Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

x86 vDSO: ia32_sysenter_target

Browse source 
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>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Roland McGrath 2008-01-30 13:30:43 +01:00 committed by Ingo Molnar
parent f288f32dc5
commit 0aa97fb226
2 changed files with 7 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
arch/x86/kernel/entry_32.S
View file

@ -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 */

4
arch/x86/vdso/vdso32-setup.c
View file

@ -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();
}