[v3,02/12] powerpc: Use 'struct func_desc' instead of 'struct ppc64_opd_entry'

Commit Message

Christophe Leroy Oct. 17, 2021, 12:38 p.m. UTC

'struct ppc64_opd_entry' is somehow redundant with 'struct func_desc',
the later is more correct/complete as it includes the third
field which is unused.

So use 'struct func_desc' instead of 'struct ppc64_opd_entry'

Reviewed-by: Kees Cook <[e-mail]>
Reviewed-by: Daniel Axtens <[e-mail]>
Reviewed-by: Nicholas Piggin <[e-mail]>
Signed-off-by: Christophe Leroy <[e-mail]>
---
 arch/powerpc/include/asm/sections.h |  4 ++--
 arch/powerpc/kernel/module_64.c     | 10 +++++-----
 2 files changed, 7 insertions(+), 7 deletions(-)

Patch

diff --git a/arch/powerpc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h
index 6e4af4492a14..abd2e5213197 100644
--- a/arch/powerpc/include/asm/sections.h
+++ b/arch/powerpc/include/asm/sections.h
@@ -74,10 +74,10 @@  static inline int overlaps_kernel_text(unsigned long start, unsigned long end)
 #undef dereference_function_descriptor
 static inline void *dereference_function_descriptor(void *ptr)
 {
-	struct ppc64_opd_entry *desc = ptr;
+	struct func_desc *desc = ptr;
 	void *p;
 
-	if (!get_kernel_nofault(p, (void *)&desc->funcaddr))
+	if (!get_kernel_nofault(p, (void *)&desc->addr))
 		ptr = p;
 	return ptr;
 }
diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
index 6baa676e7cb6..a89da0ee25e2 100644
--- a/arch/powerpc/kernel/module_64.c
+++ b/arch/powerpc/kernel/module_64.c
@@ -64,19 +64,19 @@  static unsigned int local_entry_offset(const Elf64_Sym *sym)
 #else
 
 /* An address is address of the OPD entry, which contains address of fn. */
-typedef struct ppc64_opd_entry func_desc_t;
+typedef struct func_desc func_desc_t;
 
 static func_desc_t func_desc(unsigned long addr)
 {
-	return *(struct ppc64_opd_entry *)addr;
+	return *(struct func_desc *)addr;
 }
 static unsigned long func_addr(unsigned long addr)
 {
-	return func_desc(addr).funcaddr;
+	return func_desc(addr).addr;
 }
 static unsigned long stub_func_addr(func_desc_t func)
 {
-	return func.funcaddr;
+	return func.addr;
 }
 static unsigned int local_entry_offset(const Elf64_Sym *sym)
 {
@@ -187,7 +187,7 @@  static int relacmp(const void *_x, const void *_y)
 static unsigned long get_stubs_size(const Elf64_Ehdr *hdr,
 				    const Elf64_Shdr *sechdrs)
 {
-	/* One extra reloc so it's always 0-funcaddr terminated */
+	/* One extra reloc so it's always 0-addr terminated */
 	unsigned long relocs = 1;
 	unsigned i;