From cb38d377337cadd73fe4c582f77c5273685aeb71 Mon Sep 17 00:00:00 2001
From: Glauber de Oliveira Costa <gcosta@redhat.com>
Date: Wed, 30 Jan 2008 13:31:31 +0100
Subject: [PATCH] x86: unify thread struct.
The thread_struct is not fundamentally different between architectures, and
this patch puts it in the common header. What's really unique for each of
them is enclosed in ifdefs.
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>
---
include/asm-x86/processor.h | 44 ++++++++++++++++++++++++++++++++++
include/asm-x86/processor_32.h | 37 ----------------------------
include/asm-x86/processor_64.h | 32 -------------------------
3 files changed, 44 insertions(+), 69 deletions(-)
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index b1ea521563626..0e82ad5a22a43 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -126,6 +126,50 @@ extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
extern unsigned short num_cache_leaves;
+struct thread_struct {
+/* cached TLS descriptors. */
+ struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
+ unsigned long sp0;
+ unsigned long sp;
+#ifdef CONFIG_X86_32
+ unsigned long sysenter_cs;
+#else
+ unsigned long usersp; /* Copy from PDA */
+ unsigned short es, ds, fsindex, gsindex;
+#endif
+ unsigned long ip;
+ unsigned long fs;
+ unsigned long gs;
+/* Hardware debugging registers */
+ unsigned long debugreg0;
+ unsigned long debugreg1;
+ unsigned long debugreg2;
+ unsigned long debugreg3;
+ unsigned long debugreg6;
+ unsigned long debugreg7;
+/* fault info */
+ unsigned long cr2, trap_no, error_code;
+/* floating point info */
+ union i387_union i387 __attribute__((aligned(16)));;
+#ifdef CONFIG_X86_32
+/* virtual 86 mode info */
+ struct vm86_struct __user *vm86_info;
+ unsigned long screen_bitmap;
+ unsigned long v86flags, v86mask, saved_sp0;
+ unsigned int saved_fs, saved_gs;
+#endif
+/* IO permissions */
+ unsigned long *io_bitmap_ptr;
+ unsigned long iopl;
+/* max allowed port in the bitmap, in bytes: */
+ unsigned io_bitmap_max;
+/* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set. */
+ unsigned long debugctlmsr;
+/* Debug Store - if not 0 points to a DS Save Area configuration;
+ * goes into MSR_IA32_DS_AREA */
+ unsigned long ds_area_msr;
+};
+
static inline unsigned long native_get_debugreg(int regno)
{
unsigned long val = 0; /* Damn you, gcc! */
diff --git a/include/asm-x86/processor_32.h b/include/asm-x86/processor_32.h
index 53037d1a6ae6d..8cb05cec3cb9b 100644
--- a/include/asm-x86/processor_32.h
+++ b/include/asm-x86/processor_32.h
@@ -176,43 +176,6 @@ typedef struct {
#define ARCH_MIN_TASKALIGN 16
-struct thread_struct {
-/* cached TLS descriptors. */
- struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
- unsigned long sp0;
- unsigned long sysenter_cs;
- unsigned long ip;
- unsigned long sp;
- unsigned long fs;
- unsigned long gs;
-/* Hardware debugging registers */
- unsigned long debugreg0;
- unsigned long debugreg1;
- unsigned long debugreg2;
- unsigned long debugreg3;
- unsigned long debugreg6;
- unsigned long debugreg7;
-/* fault info */
- unsigned long cr2, trap_no, error_code;
-/* floating point info */
- union i387_union i387;
-/* virtual 86 mode info */
- struct vm86_struct __user * vm86_info;
- unsigned long screen_bitmap;
- unsigned long v86flags, v86mask, saved_sp0;
- unsigned int saved_fs, saved_gs;
-/* IO permissions */
- unsigned long *io_bitmap_ptr;
- unsigned long iopl;
-/* max allowed port in the bitmap, in bytes: */
- unsigned long io_bitmap_max;
-/* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set. */
- unsigned long debugctlmsr;
-/* Debug Store - if not 0 points to a DS Save Area configuration;
- * goes into MSR_IA32_DS_AREA */
- unsigned long ds_area_msr;
-};
-
#define INIT_THREAD { \
.sp0 = sizeof(init_stack) + (long)&init_stack, \
.vm86_info = NULL, \
diff --git a/include/asm-x86/processor_64.h b/include/asm-x86/processor_64.h
index 8d342c23ad14a..4b4ec3d799102 100644
--- a/include/asm-x86/processor_64.h
+++ b/include/asm-x86/processor_64.h
@@ -125,38 +125,6 @@ DECLARE_PER_CPU(struct orig_ist, orig_ist);
#define ARCH_MIN_MMSTRUCT_ALIGN 0
#endif
-struct thread_struct {
- unsigned long sp0;
- unsigned long sp;
- unsigned long usersp; /* Copy from PDA */
- unsigned long fs;
- unsigned long gs;
- unsigned short es, ds, fsindex, gsindex;
-/* Hardware debugging registers */
- unsigned long debugreg0;
- unsigned long debugreg1;
- unsigned long debugreg2;
- unsigned long debugreg3;
- unsigned long debugreg6;
- unsigned long debugreg7;
-/* fault info */
- unsigned long cr2, trap_no, error_code;
-/* floating point info */
- union i387_union i387 __attribute__((aligned(16)));
-/* IO permissions. the bitmap could be moved into the GDT, that would make
- switch faster for a limited number of ioperm using tasks. -AK */
- int ioperm;
- unsigned long *io_bitmap_ptr;
- unsigned io_bitmap_max;
-/* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set. */
- unsigned long debugctlmsr;
-/* Debug Store - if not 0 points to a DS Save Area configuration;
- * goes into MSR_IA32_DS_AREA */
- unsigned long ds_area_msr;
-/* cached TLS descriptors. */
- struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
-} __attribute__((aligned(16)));
-
#define INIT_THREAD { \
.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
}
--
2.30.2