diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/ia32/ia32entry.S | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/syscalls.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/entry_32.S | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/entry_64.S | 31 | ||||
| -rw-r--r-- | arch/x86/kernel/ioport.c | 3 | ||||
| -rw-r--r-- | arch/x86/syscalls/syscall_32.tbl | 2 | ||||
| -rw-r--r-- | arch/x86/um/sys_call_table_32.c | 1 |
7 files changed, 17 insertions, 24 deletions
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S index 102ff7cb3e41..74bc91e3612b 100644 --- a/arch/x86/ia32/ia32entry.S +++ b/arch/x86/ia32/ia32entry.S @@ -467,7 +467,6 @@ GLOBAL(\label) PTREGSCALL stub32_execve, compat_sys_execve, %rcx PTREGSCALL stub32_fork, sys_fork, %rdi PTREGSCALL stub32_vfork, sys_vfork, %rdi - PTREGSCALL stub32_iopl, sys_iopl, %rsi ALIGN GLOBAL(stub32_clone) diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h index 58b7e3eac0ae..76be6f2d980c 100644 --- a/arch/x86/include/asm/syscalls.h +++ b/arch/x86/include/asm/syscalls.h @@ -18,7 +18,7 @@ /* Common in X86_32 and X86_64 */ /* kernel/ioport.c */ asmlinkage long sys_ioperm(unsigned long, unsigned long, int); -long sys_iopl(unsigned int, struct pt_regs *); +asmlinkage long sys_iopl(unsigned int); /* kernel/ldt.c */ asmlinkage int sys_modify_ldt(int, void __user *, unsigned long); diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 6ed91d9980e2..415c6346d8bf 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -738,7 +738,6 @@ ENTRY(ptregs_##name) ; \ CFI_ENDPROC; \ ENDPROC(ptregs_##name) -PTREGSCALL1(iopl) PTREGSCALL0(sigreturn) PTREGSCALL0(rt_sigreturn) PTREGSCALL2(vm86) diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 2f2f57ac3748..4486fee3999f 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -828,23 +828,6 @@ int_restore_rest: CFI_ENDPROC END(system_call) -/* - * Certain special system calls that need to save a complete full stack frame. - */ - .macro PTREGSCALL label,func,arg -ENTRY(\label) - PARTIAL_FRAME 1 8 /* offset 8: return address */ - subq $REST_SKIP, %rsp - CFI_ADJUST_CFA_OFFSET REST_SKIP - call save_rest - DEFAULT_FRAME 0 8 /* offset 8: return address */ - leaq 8(%rsp), \arg /* pt_regs pointer */ - call \func - jmp ptregscall_common - CFI_ENDPROC -END(\label) - .endm - .macro FORK_LIKE func ENTRY(stub_\func) CFI_STARTPROC @@ -861,10 +844,22 @@ ENTRY(stub_\func) END(stub_\func) .endm + .macro FIXED_FRAME label,func +ENTRY(\label) + CFI_STARTPROC + PARTIAL_FRAME 0 8 /* offset 8: return address */ + FIXUP_TOP_OF_STACK %r11, 8-ARGOFFSET + call \func + RESTORE_TOP_OF_STACK %r11, 8-ARGOFFSET + ret + CFI_ENDPROC +END(\label) + .endm + FORK_LIKE clone FORK_LIKE fork FORK_LIKE vfork - PTREGSCALL stub_iopl, sys_iopl, %rsi + FIXED_FRAME stub_iopl, sys_iopl ENTRY(ptregscall_common) DEFAULT_FRAME 1 8 /* offset 8: return address */ diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c index 8c968974253d..4ddaf66ea35f 100644 --- a/arch/x86/kernel/ioport.c +++ b/arch/x86/kernel/ioport.c @@ -93,8 +93,9 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on) * on system-call entry - see also fork() and the signal handling * code. */ -long sys_iopl(unsigned int level, struct pt_regs *regs) +SYSCALL_DEFINE1(iopl, unsigned int, level) { + struct pt_regs *regs = current_pt_regs(); unsigned int old = (regs->flags >> 12) & 3; struct thread_struct *t = ¤t->thread; diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl index 28e3fa9056ea..aa15a7a94cf7 100644 --- a/arch/x86/syscalls/syscall_32.tbl +++ b/arch/x86/syscalls/syscall_32.tbl @@ -116,7 +116,7 @@ 107 i386 lstat sys_newlstat compat_sys_newlstat 108 i386 fstat sys_newfstat compat_sys_newfstat 109 i386 olduname sys_uname -110 i386 iopl ptregs_iopl stub32_iopl +110 i386 iopl sys_iopl 111 i386 vhangup sys_vhangup 112 i386 idle 113 i386 vm86old ptregs_vm86old sys32_vm86_warning diff --git a/arch/x86/um/sys_call_table_32.c b/arch/x86/um/sys_call_table_32.c index a0c3b0d1a122..5cc2bcefb6ab 100644 --- a/arch/x86/um/sys_call_table_32.c +++ b/arch/x86/um/sys_call_table_32.c @@ -24,7 +24,6 @@ #define old_mmap sys_old_mmap -#define ptregs_iopl sys_iopl #define ptregs_vm86old sys_vm86old #define ptregs_vm86 sys_vm86 |