x86: unify tss_struct

Although slighly different, the tss_struct is very similar in x86_64 and
i386. The really different part, which matchs the hardware vision of it, is
now called x86_hw_tss, and each of the architectures provides yours.
It's then used as a field in the outter tss_struct.

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>

5 files changed, 6 insertions, 6 deletions

diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c
index a05428764314..2b32719a3fea 100644
--- a/arch/x86/kernel/asm-offsets_64.c
+++ b/arch/x86/kernel/asm-offsets_64.c
@@ -110,7 +110,7 @@ int main(void)
 	ENTRY(cr8);
 	BLANK();
 #undef ENTRY
-	DEFINE(TSS_ist, offsetof(struct tss_struct, ist));
+	DEFINE(TSS_ist, offsetof(struct tss_struct, x86_tss.ist));
 	BLANK();
 	DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx));
 	BLANK();
diff --git a/arch/x86/kernel/doublefault_32.c b/arch/x86/kernel/doublefault_32.c
index d16122a8e4eb..a47798b59f07 100644
--- a/arch/x86/kernel/doublefault_32.c
+++ b/arch/x86/kernel/doublefault_32.c
@@ -33,7 +33,7 @@ static void doublefault_fn(void)
 		printk(KERN_EMERG "double fault, tss at %08lx\n", tss);
 
 		if (ptr_ok(tss)) {
-			struct i386_hw_tss *t = (struct i386_hw_tss *)tss;
+			struct x86_hw_tss *t = (struct x86_hw_tss *)tss;
 
 			printk(KERN_EMERG "eip = %08lx, esp = %08lx\n",
 			       t->ip, t->sp);
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 836a71adfa11..af56104b73ff 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -639,7 +639,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	/*
 	 * Reload esp0, LDT and the page table pointer:
 	 */
-	tss->sp0 = next->sp0;
+	tss->x86_tss.sp0 = next->sp0;
 
 	/* 
 	 * Switch DS and ES.
diff --git a/arch/x86/kernel/setup64.c b/arch/x86/kernel/setup64.c
index 05cafcb94109..3b0ffa31f3c0 100644
--- a/arch/x86/kernel/setup64.c
+++ b/arch/x86/kernel/setup64.c
@@ -258,10 +258,10 @@ void __cpuinit cpu_init (void)
 				      v, cpu); 
 		}
 		estacks += PAGE_SIZE << order[v];
-		orig_ist->ist[v] = t->ist[v] = (unsigned long)estacks;
+		orig_ist->ist[v] = t->x86_tss.ist[v] = (unsigned long)estacks;
 	}
 
-	t->io_bitmap_base = offsetof(struct tss_struct, io_bitmap);
+	t->x86_tss.io_bitmap_base = offsetof(struct tss_struct, io_bitmap);
 	/*
 	 * <= is required because the CPU will access up to
 	 * 8 bits beyond the end of the IO permission bitmap.
diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c
index 4c03ddccd681..2ea02a71b644 100644
--- a/arch/x86/kernel/smpboot_64.c
+++ b/arch/x86/kernel/smpboot_64.c
@@ -614,7 +614,7 @@ do_rest:
 	start_rip = setup_trampoline();
 
 	init_rsp = c_idle.idle->thread.sp;
-	per_cpu(init_tss,cpu).sp0 = init_rsp;
+	per_cpu(init_tss, cpu).x86_tss.sp0 = init_rsp;
 	initial_code = start_secondary;
 	clear_tsk_thread_flag(c_idle.idle, TIF_FORK);