Commit a9c3475d authored by Vignesh Balasubramanian's avatar Vignesh Balasubramanian Committed by Kees Cook
Browse files

Replace macro "ARCH_HAVE_EXTRA_ELF_NOTES" with kconfig 



"ARCH_HAVE_EXTRA_ELF_NOTES" enables an extra note section in the
core dump. Kconfig variable is preferred over ARCH_HAVE_* macro.

Co-developed-by: default avatarJini Susan George <jinisusan.george@amd.com>
Signed-off-by: default avatarJini Susan George <jinisusan.george@amd.com>
Signed-off-by: default avatarVignesh Balasubramanian <vigbalas@amd.com>
Acked-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20240412062138.1132841-2-vigbalas@amd.com


Signed-off-by: default avatarKees Cook <keescook@chromium.org>
parent c8238994

arch/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -502,6 +502,15 @@ config MMU_LAZY_TLB_SHOOTDOWN 
config ARCH_HAVE_NMI_SAFE_CMPXCHG

	bool



config ARCH_HAVE_EXTRA_ELF_NOTES

	bool

	help

	  An architecture should select this in order to enable adding an

	  arch-specific ELF note section to core files. It must provide two

	  functions: elf_coredump_extra_notes_size() and

	  elf_coredump_extra_notes_write() which are invoked by the ELF core

	  dumper.



config ARCH_HAS_NMI_SAFE_THIS_CPU_OPS

	bool

arch/powerpc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -156,6 +156,7 @@ config PPC 
	select ARCH_HAS_UACCESS_FLUSHCACHE

	select ARCH_HAS_UBSAN

	select ARCH_HAVE_NMI_SAFE_CMPXCHG

	select ARCH_HAVE_EXTRA_ELF_NOTES        if SPU_BASE

	select ARCH_KEEP_MEMBLOCK

	select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE	if PPC_RADIX_MMU

	select ARCH_MIGHT_HAVE_PC_PARPORT

arch/powerpc/include/asm/elf.h

+0 −2
Original line number Diff line number Diff line
@@ -127,8 +127,6 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm, 
/* Notes used in ET_CORE. Note name is "SPU/<fd>/<filename>". */

#define NT_SPU		1



#define ARCH_HAVE_EXTRA_ELF_NOTES



#endif /* CONFIG_SPU_BASE */



#ifdef CONFIG_PPC64

include/linux/elf.h

+1 −1
Original line number Diff line number Diff line
@@ -65,7 +65,7 @@ extern Elf64_Dyn _DYNAMIC []; 
struct file;

struct coredump_params;



#ifndef ARCH_HAVE_EXTRA_ELF_NOTES

#ifndef CONFIG_ARCH_HAVE_EXTRA_ELF_NOTES

static inline int elf_coredump_extra_notes_size(void) { return 0; }

static inline int elf_coredump_extra_notes_write(struct coredump_params *cprm) { return 0; }

#else