-Index: linux-2.4.21/arch/i386/kernel/entry.S
+Index: linux-2.4.21-27.EL/include/asm-i386/hw_irq.h
===================================================================
---- linux-2.4.21.orig/arch/i386/kernel/entry.S 2004-09-11 10:16:39.000000000 -0400
-+++ linux-2.4.21/arch/i386/kernel/entry.S 2004-12-20 17:47:25.000000000 -0500
+--- linux-2.4.21-27.EL.orig/include/asm-i386/hw_irq.h 2004-12-21 13:51:09.000000000 -0500
++++ linux-2.4.21-27.EL/include/asm-i386/hw_irq.h 2005-01-07 10:55:45.367690072 -0500
+@@ -135,21 +135,17 @@
+ " \
+ /* load the real stack - keep the offset */ \
+ \
+- movl $-8192, %ebx; \
++ movl $- " STR(THREAD_SIZE) ", %ebx; \
+ andl %esp, %ebx; \
+ movl 36(%ebx), %edx; \
+ movl %esp, %ebx; \
+- andl $0x1fff, %ebx; \
++ andl $( " STR(THREAD_SIZE) "-1), %ebx; \
+ orl %ebx, %edx; \
+ movl %edx, %esp;"
+
+ #define IRQ_NAME2(nr) nr##_interrupt(void)
+ #define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr)
+
+-#define GET_CURRENT \
+- "movl %esp, %ebx\n\t" \
+- "andl $-8192, %ebx\n\t"
+-
+ /*
+ * SMP has a few special interrupts for IPI messages
+ */
+Index: linux-2.4.21-27.EL/include/asm-i386/processor.h
+===================================================================
+--- linux-2.4.21-27.EL.orig/include/asm-i386/processor.h 2004-12-21 13:51:31.000000000 -0500
++++ linux-2.4.21-27.EL/include/asm-i386/processor.h 2005-01-07 10:55:45.376688704 -0500
+@@ -14,6 +14,7 @@
+ #include <asm/types.h>
+ #include <asm/sigcontext.h>
+ #include <asm/cpufeature.h>
++#include <asm/current.h>
+ #include <linux/cache.h>
+ #include <linux/config.h>
+ #include <linux/threads.h>
+@@ -490,10 +491,6 @@
+ #define KSTK_EIP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1019])
+ #define KSTK_ESP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1022])
+
+-#define THREAD_SIZE (2*PAGE_SIZE)
+-#define __alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
+-#define __free_task_struct(p) do { BUG_ON((p)->state < TASK_ZOMBIE); free_pages((unsigned long) (p), 1); } while (0)
+-
+ #define init_task (init_task_union.task)
+ #define init_stack (init_task_union.stack)
+
+Index: linux-2.4.21-27.EL/include/asm-i386/current.h
+===================================================================
+--- linux-2.4.21-27.EL.orig/include/asm-i386/current.h 1998-08-14 19:35:22.000000000 -0400
++++ linux-2.4.21-27.EL/include/asm-i386/current.h 2005-01-07 10:55:45.356691744 -0500
+@@ -1,15 +1,64 @@
+ #ifndef _I386_CURRENT_H
+ #define _I386_CURRENT_H
++#include <asm/page.h>
++
++/*
++ * Configurable page sizes on i386, mainly for debugging purposes.
