kbuild: add "Section mismatch" warning whitelist for powerpc
This patch fixes the following class of "Section mismatch" warnings when building powerpc platforms. 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> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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@ -650,9 +650,10 @@ static int strrcmp(const char *s, const char *sub)
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* tosec = .init.text
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* tosec = .init.text
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*
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*
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* Pattern 10:
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* Pattern 10:
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* ia64 has machvec table for each platform. It is mixture of function
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* ia64 has machvec table for each platform and
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* pointer of .init.text and .text.
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* powerpc has a machine desc table for each platform.
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* fromsec = .machvec
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* It is mixture of function pointers of .init.text and .text.
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* fromsec = .machvec | .machine.desc
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**/
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**/
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static int secref_whitelist(const char *modname, const char *tosec,
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static int secref_whitelist(const char *modname, const char *tosec,
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const char *fromsec, const char *atsym,
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const char *fromsec, const char *atsym,
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@ -751,7 +752,8 @@ static int secref_whitelist(const char *modname, const char *tosec,
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return 1;
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return 1;
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/* Check for pattern 10 */
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/* Check for pattern 10 */
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if (strcmp(fromsec, ".machvec") == 0)
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if ((strcmp(fromsec, ".machvec") == 0) ||
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(strcmp(fromsec, ".machine.desc") == 0))
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return 1;
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return 1;
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return 0;
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return 0;
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@ -887,6 +889,11 @@ static void warn_sec_mismatch(const char *modname, const char *fromsec,
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elf->strtab + before->st_name, refsymname))
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elf->strtab + before->st_name, refsymname))
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return;
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return;
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/* fromsec whitelist - without a valid 'before'
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* powerpc has a GOT table in .got2 section */
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if (strcmp(fromsec, ".got2") == 0)
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return;
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if (before && after) {
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if (before && after) {
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warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
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warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
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"(between '%s' and '%s')\n",
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"(between '%s' and '%s')\n",
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