diff options
| author |   Brian Gerst <brgerst@gmail.com> | 2025-03-14 11:12:17 -0400 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2025-03-19 11:19:15 +0100 |
| commit | 21832247f2df4f636b0f2ae6939819e8dd2ed35f (patch) | |
| tree | 61259a0feaaee1b5d293080b6bdec13ba17f5dee | |
| parent | x86/syscall/64: Move 64-bit syscall dispatch code (diff) | |
| download | wireguard-linux-21832247f2df4f636b0f2ae6939819e8dd2ed35f.tar.xz wireguard-linux-21832247f2df4f636b0f2ae6939819e8dd2ed35f.zip | |
x86/syscall/x32: Move x32 syscall table
Since commit:
2e958a8a510d ("x86/entry/x32: Rename __x32_compat_sys_* to __x64_compat_sys_*")
the ABI prefix for x32 syscalls is the same as native 64-bit
syscalls. Move the x32 syscall table to syscall_64.c
No functional changes.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20250314151220.862768-5-brgerst@gmail.com
| -rw-r--r-- | arch/x86/entry/Makefile | 1 | ||||
| -rw-r--r-- | arch/x86/entry/syscall_64.c | 13 | ||||
| -rw-r--r-- | arch/x86/entry/syscall_x32.c | 25 |
3 files changed, 13 insertions, 26 deletions
diff --git a/arch/x86/entry/Makefile b/arch/x86/entry/Makefile index 5fd28abfd5a0..e870f8aa936c 100644 --- a/arch/x86/entry/Makefile +++ b/arch/x86/entry/Makefile @@ -27,4 +27,3 @@ CFLAGS_REMOVE_entry_fred.o += -pg $(CC_FLAGS_FTRACE) obj-$(CONFIG_X86_FRED) += entry_64_fred.o entry_fred.o obj-$(CONFIG_IA32_EMULATION) += entry_64_compat.o syscall_32.o -obj-$(CONFIG_X86_X32_ABI) += syscall_x32.o diff --git a/arch/x86/entry/syscall_64.c b/arch/x86/entry/syscall_64.c index e0c62d5a397c..a05f7be8a0e2 100644 --- a/arch/x86/entry/syscall_64.c +++ b/arch/x86/entry/syscall_64.c @@ -12,6 +12,9 @@ #define __SYSCALL(nr, sym) extern long __x64_##sym(const struct pt_regs *); #define __SYSCALL_NORETURN(nr, sym) extern long __noreturn __x64_##sym(const struct pt_regs *); #include <asm/syscalls_64.h> +#ifdef CONFIG_X86_X32_ABI +#include <asm/syscalls_x32.h> +#endif #undef __SYSCALL #undef __SYSCALL_NORETURN @@ -37,6 +40,16 @@ long x64_sys_call(const struct pt_regs *regs, unsigned int nr) } }; +#ifdef CONFIG_X86_X32_ABI +long x32_sys_call(const struct pt_regs *regs, unsigned int nr) +{ + switch (nr) { + #include <asm/syscalls_x32.h> + default: return __x64_sys_ni_syscall(regs); + } +}; +#endif + static __always_inline bool do_syscall_x64(struct pt_regs *regs, int nr) { /* diff --git a/arch/x86/entry/syscall_x32.c b/arch/x86/entry/syscall_x32.c deleted file mode 100644 index fb77908f44f3..000000000000 --- a/arch/x86/entry/syscall_x32.c +++ /dev/null @@ -1,25 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* System call table for x32 ABI. */ - -#include <linux/linkage.h> -#include <linux/sys.h> -#include <linux/cache.h> -#include <linux/syscalls.h> -#include <asm/syscall.h> - -#define __SYSCALL(nr, sym) extern long __x64_##sym(const struct pt_regs *); -#define __SYSCALL_NORETURN(nr, sym) extern long __noreturn __x64_##sym(const struct pt_regs *); -#include <asm/syscalls_x32.h> -#undef __SYSCALL - -#undef __SYSCALL_NORETURN -#define __SYSCALL_NORETURN __SYSCALL - -#define __SYSCALL(nr, sym) case nr: return __x64_##sym(regs); -long x32_sys_call(const struct pt_regs *regs, unsigned int nr) -{ - switch (nr) { - #include <asm/syscalls_x32.h> - default: return __x64_sys_ni_syscall(regs); - } -}; |