Commit 2cd23553 authored by Ingo Molnar's avatar Ingo Molnar

x86/asm/entry: Rename compat syscall entry points

Rename the following system call entry points:

	ia32_cstar_target       -> entry_SYSCALL_compat
	ia32_syscall            -> entry_INT80_compat

The generic naming scheme for x86 system call entry points is:

	entry_MNEMONIC_qualifier

where 'qualifier' is one of _32, _64 or _compat.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 138bd56a
......@@ -18,10 +18,10 @@ Some of these entries are:
- system_call: syscall instruction from 64-bit code.
- ia32_syscall: int 0x80 from 32-bit or 64-bit code; compat syscall
- entry_INT80_compat: int 0x80 from 32-bit or 64-bit code; compat syscall
either way.
- ia32_syscall, ia32_sysenter: syscall and sysenter from 32-bit
- entry_INT80_compat, ia32_sysenter: syscall and sysenter from 32-bit
code
- interrupt: An array of entries. Every IDT vector that doesn't
......
......@@ -288,7 +288,7 @@ ENDPROC(ia32_sysenter_target)
* path below. We set up a complete hardware stack frame to share code
* with the int 0x80 path.
*/
ENTRY(ia32_cstar_target)
ENTRY(entry_SYSCALL_compat)
/*
* Interrupts are off on entry.
* We do not frame this tiny irq-off block with TRACE_IRQS_OFF/ON,
......@@ -409,7 +409,7 @@ cstar_tracesys:
RESTORE_EXTRA_REGS
jmp cstar_do_call
END(ia32_cstar_target)
END(entry_SYSCALL_compat)
ia32_badarg:
ASM_CLAC
......@@ -445,7 +445,7 @@ ia32_ret_from_sys_call:
* Assumes it is only called from user space and entered with interrupts off.
*/
ENTRY(ia32_syscall)
ENTRY(entry_INT80_compat)
/*
* Interrupts are off on entry.
* We do not frame this tiny irq-off block with TRACE_IRQS_OFF/ON,
......@@ -511,7 +511,7 @@ ia32_tracesys:
movl %eax, %eax /* zero extension */
RESTORE_EXTRA_REGS
jmp ia32_do_call
END(ia32_syscall)
END(entry_INT80_compat)
.macro PTREGSCALL label, func
ALIGN
......
......@@ -10,7 +10,7 @@
#else
#define SYM(sym, compat) sym
#define ia32_sys_call_table sys_call_table
#define __NR_ia32_syscall_max __NR_syscall_max
#define __NR_entry_INT80_compat_max __NR_syscall_max
#endif
#define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void SYM(sym, compat)(void) ;
......@@ -23,11 +23,11 @@ typedef asmlinkage void (*sys_call_ptr_t)(void);
extern asmlinkage void sys_ni_syscall(void);
__visible const sys_call_ptr_t ia32_sys_call_table[__NR_ia32_syscall_max+1] = {
__visible const sys_call_ptr_t ia32_sys_call_table[__NR_entry_INT80_compat_max+1] = {
/*
* Smells like a compiler bug -- it doesn't work
* when the & below is removed.
*/
[0 ... __NR_ia32_syscall_max] = &sys_ni_syscall,
[0 ... __NR_entry_INT80_compat_max] = &sys_ni_syscall,
#include <asm/syscalls_32.h>
};
......@@ -8,8 +8,8 @@
void system_call(void);
void syscall_init(void);
void ia32_syscall(void);
void ia32_cstar_target(void);
void entry_INT80_compat(void);
void entry_SYSCALL_compat(void);
void ia32_sysenter_target(void);
void x86_configure_nx(void);
......
......@@ -66,7 +66,7 @@ int main(void)
DEFINE(__NR_syscall_max, sizeof(syscalls_64) - 1);
DEFINE(NR_syscalls, sizeof(syscalls_64));
DEFINE(__NR_ia32_syscall_max, sizeof(syscalls_ia32) - 1);
DEFINE(__NR_entry_INT80_compat_max, sizeof(syscalls_ia32) - 1);
DEFINE(IA32_NR_syscalls, sizeof(syscalls_ia32));
return 0;
......
......@@ -1207,7 +1207,7 @@ void syscall_init(void)
wrmsrl(MSR_LSTAR, system_call);
#ifdef CONFIG_IA32_EMULATION
wrmsrl(MSR_CSTAR, ia32_cstar_target);
wrmsrl(MSR_CSTAR, entry_SYSCALL_compat);
/*
* This only works on Intel CPUs.
* On AMD CPUs these MSRs are 32-bit, CPU truncates MSR_IA32_SYSENTER_EIP.
......
......@@ -992,7 +992,7 @@ void __init trap_init(void)
set_bit(i, used_vectors);
#ifdef CONFIG_IA32_EMULATION
set_system_intr_gate(IA32_SYSCALL_VECTOR, ia32_syscall);
set_system_intr_gate(IA32_SYSCALL_VECTOR, entry_INT80_compat);
set_bit(IA32_SYSCALL_VECTOR, used_vectors);
#endif
......
......@@ -122,7 +122,7 @@ ENDPROC(xen_syscall_target)
/* 32-bit compat syscall target */
ENTRY(xen_syscall32_target)
undo_xen_syscall
jmp ia32_cstar_target
jmp entry_SYSCALL_compat
ENDPROC(xen_syscall32_target)
/* 32-bit compat sysenter target */
......
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