Searched hist:"2 e958a8a" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/arch/x86/entry/ |
| H A D | syscall_x32.c | 2e958a8a Mon May 17 02:38:09 CDT 2021 Masahiro Yamada <masahiroy@kernel.org> x86/entry/x32: Rename __x32_compat_sys_* to __x64_compat_sys_*
The SYSCALL macros are mapped to symbols as follows:
__SYSCALL_COMMON(nr, sym) --> __x64_<sym>
__SYSCALL_X32(nr, sym) --> __x32_<sym>
Originally, the syscalls in the x32 special range (512-547) were all
compat.
This assumption is now broken after the following commits:
55db9c0e8534 ("net: remove compat_sys_{get,set}sockopt")
5f764d624a89 ("fs: remove the compat readv/writev syscalls")
598b3cec831f ("fs: remove compat_sys_vmsplice")
c3973b401ef2 ("mm: remove compat_process_vm_{readv,writev}")
Those commits redefined __x32_sys_* to __x64_sys_* because there is no stub
like __x32_sys_*.
Defining them as follows is more sensible and cleaner.
__SYSCALL_COMMON(nr, sym) --> __x64_<sym>
__SYSCALL_X32(nr, sym) --> __x64_<sym>
This works because both x86_64 and x32 use the same ABI (RDI, RSI, RDX,
R10, R8, R9)
The ugly #define __x32_sys_* will go away.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210517073815.97426-2-masahiroy@kernel.org
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| /openbmc/linux/arch/x86/include/asm/ |
| H A D | syscall_wrapper.h | 2e958a8a Mon May 17 02:38:09 CDT 2021 Masahiro Yamada <masahiroy@kernel.org> x86/entry/x32: Rename __x32_compat_sys_* to __x64_compat_sys_*
The SYSCALL macros are mapped to symbols as follows:
__SYSCALL_COMMON(nr, sym) --> __x64_<sym>
__SYSCALL_X32(nr, sym) --> __x32_<sym>
Originally, the syscalls in the x32 special range (512-547) were all
compat.
This assumption is now broken after the following commits:
55db9c0e8534 ("net: remove compat_sys_{get,set}sockopt")
5f764d624a89 ("fs: remove the compat readv/writev syscalls")
598b3cec831f ("fs: remove compat_sys_vmsplice")
c3973b401ef2 ("mm: remove compat_process_vm_{readv,writev}")
Those commits redefined __x32_sys_* to __x64_sys_* because there is no stub
like __x32_sys_*.
Defining them as follows is more sensible and cleaner.
__SYSCALL_COMMON(nr, sym) --> __x64_<sym>
__SYSCALL_X32(nr, sym) --> __x64_<sym>
This works because both x86_64 and x32 use the same ABI (RDI, RSI, RDX,
R10, R8, R9)
The ugly #define __x32_sys_* will go away.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210517073815.97426-2-masahiroy@kernel.org
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