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x86: move _set_gate and its users to a common location

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This patch moves _set_gate and its users to desc.h. We can now
use common code for x86_64 and i386.

[ mingo@elte.hu: set_system_gate() fixes for nasty crashes. ]

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Glauber de Oliveira Costa
2008-01-30 13:31:14 +01:00
committed by Ingo Molnar
parent 54cd0eac72
commit 507f90c9f9
5 changed files with 93 additions and 99 deletions
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34
arch/x86/kernel/traps_32.c
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@@ -1102,40 +1102,6 @@ asmlinkage void math_emulate(long arg)
#endif /* CONFIG_MATH_EMULATION */
/*
* This needs to use 'idt_table' rather than 'idt', and
* thus use the _nonmapped_ version of the IDT, as the
* Pentium F0 0F bugfix can have resulted in the mapped
* IDT being write-protected.
*/
void set_intr_gate(unsigned int n, void *addr)
{
_set_gate(n, DESCTYPE_INT, addr, __KERNEL_CS);
}
/*
* This routine sets up an interrupt gate at directory privilege level 3.
*/
static inline void set_system_intr_gate(unsigned int n, void *addr)
{
_set_gate(n, DESCTYPE_INT | DESCTYPE_DPL3, addr, __KERNEL_CS);
}
static void __init set_trap_gate(unsigned int n, void *addr)
{
_set_gate(n, DESCTYPE_TRAP, addr, __KERNEL_CS);
}
static void __init set_system_gate(unsigned int n, void *addr)
{
_set_gate(n, DESCTYPE_TRAP | DESCTYPE_DPL3, addr, __KERNEL_CS);
}
static void __init set_task_gate(unsigned int n, unsigned int gdt_entry)
{
_set_gate(n, DESCTYPE_TASK, (void *)0, (gdt_entry<<3));
}
void __init trap_init(void)
{