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    Subject[PATCH 5.8 199/255] arm64: vdso32: make vdso32 install conditional
    Date
    From: Frank van der Linden <fllinden@amazon.com>

    commit 5d28ba5f8a0cfa3a874fa96c33731b8fcd141b3a upstream.

    vdso32 should only be installed if CONFIG_COMPAT_VDSO is enabled,
    since it's not even supposed to be compiled otherwise, and arm64
    builds without a 32bit crosscompiler will fail.

    Fixes: 8d75785a8142 ("ARM64: vdso32: Install vdso32 from vdso_install")
    Signed-off-by: Frank van der Linden <fllinden@amazon.com>
    Cc: stable@vger.kernel.org [5.4+]
    Link: https://lore.kernel.org/r/20200827234012.19757-1-fllinden@amazon.com
    Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/arm64/Makefile | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    --- a/arch/arm64/Makefile
    +++ b/arch/arm64/Makefile
    @@ -158,7 +158,8 @@ zinstall install:
    PHONY += vdso_install
    vdso_install:
    $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
    - $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso32 $@
    + $(if $(CONFIG_COMPAT_VDSO), \
    + $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso32 $@)

    # We use MRPROPER_FILES and CLEAN_FILES now
    archclean:

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