tlb.h:5,
                 from fs/proc/task_mmu.c:25:
./include/asm-generic/tlb.h:401:1: error: redefinition of 'tlb_update_vma_flags'
  401 | tlb_update_vma_flags(struct mmu_gather *tlb, struct vm_area_struct *vma)
      | ^~~~~~~~~~~~~~~~~~~~
./include/asm-generic/tlb.h:372:1: note: previous definition of 'tlb_update_vma_flags' with type 'void(struct mmu_gather *, struct vm_area_struct *)'
  372 | tlb_update_vma_flags(struct mmu_gather *tlb, struct vm_area_struct *vma) { }
      | ^~~~~~~~~~~~~~~~~~~~

git bisect pointed to b67fbebd4cf9 ("mmu_gather: Force tlb-flush VM_PFNMAP vmas").
And, reverting that commit has fixed the build failure.

I will be happy to test any patch or provide any extra log if needed.

--
Regards
Sudip


             reply	other threads:[~2022-07-22  7:53 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-22  7:53 Sudip Mukherjee (Codethink) [this message]
2022-07-22 16:27 ` Linus Torvalds
2022-07-22 17:19   ` Sudip Mukherjee
2022-07-22 18:57     ` Linus Torvalds

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