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x86/asm/64: Change all ENTRY+END to SYM_CODE_*

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Change all assembly code which is marked using END (and not ENDPROC).
Switch all these to the appropriate new annotation SYM_CODE_START and
SYM_CODE_END.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> [xen bits]
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Cao jin <caoj.fnst@cn.fujitsu.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: linux-arch@vger.kernel.org
Cc: Maran Wilson <maran.wilson@oracle.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Cc: xen-devel@lists.xenproject.org
Link: https://lkml.kernel.org/r/20191011115108.12392-24-jslaby@suse.cz
This commit is contained in:
Jiri Slaby 2019-10-11 13:51:03 +02:00 committed by Borislav Petkov
parent 4aec216b93
commit bc7b11c04e
6 changed files with 46 additions and 46 deletions
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52
arch/x86/entry/entry_64.S
View File

@ -46,11 +46,11 @@
.section .entry.text, "ax"
#ifdef CONFIG_PARAVIRT
ENTRY(native_usergs_sysret64)
SYM_CODE_START(native_usergs_sysret64)
UNWIND_HINT_EMPTY
swapgs
sysretq
END(native_usergs_sysret64)
SYM_CODE_END(native_usergs_sysret64)
#endif /* CONFIG_PARAVIRT */
.macro TRACE_IRQS_FLAGS flags:req
@ -142,7 +142,7 @@ END(native_usergs_sysret64)
* with them due to bugs in both AMD and Intel CPUs.
*/
ENTRY(entry_SYSCALL_64)
SYM_CODE_START(entry_SYSCALL_64)
UNWIND_HINT_EMPTY
/*
* Interrupts are off on entry.
@ -273,13 +273,13 @@ syscall_return_via_sysret:
popq %rdi
popq %rsp
USERGS_SYSRET64
END(entry_SYSCALL_64)
SYM_CODE_END(entry_SYSCALL_64)
/*
* %rdi: prev task
* %rsi: next task
*/
ENTRY(__switch_to_asm)
SYM_CODE_START(__switch_to_asm)
UNWIND_HINT_FUNC
/*
* Save callee-saved registers
@ -321,7 +321,7 @@ ENTRY(__switch_to_asm)
popq %rbp
jmp __switch_to
END(__switch_to_asm)
SYM_CODE_END(__switch_to_asm)
/*
* A newly forked process directly context switches into this address.
@ -330,7 +330,7 @@ END(__switch_to_asm)
* rbx: kernel thread func (NULL for user thread)
* r12: kernel thread arg
*/
ENTRY(ret_from_fork)
SYM_CODE_START(ret_from_fork)
UNWIND_HINT_EMPTY
movq %rax, %rdi
call schedule_tail /* rdi: 'prev' task parameter */
@ -357,14 +357,14 @@ ENTRY(ret_from_fork)
*/
movq $0, RAX(%rsp)
jmp 2b
END(ret_from_fork)
SYM_CODE_END(ret_from_fork)
/*
* Build the entry stubs with some assembler magic.
* We pack 1 stub into every 8-byte block.
*/
.align 8
ENTRY(irq_entries_start)
SYM_CODE_START(irq_entries_start)
vector=FIRST_EXTERNAL_VECTOR
.rept (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR)
UNWIND_HINT_IRET_REGS
@ -373,10 +373,10 @@ ENTRY(irq_entries_start)
.align 8
vector=vector+1
.endr
END(irq_entries_start)
SYM_CODE_END(irq_entries_start)
.align 8
ENTRY(spurious_entries_start)
SYM_CODE_START(spurious_entries_start)
vector=FIRST_SYSTEM_VECTOR
.rept (NR_VECTORS - FIRST_SYSTEM_VECTOR)
UNWIND_HINT_IRET_REGS
