x86/asm/64: Add ENDs to some functions and relabel with SYM_CODE_*

All these are functions which are invoked from elsewhere but they are
not typical C functions. So annotate them using the new SYM_CODE_START.
All these were not balanced with any END, so mark their ends by
SYM_CODE_END appropriately too.

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]
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [power mgmt]
Cc: Andy Shevchenko <andy@infradead.org>
Cc: Cao jin <caoj.fnst@cn.fujitsu.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Pingfan Liu <kernelfans@gmail.com>
Cc: platform-driver-x86@vger.kernel.org
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Huang <wei@redhat.com>
Cc: x86-ml <x86@kernel.org>
Cc: xen-devel@lists.xenproject.org
Cc: Xiaoyao Li <xiaoyao.li@linux.intel.com>
Link: https://lkml.kernel.org/r/20191011115108.12392-23-jslaby@suse.cz

diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index ca762ea..5580046 100644 (file)
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -250,7 +250,7 @@ ENDPROC(efi32_stub_entry)
 
        .code64
        .org 0x200
-ENTRY(startup_64)
+SYM_CODE_START(startup_64)
        /*
         * 64bit entry is 0x200 and it is ABI so immutable!
         * We come here either from startup_32 or directly from a
@@ -442,6 +442,7 @@ trampoline_return:
  */
        leaq    .Lrelocated(%rbx), %rax
        jmp     *%rax
+SYM_CODE_END(startup_64)
 
 #ifdef CONFIG_EFI_STUB
 
@@ -571,7 +572,7 @@ SYM_FUNC_END(.Lrelocated)
  * ECX contains the base address of the trampoline memory.
  * Non zero RDX means trampoline needs to enable 5-level paging.
  */
-ENTRY(trampoline_32bit_src)
+SYM_CODE_START(trampoline_32bit_src)
        /* Set up data and stack segments */
        movl    $__KERNEL_DS, %eax
        movl    %eax, %ds
@@ -634,6 +635,7 @@ ENTRY(trampoline_32bit_src)
        movl    %eax, %cr0
 
        lret
+SYM_CODE_END(trampoline_32bit_src)
 
        .code64
 SYM_FUNC_START_LOCAL_NOALIGN(.Lpaging_enabled)

diff --git a/arch/x86/platform/olpc/xo1-wakeup.S b/arch/x86/platform/olpc/xo1-wakeup.S
index 5fee3a2..75f4faf 100644 (file)
--- a/arch/x86/platform/olpc/xo1-wakeup.S
+++ b/arch/x86/platform/olpc/xo1-wakeup.S
@@ -90,7 +90,7 @@ restore_registers:
 
        ret
 
-ENTRY(do_olpc_suspend_lowlevel)
+SYM_CODE_START(do_olpc_suspend_lowlevel)
        call    save_processor_state
        call    save_registers
 
@@ -110,6 +110,7 @@ ret_point:
        call    restore_registers
        call    restore_processor_state
        ret
+SYM_CODE_END(do_olpc_suspend_lowlevel)
 
 .data
 saved_gdt:             .long   0,0

diff --git a/arch/x86/power/hibernate_asm_64.S b/arch/x86/power/hibernate_asm_64.S
index a4d5eb0..4057cd5 100644 (file)
--- a/arch/x86/power/hibernate_asm_64.S
+++ b/arch/x86/power/hibernate_asm_64.S
@@ -52,7 +52,7 @@ ENTRY(swsusp_arch_suspend)
        ret
 ENDPROC(swsusp_arch_suspend)
 
-ENTRY(restore_image)
+SYM_CODE_START(restore_image)
        /* prepare to jump to the image kernel */
        movq    restore_jump_address(%rip), %r8
        movq    restore_cr3(%rip), %r9
@@ -67,9 +67,10 @@ ENTRY(restore_image)
        /* jump to relocated restore code */
        movq    relocated_restore_code(%rip), %rcx
        jmpq    *%rcx
+SYM_CODE_END(restore_image)
 
        /* code below has been relocated to a safe page */
-ENTRY(core_restore_code)
+SYM_CODE_START(core_restore_code)
        /* switch to temporary page tables */
        movq    %rax, %cr3
        /* flush TLB */
@@ -97,6 +98,7 @@ ENTRY(core_restore_code)
 .Ldone:
        /* jump to the restore_registers address from the image header */
        jmpq    *%r8
+SYM_CODE_END(core_restore_code)
 
