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Subject[PATCH 12/18] x86 vDSO: ia32_sysenter_target
Date

This harmonizes the name for the entry point from the 32-bit sysenter
instruction across 32-bit and 64-bit kernels.

Signed-off-by: Roland McGrath <roland@redhat.com>
---
arch/x86/kernel/entry_32.S | 10 +++++-----
arch/x86/vdso/vdso32-setup.c | 4 ++--
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index dc7f938..388786c 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -283,7 +283,7 @@ END(resume_kernel)
the vsyscall page. See vsyscall-sysentry.S, which defines the symbol. */

# sysenter call handler stub
-ENTRY(sysenter_entry)
+ENTRY(ia32_sysenter_target)
CFI_STARTPROC simple
CFI_SIGNAL_FRAME
CFI_DEF_CFA esp, 0
@@ -360,7 +360,7 @@ sysenter_past_esp:
.align 4
.long 1b,2b
.popsection
-ENDPROC(sysenter_entry)
+ENDPROC(ia32_sysenter_target)

# system call handler stub
ENTRY(system_call)
@@ -768,7 +768,7 @@ label: \

KPROBE_ENTRY(debug)
RING0_INT_FRAME
- cmpl $sysenter_entry,(%esp)
+ cmpl $ia32_sysenter_target,(%esp)
jne debug_stack_correct
FIX_STACK(12, debug_stack_correct, debug_esp_fix_insn)
debug_stack_correct:
@@ -799,7 +799,7 @@ KPROBE_ENTRY(nmi)
popl %eax
CFI_ADJUST_CFA_OFFSET -4
je nmi_espfix_stack
- cmpl $sysenter_entry,(%esp)
+ cmpl $ia32_sysenter_target,(%esp)
je nmi_stack_fixup
pushl %eax
CFI_ADJUST_CFA_OFFSET 4
@@ -812,7 +812,7 @@ KPROBE_ENTRY(nmi)
popl %eax
CFI_ADJUST_CFA_OFFSET -4
jae nmi_stack_correct
- cmpl $sysenter_entry,12(%esp)
+ cmpl $ia32_sysenter_target,12(%esp)
je nmi_debug_stack_check
nmi_stack_correct:
/* We have a RING0_INT_FRAME here */
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
index 85c52d2..fb71a93 100644
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -54,7 +54,7 @@ static int __init vdso_setup(char *s)

__setup("vdso=", vdso_setup);

-extern asmlinkage void sysenter_entry(void);
+extern asmlinkage void ia32_sysenter_target(void);

static __init void reloc_symtab(Elf32_Ehdr *ehdr,
unsigned offset, unsigned size)
@@ -187,7 +187,7 @@ void enable_sep_cpu(void)
tss->x86_tss.esp1 = sizeof(struct tss_struct) + (unsigned long) tss;
wrmsr(MSR_IA32_SYSENTER_CS, __KERNEL_CS, 0);
wrmsr(MSR_IA32_SYSENTER_ESP, tss->x86_tss.esp1, 0);
- wrmsr(MSR_IA32_SYSENTER_EIP, (unsigned long) sysenter_entry, 0);
+ wrmsr(MSR_IA32_SYSENTER_EIP, (unsigned long) ia32_sysenter_target, 0);
put_cpu();
}

-
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