linux-kernel - Re: [PATCH] powerpc: Force inlining of mmu_has

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Message-Id: <161571587146.138988.4861060770867592113.b4-ty@ellerman.id.au>
Date:   Sun, 14 Mar 2021 21:01:19 +1100 (AEDT)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc: Force inlining of mmu_has_feature to fix build failure

On Sat, 27 Feb 2021 16:30:48 +0000 (UTC), Christophe Leroy wrote:
> The test robot has managed to generate a random config leading
> to following build failure:
> 
>   LD      .tmp_vmlinux.kallsyms1
> powerpc64-linux-ld: arch/powerpc/mm/pgtable.o: in function `ptep_set_access_flags':
> pgtable.c:(.text.ptep_set_access_flags+0xf0): undefined reference to `hash__flush_tlb_page'
> powerpc64-linux-ld: arch/powerpc/mm/book3s32/mmu.o: in function `MMU_init_hw_patch':
> mmu.c:(.init.text+0x452): undefined reference to `patch__hash_page_A0'
> powerpc64-linux-ld: mmu.c:(.init.text+0x45e): undefined reference to `patch__hash_page_A0'
> powerpc64-linux-ld: mmu.c:(.init.text+0x46a): undefined reference to `patch__hash_page_A1'
> powerpc64-linux-ld: mmu.c:(.init.text+0x476): undefined reference to `patch__hash_page_A1'
> powerpc64-linux-ld: mmu.c:(.init.text+0x482): undefined reference to `patch__hash_page_A2'
> powerpc64-linux-ld: mmu.c:(.init.text+0x48e): undefined reference to `patch__hash_page_A2'
> powerpc64-linux-ld: mmu.c:(.init.text+0x49e): undefined reference to `patch__hash_page_B'
> powerpc64-linux-ld: mmu.c:(.init.text+0x4aa): undefined reference to `patch__hash_page_B'
> powerpc64-linux-ld: mmu.c:(.init.text+0x4b6): undefined reference to `patch__hash_page_C'
> powerpc64-linux-ld: mmu.c:(.init.text+0x4c2): undefined reference to `patch__hash_page_C'
> powerpc64-linux-ld: mmu.c:(.init.text+0x4ce): undefined reference to `patch__flush_hash_A0'
> powerpc64-linux-ld: mmu.c:(.init.text+0x4da): undefined reference to `patch__flush_hash_A0'
> powerpc64-linux-ld: mmu.c:(.init.text+0x4e6): undefined reference to `patch__flush_hash_A1'
> powerpc64-linux-ld: mmu.c:(.init.text+0x4f2): undefined reference to `patch__flush_hash_A1'
> powerpc64-linux-ld: mmu.c:(.init.text+0x4fe): undefined reference to `patch__flush_hash_A2'
> powerpc64-linux-ld: mmu.c:(.init.text+0x50a): undefined reference to `patch__flush_hash_A2'
> powerpc64-linux-ld: mmu.c:(.init.text+0x522): undefined reference to `patch__flush_hash_B'
> powerpc64-linux-ld: mmu.c:(.init.text+0x532): undefined reference to `patch__flush_hash_B'
> powerpc64-linux-ld: arch/powerpc/mm/book3s32/mmu.o: in function `update_mmu_cache':
> mmu.c:(.text.update_mmu_cache+0xa0): undefined reference to `add_hash_page'
> powerpc64-linux-ld: mm/memory.o: in function `zap_pte_range':
> memory.c:(.text.zap_pte_range+0x160): undefined reference to `flush_hash_pages'
> powerpc64-linux-ld: mm/memory.o: in function `handle_pte_fault':
> memory.c:(.text.handle_pte_fault+0x180): undefined reference to `hash__flush_tlb_page'
> 
> [...]

Applied to powerpc/fixes.

[1/1] powerpc: Force inlining of mmu_has_feature to fix build failure
      https://git.kernel.org/powerpc/c/acdad8fb4a1574323db88f98a38b630691574e16

cheers