user/sven/linux.git/kernel/kexec_elf.c, branch v5.7

kexec_elf: support 32 bit ELF files

2019-09-06T21:58:44Z

The powerpc version only supported 64 bit. Add some code to switch decoding of fields during runtime so we can kexec a 32 bit kernel from a 64 bit kernel and vice versa. Signed-off-by: Sven Schnelle Reviewed-by: Thiago Jung Bauermann Signed-off-by: Helge Deller

kexec_elf: remove unused variable in kexec_elf_load()

2019-09-06T21:58:44Z

base was never assigned, so we can remove it. Reviewed-by: Christophe Leroy Reviewed-by: Thiago Jung Bauermann Signed-off-by: Sven Schnelle Signed-off-by: Helge Deller

kexec_elf: remove Elf_Rel macro

2019-09-06T21:58:43Z

It wasn't used anywhere, so lets drop it. Reviewed-by: Christophe Leroy Reviewed-by: Thiago Jung Bauermann Signed-off-by: Sven Schnelle Signed-off-by: Helge Deller

kexec_elf: remove PURGATORY_STACK_SIZE

2019-09-06T21:58:43Z

It's not used anywhere so just drop it. Signed-off-by: Sven Schnelle Reviewed-by: Thiago Jung Bauermann Signed-off-by: Helge Deller

kexec_elf: remove parsing of section headers

2019-09-06T21:58:43Z

We're not using them, so we can drop the parsing. Signed-off-by: Sven Schnelle Reviewed-by: Thiago Jung Bauermann Signed-off-by: Helge Deller

kexec_elf: change order of elf_*_to_cpu() functions

2019-09-06T21:58:43Z

Change the order to have a 64/32/16 order, no functional change. Signed-off-by: Sven Schnelle Reviewed-by: Thiago Jung Bauermann Signed-off-by: Helge Deller

kexec: add KEXEC_ELF

2019-09-06T21:58:43Z

Right now powerpc provides an implementation to read elf files with the kexec_file_load() syscall. Make that available as a public kexec interface so it can be re-used on other architectures. Signed-off-by: Sven Schnelle Reviewed-by: Thiago Jung Bauermann Signed-off-by: Helge Deller