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x86/syscall: Move sys_ni_syscall()

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Move sys_ni_syscall() to kernel/process.c, and remove the now empty
entry/common.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/20250314151220.862768-6-brgerst@gmail.com
This commit is contained in:
Brian Gerst
2025-03-14 11:12:18 -04:00
committed by Ingo Molnar
parent 21832247f2
commit 9a93e29f16
3 changed files with 5 additions and 41 deletions
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3
arch/x86/entry/Makefile
View File

@@ -7,16 +7,13 @@ KASAN_SANITIZE := n
UBSAN_SANITIZE := n
KCOV_INSTRUMENT := n
CFLAGS_REMOVE_common.o = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_syscall_32.o = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_syscall_64.o = $(CC_FLAGS_FTRACE)
CFLAGS_common.o += -fno-stack-protector
CFLAGS_syscall_32.o += -fno-stack-protector
CFLAGS_syscall_64.o += -fno-stack-protector
obj-y := entry.o entry_$(BITS).o syscall_$(BITS).o
obj-y += common.o
obj-y += vdso/
obj-y += vsyscall/

38
arch/x86/entry/common.c
View File

@@ -1,38 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* common.c - C code for kernel entry and exit
* Copyright (c) 2015 Andrew Lutomirski
*
* Based on asm and ptrace code by many authors. The code here originated
* in ptrace.c and signal.c.
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/sched/task_stack.h>
#include <linux/entry-common.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/export.h>
#include <linux/nospec.h>
#include <linux/syscalls.h>
#include <linux/uaccess.h>
#include <linux/init.h>
#include <asm/apic.h>
#include <asm/desc.h>
#include <asm/traps.h>
#include <asm/vdso.h>
#include <asm/cpufeature.h>
#include <asm/fpu/api.h>
#include <asm/nospec-branch.h>
#include <asm/io_bitmap.h>
#include <asm/syscall.h>
#include <asm/irq_stack.h>
SYSCALL_DEFINE0(ni_syscall)
{
return -ENOSYS;
}

5
arch/x86/kernel/process.c
View File

@@ -1063,3 +1063,8 @@ SYSCALL_DEFINE2(arch_prctl, int, option, unsigned long, arg2)
return -EINVAL;
}
SYSCALL_DEFINE0(ni_syscall)
{
return -ENOSYS;
}