@ -385,7 +385,7 @@ ENTRY(spurious_entries_start)
.align 8
vector=vector+1
.endr
END(spurious_entries_start)
SYM_CODE_END(spurious_entries_start)
.macro DEBUG_ENTRY_ASSERT_IRQS_OFF
#ifdef CONFIG_DEBUG_ENTRY
@ -511,7 +511,7 @@ END(spurious_entries_start)
* | return address |
* +----------------------------------------------------+
*/
ENTRY(interrupt_entry)
SYM_CODE_START(interrupt_entry)
UNWIND_HINT_FUNC
ASM_CLAC
cld
@ -579,7 +579,7 @@ ENTRY(interrupt_entry)
TRACE_IRQS_OFF
ret
END(interrupt_entry)
SYM_CODE_END(interrupt_entry)
_ASM_NOKPROBE(interrupt_entry)
@ -795,7 +795,7 @@ _ASM_NOKPROBE(common_interrupt)
* APIC interrupts.
*/
.macro apicinterrupt3 num sym do_sym
ENTRY(\sym)
SYM_CODE_START(\sym)
UNWIND_HINT_IRET_REGS
pushq $~(\num)
.Lcommon_\sym:
@ -803,7 +803,7 @@ ENTRY(\sym)
UNWIND_HINT_REGS indirect=1
call \do_sym /* rdi points to pt_regs */
jmp ret_from_intr
END(\sym)
SYM_CODE_END(\sym)
_ASM_NOKPROBE(\sym)
.endm
@ -968,7 +968,7 @@ apicinterrupt IRQ_WORK_VECTOR irq_work_interrupt smp_irq_work_interrupt
* #DF: if the thread stack is somehow unusable, we'll still get a useful OOPS.
*/
.macro idtentry sym do_sym has_error_code:req paranoid=0 shift_ist=-1 ist_offset=0 create_gap=0 read_cr2=0
ENTRY(\sym)
SYM_CODE_START(\sym)
UNWIND_HINT_IRET_REGS offset=\has_error_code*8
/* Sanity check */
@ -1018,7 +1018,7 @@ ENTRY(\sym)
.endif
_ASM_NOKPROBE(\sym)
END(\sym)
SYM_CODE_END(\sym)
.endm
idtentry divide_error do_divide_error has_error_code=0
@ -1135,7 +1135,7 @@ SYM_CODE_END(xen_do_hypervisor_callback)
* We distinguish between categories by comparing each saved segment register
* with its current contents: any discrepancy means we in category 1.
*/
ENTRY(xen_failsafe_callback)
SYM_CODE_START(xen_failsafe_callback)
UNWIND_HINT_EMPTY
movl %ds, %ecx
cmpw %cx, 0x10(%rsp)
@ -1165,7 +1165,7 @@ ENTRY(xen_failsafe_callback)
PUSH_AND_CLEAR_REGS
ENCODE_FRAME_POINTER
jmp error_exit
END(xen_failsafe_callback)
SYM_CODE_END(xen_failsafe_callback)
#endif /* CONFIG_XEN_PV */
#ifdef CONFIG_XEN_PVHVM
@ -1384,7 +1384,7 @@ SYM_CODE_END(error_exit)
* %r14: Used to save/restore the CR3 of the interrupted context
* when PAGE_TABLE_ISOLATION is in use. Do not clobber.
*/
ENTRY(nmi)
SYM_CODE_START(nmi)
UNWIND_HINT_IRET_REGS
/*
@ -1719,21 +1719,21 @@ nmi_restore:
* about espfix64 on the way back to kernel mode.
*/
iretq
END(nmi)
SYM_CODE_END(nmi)
#ifndef CONFIG_IA32_EMULATION
/*
* This handles SYSCALL from 32-bit code. There is no way to program
* MSRs to fully disable 32-bit SYSCALL.
*/
ENTRY(ignore_sysret)
SYM_CODE_START(ignore_sysret)
UNWIND_HINT_EMPTY
mov $-ENOSYS, %eax
sysret
END(ignore_sysret)
SYM_CODE_END(ignore_sysret)
#endif
ENTRY(rewind_stack_do_exit)
SYM_CODE_START(rewind_stack_do_exit)
UNWIND_HINT_FUNC
/* Prevent any naive code from trying to unwind to our caller. */
xorl %ebp, %ebp
@ -1743,4 +1743,4 @@ ENTRY(rewind_stack_do_exit)
UNWIND_HINT_FUNC sp_offset=PTREGS_SIZE
call do_exit
END(rewind_stack_do_exit)
SYM_CODE_END(rewind_stack_do_exit)

