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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-03 10:30:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-03 10:30:27 -0800 |
| commit | 2cb54ce9ee92ae627bc1cef8bea236905910a86d (patch) | |
| tree | 8cf38943b5acd64b25621d6eab72591c6a65ba1e /include/asm-generic/export.h | |
| parent | 29905b52fad0854351f57bab867647e4982285bf (diff) | |
| parent | 4b9eee96fcb361a5e16a8d2619825e8a048f81f7 (diff) | |
Merge branch 'modversions' (modversions fixes for powerpc from Ard)
Merge kcrctab entry fixes from Ard Biesheuvel:
"This is a followup to [0] 'modversions: redefine kcrctab entries as
relative CRC pointers', but since relative CRC pointers do not work in
modules, and are actually only needed by powerpc with
CONFIG_RELOCATABLE=y, I have made it a Kconfig selectable feature
instead.
First it introduces the MODULE_REL_CRCS Kconfig symbol, and adds the
kbuild handling of it, i.e., modpost, genksyms and kallsyms.
Then it switches all architectures to 32-bit CRC entries in kcrctab,
where all architectures except powerpc with CONFIG_RELOCATABLE=y use
absolute ELF symbol references as before"
[0] http://marc.info/?l=linux-arch&m=148493613415294&w=2
* emailed patches from Ard Biesheuvel:
module: unify absolute krctab definitions for 32-bit and 64-bit
modversions: treat symbol CRCs as 32 bit quantities
kbuild: modversions: add infrastructure for emitting relative CRCs
Diffstat (limited to 'include/asm-generic/export.h')
| -rw-r--r-- | include/asm-generic/export.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/include/asm-generic/export.h b/include/asm-generic/export.h index 63554e9f6e0c..719db1968d81 100644 --- a/include/asm-generic/export.h +++ b/include/asm-generic/export.h @@ -9,18 +9,15 @@ #ifndef KSYM_ALIGN #define KSYM_ALIGN 8 #endif -#ifndef KCRC_ALIGN -#define KCRC_ALIGN 8 -#endif #else #define __put .long #ifndef KSYM_ALIGN #define KSYM_ALIGN 4 #endif +#endif #ifndef KCRC_ALIGN #define KCRC_ALIGN 4 #endif -#endif #ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX #define KSYM(name) _##name @@ -52,7 +49,11 @@ KSYM(__kstrtab_\name): .section ___kcrctab\sec+\name,"a" .balign KCRC_ALIGN KSYM(__kcrctab_\name): - __put KSYM(__crc_\name) +#if defined(CONFIG_MODULE_REL_CRCS) + .long KSYM(__crc_\name) - . +#else + .long KSYM(__crc_\name) +#endif .weak KSYM(__crc_\name) .previous #endif |