x86: unify struct desc_ptr

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>

6 files changed, 9 insertions, 10 deletions

diff --git a/arch/x86/kernel/asm-offsets_32.c b/arch/x86/kernel/asm-offsets_32.c
index 41531355670..afd84463b71 100644
--- a/arch/x86/kernel/asm-offsets_32.c
+++ b/arch/x86/kernel/asm-offsets_32.c
@@ -70,9 +70,8 @@ void foo(void)
 	OFFSET(TI_cpu, thread_info, cpu);
 	BLANK();
 
-	OFFSET(GDS_size, Xgt_desc_struct, size);
-	OFFSET(GDS_address, Xgt_desc_struct, address);
-	OFFSET(GDS_pad, Xgt_desc_struct, pad);
+	OFFSET(GDS_size, desc_ptr, size);
+	OFFSET(GDS_address, desc_ptr, address);
 	BLANK();
 
 	OFFSET(PT_EBX, pt_regs, bx);
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 4f9e31912a2..69507ae8a65 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -649,7 +649,7 @@ struct pt_regs * __devinit idle_regs(struct pt_regs *regs)
  * it's on the real one. */
 void switch_to_new_gdt(void)
 {
-	struct Xgt_desc_struct gdt_descr;
+	struct desc_ptr gdt_descr;
 
 	gdt_descr.address = (long)get_cpu_gdt_table(smp_processor_id());
 	gdt_descr.size = GDT_SIZE - 1;
diff --git a/arch/x86/kernel/doublefault_32.c b/arch/x86/kernel/doublefault_32.c
index cc19a3ea403..d16122a8e4e 100644
--- a/arch/x86/kernel/doublefault_32.c
+++ b/arch/x86/kernel/doublefault_32.c
@@ -17,7 +17,7 @@ static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE];
 
 static void doublefault_fn(void)
 {
-	struct Xgt_desc_struct gdt_desc = {0, 0};
+	struct desc_ptr gdt_desc = {0, 0};
 	unsigned long gdt, tss;
 
 	store_gdt(&gdt_desc);
diff --git a/arch/x86/kernel/efi_32.c b/arch/x86/kernel/efi_32.c
index e2be78f4939..863e8926f2b 100644
--- a/arch/x86/kernel/efi_32.c
+++ b/arch/x86/kernel/efi_32.c
@@ -69,7 +69,7 @@ static void efi_call_phys_prelog(void) __acquires(efi_rt_lock)
 {
 	unsigned long cr4;
 	unsigned long temp;
-	struct Xgt_desc_struct gdt_descr;
+	struct desc_ptr gdt_descr;
 
 	spin_lock(&efi_rt_lock);
 	local_irq_save(efi_rt_eflags);
@@ -111,7 +111,7 @@ static void efi_call_phys_prelog(void) __acquires(efi_rt_lock)
 static void efi_call_phys_epilog(void) __releases(efi_rt_lock)
 {
 	unsigned long cr4;
-	struct Xgt_desc_struct gdt_descr;
+	struct desc_ptr gdt_descr;
 
 	gdt_descr.address = (unsigned long)get_cpu_gdt_table(0);
 	gdt_descr.size = GDT_SIZE - 1;
diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c
index 11b935f4f88..c1cfd60639d 100644
--- a/arch/x86/kernel/machine_kexec_32.c
+++ b/arch/x86/kernel/machine_kexec_32.c
@@ -32,7 +32,7 @@ static u32 kexec_pte1[1024] PAGE_ALIGNED;
 
 static void set_idt(void *newidt, __u16 limit)
 {
-	struct Xgt_desc_struct curidt;
+	struct desc_ptr curidt;
 
 	/* ia32 supports unaliged loads & stores */
 	curidt.size    = limit;
@@ -44,7 +44,7 @@ static void set_idt(void *newidt, __u16 limit)
 
 static void set_gdt(void *newgdt, __u16 limit)
 {
-	struct Xgt_desc_struct curgdt;
+	struct desc_ptr curgdt;
 
 	/* ia32 supports unaligned loads & stores */
 	curgdt.size    = limit;
diff --git a/arch/x86/kernel/reboot_32.c b/arch/x86/kernel/reboot_32.c
index bb1a0f889c5..c3376fae639 100644
--- a/arch/x86/kernel/reboot_32.c
+++ b/arch/x86/kernel/reboot_32.c
@@ -161,7 +161,7 @@ real_mode_gdt_entries [3] =
 	0x000092000100ffffULL	/* 16-bit real-mode 64k data at 0x00000100 */
 };
 
-static struct Xgt_desc_struct
+static struct desc_ptr
 real_mode_gdt = { sizeof (real_mode_gdt_entries) - 1, (long)real_mode_gdt_entries },
 real_mode_idt = { 0x3ff, 0 },
 no_idt = { 0, 0 };