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    SubjectRE: [PATCH 1/2] kbuild: Add "Section mismatch" warning whitelist for powerpc
    Date
    From
    > -----Original Message-----
    > From: Satyam Sharma [mailto:satyam.sharma@gmail.com]
    > Sent: Tuesday, May 15, 2007 8:18 AM
    > To: Kumar Gala
    > Cc: Sam Ravnborg; Li Yang-r58472; Linus; Andrew Morton; Linux Kernel;
    > linuxppc-dev@ozlabs.org
    > Subject: Re: [PATCH 1/2] kbuild: Add "Section mismatch" warning
    whitelist for
    > powerpc
    >
    > Hi,
    >
    > On 5/14/07, Kumar Gala <galak@kernel.crashing.org> wrote:
    > >
    > > On May 14, 2007, at 6:06 AM, Sam Ravnborg wrote:
    > >
    > > > On Mon, May 14, 2007 at 06:53:32PM +0800, Li Yang wrote:
    > > >> This patch fixes the following "Section mismatch" warnings when
    > > >> build powerpc platforms.
    > > >>
    > > >> -------------
    > > >> WARNING: arch/powerpc/mm/built-in.o - Section mismatch: reference
    to
    > > >> .init.text:early_get_page from .text between
    > > >> 'pte_alloc_one_kernel' (at
    > > >> offset 0xc68) and 'pte_alloc_one'
    > > >> WARNING: mm/built-in.o - Section mismatch: reference to
    > > >> .init.text:set_up_list3s from .text between
    > > >> 'kmem_cache_create' (at offset
    > > >> 0x20300) and 'cache_reap'
    > > >> -------------
    > >
    > > This warnings should be handled by __init_refok instead.
    >
    > Actually, once __init_refok comes in, would we need any other
    > whitelisting mechanism at all? I think the exception patterns in
    > secref_whitelist() and those two other whitelisting functions
    > (init_section_ref_ok and exit_section_ref_ok) could all be
    > subsumed and made redundant if / when __init_refok is used
    > in the actual sources.

    I don't think so. __init_refok can be used to mark special functions
    which are legitimate to reference .init.text/.init.data but cannot be
    used to mark special sections.

    - Leo
    -
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