++ * (c) Balbir Singh
++ */
++
++/* enumerate the values, include/asm-i386/hw_irq.h in particular needs this */
++#if (PAGE_SIZE != 4096)
++#error PAGE_SIZE != 4096 unsupported
++#endif
++
++#if (CONFIG_STACK_SIZE_SHIFT == 0)
++#define THREAD_SIZE 4096
++#elif (CONFIG_STACK_SIZE_SHIFT == 1)
++#define THREAD_SIZE 8192
++#elif (CONFIG_STACK_SIZE_SHIFT == 2)
++#define THREAD_SIZE 16384
++#elif (CONFIG_STACK_SIZE_SHIFT == 3)
++#define THREAD_SIZE 32768
++#elif (CONFIG_STACK_SIZE_SHIFT == 4)
++#define THREAD_SIZE 65536
++#else
++#error CONFIG_STACK_SIZE_SHIFT > 4 unsupported
++#endif
++
++#if (CONFIG_STACK_SIZE_SHIFT != 1) && defined(CONFIG_X86_4G)
++#error Large stacks with 4G/4G split unsupported
++#endif
++
++#ifdef __ASSEMBLY__
++
++#define GET_CURRENT(reg) \
++ movl $-THREAD_SIZE, reg; \
++ andl %esp, reg
++
++#else /* __ASSEMBLY__ */
++
++#define __alloc_task_struct() \
++ ((struct task_struct *) __get_free_pages(GFP_KERNEL, CONFIG_STACK_SIZE_SHIFT))
++
++#define __free_task_struct(p) do { \
++ BUG_ON((p)->state < TASK_ZOMBIE); \
++ free_pages((unsigned long) (p), CONFIG_STACK_SIZE_SHIFT); \
++} while(0)
++
++#define INIT_TASK_SIZE THREAD_SIZE
+
+ struct task_struct;
+
+ static inline struct task_struct * get_current(void)
+ {
+ struct task_struct *current;
+- __asm__("andl %%esp,%0; ":"=r" (current) : "0" (~8191UL));
++ __asm__("andl %%esp,%0; ":"=r" (current) : "0" (~(THREAD_SIZE - 1)));
+ return current;
+ }
+
+ #define current get_current()
+
++#endif /* __ASSEMBLY__ */
++
+ #endif /* !(_I386_CURRENT_H) */
+Index: linux-2.4.21-27.EL/include/asm-x86_64/processor.h
+===================================================================
+--- linux-2.4.21-27.EL.orig/include/asm-x86_64/processor.h 2004-12-21 13:51:31.000000000 -0500
++++ linux-2.4.21-27.EL/include/asm-x86_64/processor.h 2005-01-07 10:58:24.167548824 -0500
+@@ -407,8 +407,8 @@
+ /* Note: most of the infrastructure to separate stack and task_struct
+ are already there. When you run out of stack try this first. */
+
+-#define __alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
+-#define __free_task_struct(p) free_pages((unsigned long) (p), 1)
++#define __alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL, THREAD_ORDER))
++#define __free_task_struct(p) free_pages((unsigned long) (p), THREAD_ORDER)
+
+ #define init_task (init_task_union.task)
+ #define init_stack (init_task_union.stack)
+Index: linux-2.4.21-27.EL/include/asm-x86_64/page.h
+===================================================================
+--- linux-2.4.21-27.EL.orig/include/asm-x86_64/page.h 2004-12-21 13:51:10.000000000 -0500
++++ linux-2.4.21-27.EL/include/asm-x86_64/page.h 2005-01-07 10:55:45.404684448 -0500
+@@ -27,8 +27,8 @@
+ /* We still hope 8K is enough, but ... */
+ /* Currently it is actually ~6k. This would change when task_struct moves into
+ an own slab. */
+-#define THREAD_ORDER 1
+-#define THREAD_SIZE (2*PAGE_SIZE)
++#define THREAD_ORDER CONFIG_STACK_SIZE_SHIFT
++#define THREAD_SIZE ((1 << CONFIG_STACK_SIZE_SHIFT) * PAGE_SIZE)
+
+ #define INIT_TASK_SIZE THREAD_SIZE
+ #define CURRENT_MASK (~(THREAD_SIZE-1))