         /* code below belongs to the image kernel */
        .align PAGE_SIZE

diff --git a/arch/x86/realmode/rm/reboot.S b/arch/x86/realmode/rm/reboot.S
index 424826a..f10515b 100644 (file)
--- a/arch/x86/realmode/rm/reboot.S
+++ b/arch/x86/realmode/rm/reboot.S
@@ -19,7 +19,7 @@
  */
        .section ".text32", "ax"
        .code32
-ENTRY(machine_real_restart_asm)
+SYM_CODE_START(machine_real_restart_asm)
 
 #ifdef CONFIG_X86_64
        /* Switch to trampoline GDT as it is guaranteed < 4 GiB */
@@ -63,6 +63,7 @@ SYM_INNER_LABEL(machine_real_restart_paging_off, SYM_L_GLOBAL)
        movl    %ecx, %gs
        movl    %ecx, %ss
        ljmpw   $8, $1f
+SYM_CODE_END(machine_real_restart_asm)
 
 /*
  * This is 16-bit protected mode code to disable paging and the cache,

diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S
index c1aeab1..251758e 100644 (file)
--- a/arch/x86/realmode/rm/trampoline_64.S
+++ b/arch/x86/realmode/rm/trampoline_64.S
@@ -38,7 +38,7 @@
        .code16
 
        .balign PAGE_SIZE
-ENTRY(trampoline_start)
+SYM_CODE_START(trampoline_start)
        cli                     # We should be safe anyway
        wbinvd
 
@@ -78,12 +78,14 @@ ENTRY(trampoline_start)
 no_longmode:
        hlt
        jmp no_longmode
+SYM_CODE_END(trampoline_start)
+
 #include "../kernel/verify_cpu.S"
 
        .section ".text32","ax"
        .code32
        .balign 4
-ENTRY(startup_32)
+SYM_CODE_START(startup_32)
        movl    %edx, %ss
        addl    $pa_real_mode_base, %esp
        movl    %edx, %ds
@@ -137,13 +139,15 @@ ENTRY(startup_32)
         * the new gdt/idt that has __KERNEL_CS with CS.L = 1.
         */
        ljmpl   $__KERNEL_CS, $pa_startup_64
+SYM_CODE_END(startup_32)
 
        .section ".text64","ax"
        .code64
        .balign 4
-ENTRY(startup_64)
+SYM_CODE_START(startup_64)
        # Now jump into the kernel using virtual addresses
        jmpq    *tr_start(%rip)
+SYM_CODE_END(startup_64)
 
        .section ".rodata","a"
        # Duplicate the global descriptor table

diff --git a/arch/x86/realmode/rm/wakeup_asm.S b/arch/x86/realmode/rm/wakeup_asm.S
index 01092d6..02d0ba1 100644 (file)
--- a/arch/x86/realmode/rm/wakeup_asm.S
+++ b/arch/x86/realmode/rm/wakeup_asm.S
@@ -37,7 +37,7 @@ SYM_DATA_END(wakeup_header)
        .code16
 
        .balign 16
-ENTRY(wakeup_start)
+SYM_CODE_START(wakeup_start)
        cli
        cld
 
@@ -135,6 +135,7 @@ ENTRY(wakeup_start)
 #else
        jmp     trampoline_start
 #endif
+SYM_CODE_END(wakeup_start)
 
 bogus_real_magic:
 1:

diff --git a/arch/x86/xen/xen-asm_64.S b/arch/x86/xen/xen-asm_64.S
index 45c1249..c209c70 100644 (file)
--- a/arch/x86/xen/xen-asm_64.S
+++ b/arch/x86/xen/xen-asm_64.S
@@ -85,11 +85,12 @@ hypercall_iret = hypercall_page + __HYPERVISOR_iret * 32
  *     r11             }<-- pushed by hypercall page
  * rsp->rax            }
  */
-ENTRY(xen_iret)
+SYM_CODE_START(xen_iret)
        pushq $0
        jmp hypercall_iret
+SYM_CODE_END(xen_iret)
 
-ENTRY(xen_sysret64)
+SYM_CODE_START(xen_sysret64)
        /*
         * We're already on the usermode stack at this point, but
         * still with the kernel gs, so we can easily switch back.
@@ -107,6 +108,7 @@ ENTRY(xen_sysret64)
 
        pushq $VGCF_in_syscall
        jmp hypercall_iret
+SYM_CODE_END(xen_sysret64)
 
 /*
  * Xen handles syscall callbacks much like ordinary exceptions, which