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| author | Gabriel Krisman Bertazi <krisman@collabora.com> | 2020-10-03 23:25:32 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-10-26 13:46:46 +0100 |
| commit | 2424b14605c71a7187c14edd525044eb36bdea47 (patch) | |
| tree | ba9a94d548fafade96dddbe8bf64c29ebd7f2332 /fs/binfmt_elf.c | |
| parent | bc3d7bf61a9eaecccc84dc2ecc2a9a3fa4f5ec47 (diff) | |
| download | lwn-2424b14605c71a7187c14edd525044eb36bdea47.tar.gz lwn-2424b14605c71a7187c14edd525044eb36bdea47.zip | |
x86/elf: Use e_machine to select start_thread for x32
Since TIF_X32 is going away, avoid using it to find the ELF type in
compat_start_thread.
According to SysV AMD64 ABI Draft, an AMD64 ELF object using ILP32 must
have ELFCLASS32 with (E_MACHINE == EM_X86_64), so use that ELF field to
differentiate a x32 object from a IA32 object when executing start_thread()
in compat mode.
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20201004032536.1229030-7-krisman@collabora.com
Diffstat (limited to 'fs/binfmt_elf.c')
0 files changed, 0 insertions, 0 deletions