+Index: linux-2.4.21-27.EL/include/asm-x86_64/current.h
+===================================================================
+--- linux-2.4.21-27.EL.orig/include/asm-x86_64/current.h 2002-11-28 18:53:15.000000000 -0500
++++ linux-2.4.21-27.EL/include/asm-x86_64/current.h 2005-01-07 10:55:45.394685968 -0500
+@@ -5,6 +5,7 @@
+ struct task_struct;
+
+ #include <asm/pda.h>
++#include <asm/page.h>
+
+ static inline struct task_struct *get_current(void)
+ {
+Index: linux-2.4.21-27.EL/arch/x86_64/config.in
+===================================================================
+--- linux-2.4.21-27.EL.orig/arch/x86_64/config.in 2004-12-21 13:51:30.000000000 -0500
++++ linux-2.4.21-27.EL/arch/x86_64/config.in 2005-01-07 10:55:45.324696608 -0500
+@@ -90,6 +90,28 @@
+ define_bool CONFIG_NUMA y
+ fi
+
++choice 'Bigger Stack Size Support' \
++ "off CONFIG_NOBIGSTACK \
++ 16KB CONFIG_STACK_SIZE_16KB \
++ 32KB CONFIG_STACK_SIZE_32KB \
++ 64KB CONFIG_STACK_SIZE_64KB" off
++
++if [ "$CONFIG_NOBIGSTACK" = "y" ]; then
++ define_int CONFIG_STACK_SIZE_SHIFT 1
++else
++ if [ "$CONFIG_STACK_SIZE_16KB" = "y" ]; then
++ define_int CONFIG_STACK_SIZE_SHIFT 2
++ else
++ if [ "$CONFIG_STACK_SIZE_32KB" = "y" ]; then
++ define_int CONFIG_STACK_SIZE_SHIFT 3
++ else
++ if [ "$CONFIG_STACK_SIZE_64KB" = "y" ]; then
++ define_int CONFIG_STACK_SIZE_SHIFT 4
++ fi
++ fi
++ fi
++fi
++
+ endmenu
+
+ mainmenu_option next_comment
+Index: linux-2.4.21-27.EL/arch/x86_64/kernel/smpboot.c
+===================================================================
+--- linux-2.4.21-27.EL.orig/arch/x86_64/kernel/smpboot.c 2004-12-21 13:51:01.000000000 -0500
++++ linux-2.4.21-27.EL/arch/x86_64/kernel/smpboot.c 2005-01-07 10:55:45.325696456 -0500
+@@ -753,7 +753,7 @@
+ Dprintk("CPU has booted.\n");
+ } else {
+ boot_status = 1;
+- if (*((volatile unsigned char *)phys_to_virt(8192))
++ if (*((volatile unsigned char *)phys_to_virt(THREAD_SIZE))
+ == 0xA5)
+ /* trampoline started but...? */
+ printk("Stuck ??\n");
+@@ -771,7 +771,7 @@
+ }
+
+ /* mark "stuck" area as not stuck */
+- *((volatile unsigned int *)phys_to_virt(8192)) = 0;
++ *((volatile unsigned int *)phys_to_virt(THREAD_SIZE)) = 0;
+
+ return cpu;
+ }
+Index: linux-2.4.21-27.EL/arch/x86_64/kernel/traps.c
+===================================================================
+--- linux-2.4.21-27.EL.orig/arch/x86_64/kernel/traps.c 2004-12-21 13:51:15.000000000 -0500
++++ linux-2.4.21-27.EL/arch/x86_64/kernel/traps.c 2005-01-07 10:55:45.326696304 -0500
+@@ -240,7 +240,7 @@
+ unsigned long rsp = tsk->thread.rsp;
+
+ /* User space on another CPU? */
+- if ((rsp ^ (unsigned long)tsk) & (PAGE_MASK<<1))
++ if ((rsp ^ (unsigned long)tsk) & ~(THREAD_SIZE - 1))
+ return;
+ show_trace((unsigned long *)rsp);
+ }
+Index: linux-2.4.21-27.EL/arch/x86_64/vmlinux.lds
+===================================================================
+--- linux-2.4.21-27.EL.orig/arch/x86_64/vmlinux.lds 2003-06-13 10:51:32.000000000 -0400
++++ linux-2.4.21-27.EL/arch/x86_64/vmlinux.lds 2005-01-07 10:55:45.327696152 -0500
+@@ -72,7 +72,8 @@
