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| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-06-14 00:18:12 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2021-01-06 08:42:49 -0500 |
| commit | 0bb87f051e4282afb5f472807c7244b21cf515c7 (patch) | |
| tree | 89d3c3bbcd1f78a1a22303d79e931c7812abf29b /arch/mips/Kconfig | |
| parent | 2fb33bec053b01e616fab921aab4d4775d374e8f (diff) | |
| download | linux-0bb87f051e4282afb5f472807c7244b21cf515c7.tar.gz | |
mips compat: switch to compat_binfmt_elf.c
Like amd64, mips has two 32bit ABIs - o32 and n32. Unlike amd64,
it does not use compat_binfmt_elf.c for either of those; each
of those ABIs has a binfmt handler of its own, both very similar
to fs/compat_binfmt_elf.c. And the same technics as we use on
amd64 can be used to make fs/compat_binfmt_elf.c handle both.
* merge elfo32_check_arch() with elfn32_check_arch(),
make that serve as compat_elf_check_arch(). Note that
SET_PERSONALITY2() is already the same for all ABI variants -
it looks at the elf header to choose the flags to set.
* add asm/elfcore-compat.h, using the bigger (n32) variant
of elf32_prstatus as compat_elf_prstatus there.
* make PRSTATUS_SIZE() and SET_PR_FPVALID() choose the
right layout, same as done for amd64. test_thread_flag(TIF_32BIT_REGS)
is used as the predicate.
Voila - we are rid of binfmt_elf{n,o}32.c; fs/compat_binfmt_elf.c is
used, same as for all other ELF-supporting 64bit architectures that
need 32bit compat.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/mips/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 04aecf51e376..a46423f1cabc 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -92,6 +92,7 @@ config MIPS select SET_FS select SYSCTL_EXCEPTION_TRACE select VIRT_TO_BUS + select ARCH_HAS_ELFCORE_COMPAT config MIPS_FIXUP_BIGPHYS_ADDR bool @@ -3277,6 +3278,7 @@ config MIPS32_O32 select ARCH_WANT_OLD_COMPAT_IPC select COMPAT select MIPS32_COMPAT + select COMPAT_BINFMT_ELF select SYSVIPC_COMPAT if SYSVIPC help Select this option if you want to run o32 binaries. These are pure @@ -3290,6 +3292,7 @@ config MIPS32_N32 depends on 64BIT select ARCH_WANT_COMPAT_IPC_PARSE_VERSION select COMPAT + select COMPAT_BINFMT_ELF select MIPS32_COMPAT select SYSVIPC_COMPAT if SYSVIPC help @@ -3300,11 +3303,6 @@ config MIPS32_N32 If unsure, say N. -config BINFMT_ELF32 - bool - default y if MIPS32_O32 || MIPS32_N32 - select ELFCORE - menu "Power management options" config ARCH_HIBERNATION_POSSIBLE |