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x86: unify struct desc_ptr

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This patch unifies struct desc_ptr between i386 and x86_64.
They can be expressed in the exact same way in C code, only
having to change the name of one of them. As Xgt_desc_struct
is ugly and big, this is the one that goes away.

There's also a padding field in i386, but it is not really
needed in the C structure definition.

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 13:31:12 +01:00
committed by Ingo Molnar
parent 6842ef0e85
commit 6b68f01baa
14 changed files with 38 additions and 45 deletions
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10
arch/x86/xen/enlighten.c
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@@ -295,7 +295,7 @@ static void xen_set_ldt(const void *addr, unsigned entries)
xen_mc_issue(PARAVIRT_LAZY_CPU);
}
static void xen_load_gdt(const struct Xgt_desc_struct *dtr)
static void xen_load_gdt(const struct desc_ptr *dtr)
{
unsigned long *frames;
unsigned long va = dtr->address;
@@ -395,7 +395,7 @@ static int cvt_gate_to_trap(int vector, u32 low, u32 high,
}
/* Locations of each CPU's IDT */
static DEFINE_PER_CPU(struct Xgt_desc_struct, idt_desc);
static DEFINE_PER_CPU(struct desc_ptr, idt_desc);
/* Set an IDT entry. If the entry is part of the current IDT, then
also update Xen. */
@@ -427,7 +427,7 @@ static void xen_write_idt_entry(struct desc_struct *dt, int entrynum,
preempt_enable();
}
static void xen_convert_trap_info(const struct Xgt_desc_struct *desc,
static void xen_convert_trap_info(const struct desc_ptr *desc,
struct trap_info *traps)
{
unsigned in, out, count;
@@ -446,7 +446,7 @@ static void xen_convert_trap_info(const struct Xgt_desc_struct *desc,
void xen_copy_trap_info(struct trap_info *traps)
{
const struct Xgt_desc_struct *desc = &__get_cpu_var(idt_desc);
const struct desc_ptr *desc = &__get_cpu_var(idt_desc);
xen_convert_trap_info(desc, traps);
}
@@ -454,7 +454,7 @@ void xen_copy_trap_info(struct trap_info *traps)
/* Load a new IDT into Xen. In principle this can be per-CPU, so we
hold a spinlock to protect the static traps[] array (static because
it avoids allocation, and saves stack space). */
static void xen_load_idt(const struct Xgt_desc_struct *desc)
static void xen_load_idt(const struct desc_ptr *desc)
{
static DEFINE_SPINLOCK(lock);
static struct trap_info traps[257];