From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Weak header file declarations are error-prone because they make every
definition weak, and the linker chooses one based on link order (see
10629d711ed7 ("PCI: Remove __weak annotation from pcibios_get_phb_of_node
decl")).
For the following functions:
arch_kexec_kernel_image_probe()
arch_kexec_kernel_image_load()
arch_kimage_file_post_load_cleanup()
arch_kexec_kernel_verify_sig()
arch_kexec_apply_relocations_add()
arch_kexec_apply_relocations()
kernel/kexec_file.c contains weak definitions, and x86 and powerpc arch
code contains definitions intended to be non-weak. But the annotations in
the header file make *all* the definitions weak, so it's unclear which ones
will be used.
Remove the "weak" attribute from the declarations so we always prefer
non-weak definitions over the weak ones.
Fixes: a43cac0d9dc2 ("kexec: split kexec_file syscall code to kexec_file.c")
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
CC: stable@xxxxxxxxxxxxxxx # v4.3+
---
include/linux/kexec.h | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index f16f6ceb3875..8bf0ff90885c 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -277,16 +277,16 @@ int crash_shrink_memory(unsigned long new_size);
size_t crash_get_memory_size(void);
void crash_free_reserved_phys_range(unsigned long begin, unsigned long end);
-int __weak arch_kexec_kernel_image_probe(struct kimage *image, void *buf,
- unsigned long buf_len);
-void * __weak arch_kexec_kernel_image_load(struct kimage *image);
-int __weak arch_kimage_file_post_load_cleanup(struct kimage *image);
-int __weak arch_kexec_kernel_verify_sig(struct kimage *image, void *buf,
- unsigned long buf_len);
-int __weak arch_kexec_apply_relocations_add(const Elf_Ehdr *ehdr,
- Elf_Shdr *sechdrs, unsigned int relsec);
-int __weak arch_kexec_apply_relocations(const Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
- unsigned int relsec);
+int arch_kexec_kernel_image_probe(struct kimage *image, void *buf,
+ unsigned long buf_len);
+void *arch_kexec_kernel_image_load(struct kimage *image);
+int arch_kimage_file_post_load_cleanup(struct kimage *image);
+int arch_kexec_kernel_verify_sig(struct kimage *image, void *buf,
+ unsigned long buf_len);
+int arch_kexec_apply_relocations_add(const Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
+ unsigned int relsec);
+int arch_kexec_apply_relocations(const Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
+ unsigned int relsec);
void arch_kexec_protect_crashkres(void);
void arch_kexec_unprotect_crashkres(void);
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