Override the generic module ELF check to provide a check for the ELF ABI
version. This becomes important if we allow big-endian ELF ABI V2 builds
but it doesn't hurt to check now.
Cc: Jessica Yu <j...@kernel.org>
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
[np: split patch, added changelog, adjust to Jessica's proposal]
Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
arch/powerpc/kernel/module.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/arch/powerpc/kernel/module.c b/arch/powerpc/kernel/module.c
index f6d6ae0a1692..d46bf9bfda26 100644
--- a/arch/powerpc/kernel/module.c
+++ b/arch/powerpc/kernel/module.c
@@ -19,6 +19,23 @@
static LIST_HEAD(module_bug_list);
+#ifdef CONFIG_PPC64
+bool module_elf_check_arch(Elf_Ehdr *hdr)
+{
+ unsigned long abi_level = hdr->e_flags & 0x3;
+
+ if (IS_ENABLED(CONFIG_PPC64_ELF_ABI_V2)) {
+ if (abi_level != 2)
+ return false;
+ } else {
+ if (abi_level >= 2)
+ return false;
+ }
+
+ return true;
+}
+#endif
+
static const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,
const char *name)
--
2.37.2