8
arch/x86/entry/entry_64_compat.S
View File

@ -196,7 +196,7 @@ ENDPROC(entry_SYSENTER_compat)
* esp user stack
* 0(%esp) arg6
*/
ENTRY(entry_SYSCALL_compat)
SYM_CODE_START(entry_SYSCALL_compat)
/* Interrupts are off on entry. */
swapgs
@ -311,7 +311,7 @@ sysret32_from_system_call:
xorl %r10d, %r10d
swapgs
sysretl
END(entry_SYSCALL_compat)
SYM_CODE_END(entry_SYSCALL_compat)
/*
* 32-bit legacy system call entry.
@ -339,7 +339,7 @@ END(entry_SYSCALL_compat)
* edi arg5
* ebp arg6
*/
ENTRY(entry_INT80_compat)
SYM_CODE_START(entry_INT80_compat)
/*
* Interrupts are off on entry.
*/
@ -416,4 +416,4 @@ ENTRY(entry_INT80_compat)
/* Go back to user mode. */
TRACE_IRQS_ON
jmp swapgs_restore_regs_and_return_to_usermode
END(entry_INT80_compat)
SYM_CODE_END(entry_INT80_compat)

4
arch/x86/kernel/ftrace_64.S
View File

@ -296,7 +296,7 @@ ENTRY(ftrace_graph_caller)
retq
ENDPROC(ftrace_graph_caller)
ENTRY(return_to_handler)
SYM_CODE_START(return_to_handler)
UNWIND_HINT_EMPTY
subq $24, %rsp
@ -312,5 +312,5 @@ ENTRY(return_to_handler)
movq (%rsp), %rax
addq $24, %rsp
JMP_NOSPEC %rdi
END(return_to_handler)
SYM_CODE_END(return_to_handler)
#endif

12
arch/x86/kernel/head_64.S
View File

@ -91,7 +91,7 @@ SYM_CODE_START_NOALIGN(startup_64)
jmp 1f
SYM_CODE_END(startup_64)
ENTRY(secondary_startup_64)
SYM_CODE_START(secondary_startup_64)
UNWIND_HINT_EMPTY
/*
* At this point the CPU runs in 64bit mode CS.L = 1 CS.D = 0,
@ -241,7 +241,7 @@ ENTRY(secondary_startup_64)
pushq %rax # target address in negative space
lretq
.Lafter_lret:
END(secondary_startup_64)
SYM_CODE_END(secondary_startup_64)
#include "verify_cpu.S"
@ -251,11 +251,11 @@ END(secondary_startup_64)
* up already except stack. We just set up stack here. Then call
* start_secondary() via .Ljump_to_C_code.
*/
ENTRY(start_cpu0)
SYM_CODE_START(start_cpu0)
UNWIND_HINT_EMPTY
movq initial_stack(%rip), %rsp
jmp .Ljump_to_C_code
END(start_cpu0)
SYM_CODE_END(start_cpu0)
#endif
/* Both SMP bootup and ACPI suspend change these variables */
@ -272,7 +272,7 @@ SYM_DATA(initial_stack, .quad init_thread_union + THREAD_SIZE - SIZEOF_PTREGS)
__FINITDATA
__INIT
ENTRY(early_idt_handler_array)
SYM_CODE_START(early_idt_handler_array)
i = 0
.rept NUM_EXCEPTION_VECTORS
.if ((EXCEPTION_ERRCODE_MASK >> i) & 1) == 0
@ -288,7 +288,7 @@ ENTRY(early_idt_handler_array)
.fill early_idt_handler_array + i*EARLY_IDT_HANDLER_SIZE - ., 1, 0xcc
.endr
UNWIND_HINT_IRET_REGS offset=16
END(early_idt_handler_array)
SYM_CODE_END(early_idt_handler_array)
SYM_CODE_START_LOCAL(early_idt_handler_common)
/*

8
arch/x86/xen/xen-asm_64.S
View File

@ -20,11 +20,11 @@
#include <linux/linkage.h>
.macro xen_pv_trap name
ENTRY(xen_\name)
SYM_CODE_START(xen_\name)
pop %rcx
pop %r11
jmp \name
END(xen_\name)
SYM_CODE_END(xen_\name)
_ASM_NOKPROBE(xen_\name)
.endm
@ -57,7 +57,7 @@ xen_pv_trap entry_INT80_compat
xen_pv_trap hypervisor_callback
__INIT
ENTRY(xen_early_idt_handler_array)
SYM_CODE_START(xen_early_idt_handler_array)
i = 0
.rept NUM_EXCEPTION_VECTORS
pop %rcx
@ -66,7 +66,7 @@ ENTRY(xen_early_idt_handler_array)
i = i + 1
.fill xen_early_idt_handler_array + i*XEN_EARLY_IDT_HANDLER_SIZE - ., 1, 0xcc
.endr
END(xen_early_idt_handler_array)
SYM_CODE_END(xen_early_idt_handler_array)
__FINIT
hypercall_iret = hypercall_page + __HYPERVISOR_iret * 32

8
arch/x86/xen/xen-head.S
View File

@ -22,7 +22,7 @@
#ifdef CONFIG_XEN_PV
__INIT
ENTRY(startup_xen)
SYM_CODE_START(startup_xen)
UNWIND_HINT_EMPTY
cld
@ -52,13 +52,13 @@ ENTRY(startup_xen)
#endif
jmp xen_start_kernel
END(startup_xen)
SYM_CODE_END(startup_xen)
__FINIT
#endif
.pushsection .text
.balign PAGE_SIZE
ENTRY(hypercall_page)
SYM_CODE_START(hypercall_page)
.rept (PAGE_SIZE / 32)
UNWIND_HINT_EMPTY
.skip 32
@ -69,7 +69,7 @@ ENTRY(hypercall_page)
.type xen_hypercall_##n, @function; .size xen_hypercall_##n, 32
#include <asm/xen-hypercalls.h>
#undef HYPERCALL
END(hypercall_page)
SYM_CODE_END(hypercall_page)
.popsection
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz "linux")