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powerpc/module_64: use module_init_section instead of patching names

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Without this patch, module init sections are disabled by patching their
names in arch-specific code when they're loaded (which prevents code in
layout_sections from finding init sections). This patch uses the new
arch-specific module_init_section instead.

This allows modules that have .init_array sections to have the
initialisers properly called (on load, before init). Without this patch,
the initialisers are not called because .init_array is renamed to
_init_array, and thus isn't found by code in find_module_sections().

Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220202055123.2144842-1-wedsonaf@google.com
This commit is contained in:
Wedson Almeida Filho 2022-02-02 05:51:23 +00:00 committed by Michael Ellerman
parent be7be1c6c6
commit d4be60fe66
1 changed files with 6 additions and 5 deletions
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11
arch/powerpc/kernel/module_64.c
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@ -277,6 +277,12 @@ static Elf64_Sym *find_dot_toc(Elf64_Shdr *sechdrs,
return NULL;
}
bool module_init_section(const char *name)
{
/* We don't handle .init for the moment: always return false. */
return false;
}
int module_frob_arch_sections(Elf64_Ehdr *hdr,
Elf64_Shdr *sechdrs,
char *secstrings,
@ -286,7 +292,6 @@ int module_frob_arch_sections(Elf64_Ehdr *hdr,
/* Find .toc and .stubs sections, symtab and strtab */
for (i = 1; i < hdr->e_shnum; i++) {
char *p;
if (strcmp(secstrings + sechdrs[i].sh_name, ".stubs") == 0)
me->arch.stubs_section = i;
else if (strcmp(secstrings + sechdrs[i].sh_name, ".toc") == 0) {
@ -298,10 +303,6 @@ int module_frob_arch_sections(Elf64_Ehdr *hdr,
dedotify_versions((void *)hdr + sechdrs[i].sh_offset,
sechdrs[i].sh_size);
/* We don't handle .init for the moment: rename to _init */
while ((p = strstr(secstrings + sechdrs[i].sh_name, ".init")))
p[0] = '_';
if (sechdrs[i].sh_type == SHT_SYMTAB)
dedotify((void *)hdr + sechdrs[i].sh_offset,
sechdrs[i].sh_size / sizeof(Elf64_Sym),