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SubjectRe: [PATCH 1/2] kbuild: Add "Section mismatch" warning whitelist for powerpc
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'
> -------------
>
> Massive warnings represented by:
> -------------
> WARNING: arch/powerpc/kernel/built-in.o - Section mismatch: reference to
> .init.data:.got2 from prom_entry (offset 0x0)
> WARNING: arch/powerpc/platforms/built-in.o - Section mismatch: reference to
> .init.text:mpc8313_rdb_probe from .machine.desc after 'mach_mpc8313_rdb'
> (at offset 0x4)
> -------------
>
> Signed-off-by: Li Yang <leoli@freescale.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
> ---
> scripts/mod/modpost.c | 16 ++++++++++++----
> 1 files changed, 12 insertions(+), 4 deletions(-)
>
> diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
> index c89cb71..aa3a881 100644
> --- a/scripts/mod/modpost.c
> +++ b/scripts/mod/modpost.c
> @@ -649,9 +649,10 @@ static int strrcmp(const char *s, const char *sub)
> * tosec = .init.text
> *
> * Pattern 10:
> - * ia64 has machvec table for each platform. It is mixture of function
> - * pointer of .init.text and .text.
> - * fromsec = .machvec
> + * ia64 has machvec table and powerpc has machine desc table for each
> + * platform. It is mixture of function pointer of .init.text and .text.
> + * fromsec = .machvec | .machine.desc
> + *
> **/
> static int secref_whitelist(const char *modname, const char *tosec,
> const char *fromsec, const char *atsym,
> @@ -681,6 +682,8 @@ static int secref_whitelist(const char *modname, const
> char *tosec,
> const char *pat4sym[] = {
> "sparse_index_alloc",
> "zone_wait_table_init",
> + "pte_alloc_one_kernel",
> + "kmem_cache_create",
> NULL
> };
>
> @@ -750,7 +753,8 @@ static int secref_whitelist(const char *modname, const
> char *tosec,
> return 1;
>
> /* Check for pattern 10 */
> - if (strcmp(fromsec, ".machvec") == 0)
> + if ((strcmp(fromsec, ".machvec") == 0) ||
> + (strcmp(fromsec, ".machine.desc") == 0))
> return 1;
>
> return 0;
> @@ -883,6 +887,10 @@ static void warn_sec_mismatch(const char *modname,
> const char *fromsec,
> secref_whitelist(modname, secname, fromsec,
> elf->strtab + before->st_name, refsymname))
> return;
> + /* fromsec whitelist - without a valid 'before' */
> + /* powerpc has a GOT table in .got2 section */
> + if (strcmp(fromsec, ".got2") == 0)
> + return;
>
> if (before && after) {
> warn("%s - Section mismatch: reference to %s:%s from %s "
>
-
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