x86/syscall: Move sys_ni_syscall()

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

diff --git a/arch/x86/entry/Makefile b/arch/x86/entry/Makefile
index e870f8aa936c46d39b919301a9eb6e0e960750e9..72cae8e0ce856412c02a8009aabebb9c3037e6d9 100644 (file)
--- a/arch/x86/entry/Makefile
+++ b/arch/x86/entry/Makefile
@@ -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/

diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
deleted file mode 100644 (file)
index 5bd448c..0000000
--- a/arch/x86/entry/common.c
+++ /dev/null
@@ -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;
-}

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 0f398a42c1e2042c0e5c8d1d5fae6d7573779445..5452237fabd4f849192aaf579ae0928f59458b00 100644 (file)
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -1063,3 +1063,8 @@ SYSCALL_DEFINE2(arch_prctl, int, option, unsigned long, arg2)
 
        return -EINVAL;
 }
+
+SYSCALL_DEFINE0(ni_syscall)
+{
+       return -ENOSYS;
+}