From de3d098dd1fc635535e3689c5d4aa0684242adde Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Mon, 28 Nov 2022 14:15:37 +1000 Subject: [PATCH] powerpc/64: Add module check for ELF ABI version 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. Signed-off-by: Nicholas Piggin Reviewed-by: Joel Stanley Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20221128041539.1742489-3-npiggin@gmail.com --- arch/powerpc/kernel/module_64.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c index 7e45dc98df8a..ff045644f13f 100644 --- a/arch/powerpc/kernel/module_64.c +++ b/arch/powerpc/kernel/module_64.c @@ -31,6 +31,16 @@ this, and makes other things simpler. Anton? --RR. */ +bool module_elf_check_arch(Elf_Ehdr *hdr) +{ + unsigned long abi_level = hdr->e_flags & 0x3; + + if (IS_ENABLED(CONFIG_PPC64_ELF_ABI_V2)) + return abi_level == 2; + else + return abi_level < 2; +} + #ifdef CONFIG_PPC64_ELF_ABI_V2 static func_desc_t func_desc(unsigned long addr) -- 2.11.0