+ .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT (LOADADDR(.vsyscall_0) + 1024) { *(.vsyscall_1) }
+ . = LOADADDR(.vsyscall_0) + 4096;
+
+- . = ALIGN(8192); /* init_task */
++/* chose the biggest of the possible stack sizes here? */
++ . = ALIGN(65536); /* init_task */
+ .data.init_task : { *(.data.init_task) }
+
+ . = ALIGN(4096);
+Index: linux-2.4.21-27.EL/arch/i386/config.in
+===================================================================
+--- linux-2.4.21-27.EL.orig/arch/i386/config.in 2004-12-21 13:51:31.000000000 -0500
++++ linux-2.4.21-27.EL/arch/i386/config.in 2005-01-07 10:55:45.324696608 -0500
+@@ -306,6 +306,28 @@
+ fi
+ fi
+
++choice 'Bigger Stack Size Support' \
++ "off CONFIG_NOBIGSTACK \
++ 16KB CONFIG_STACK_SIZE_16KB \
++ 32KB CONFIG_STACK_SIZE_32KB \
++ 64KB CONFIG_STACK_SIZE_64KB" off
++
++if [ "$CONFIG_NOBIGSTACK" = "y" ]; then
++ define_int CONFIG_STACK_SIZE_SHIFT 1
++else
++ if [ "$CONFIG_STACK_SIZE_16KB" = "y" ]; then
++ define_int CONFIG_STACK_SIZE_SHIFT 2
++ else
++ if [ "$CONFIG_STACK_SIZE_32KB" = "y" ]; then
++ define_int CONFIG_STACK_SIZE_SHIFT 3
++ else
++ if [ "$CONFIG_STACK_SIZE_64KB" = "y" ]; then
++ define_int CONFIG_STACK_SIZE_SHIFT 4
++ fi
++ fi
++ fi
++fi
++
+ if [ "$CONFIG_SMP" = "y" -a "$CONFIG_X86_CMPXCHG" = "y" ]; then
+ define_bool CONFIG_HAVE_DEC_LOCK y
+ fi
+Index: linux-2.4.21-27.EL/arch/i386/kernel/entry.S
+===================================================================
+--- linux-2.4.21-27.EL.orig/arch/i386/kernel/entry.S 2004-12-21 13:51:31.000000000 -0500
++++ linux-2.4.21-27.EL/arch/i386/kernel/entry.S 2005-01-07 10:55:45.271704664 -0500
@@ -46,6 +46,7 @@
#include <asm/segment.h>
#include <asm/page.h>
orl %ebx, %edx; \
movl %esp, %eax; \
movl %edx, %esp; \
-Index: linux-2.4.21/arch/i386/kernel/smpboot.c
+Index: linux-2.4.21-27.EL/arch/i386/kernel/irq.c
===================================================================
---- linux-2.4.21.orig/arch/i386/kernel/smpboot.c 2004-09-11 10:16:17.000000000 -0400
-+++ linux-2.4.21/arch/i386/kernel/smpboot.c 2004-12-20 17:47:25.000000000 -0500
+--- linux-2.4.21-27.EL.orig/arch/i386/kernel/irq.c 2004-12-21 13:51:22.000000000 -0500
++++ linux-2.4.21-27.EL/arch/i386/kernel/irq.c 2005-01-07 10:55:45.307699192 -0500
+@@ -45,6 +45,7 @@
+ #include <asm/delay.h>
+ #include <asm/desc.h>
+ #include <asm/irq.h>
++#include <asm/current.h>
+
+
+
+@@ -585,7 +586,7 @@
+ long esp;
+
+ /* Debugging check for stack overflow: is there less than 1KB free? */
+- __asm__ __volatile__("andl %%esp,%0" : "=r" (esp) : "0" (8191));
++ __asm__ __volatile__("andl %%esp,%0" : "=r" (esp) : "0" (THREAD_SIZE-1));
+ if (unlikely(esp < (sizeof(struct task_struct) + 1024))) {
+ extern void show_stack(unsigned long *);
+
+Index: linux-2.4.21-27.EL/arch/i386/kernel/smpboot.c
+===================================================================
+--- linux-2.4.21-27.EL.orig/arch/i386/kernel/smpboot.c 2004-12-21 13:51:01.000000000 -0500
++++ linux-2.4.21-27.EL/arch/i386/kernel/smpboot.c 2005-01-07 10:55:45.305699496 -0500
@@ -814,7 +814,7 @@
/* So we see what's up */
if(clustered_apic_mode == CLUSTERED_APIC_NUMAQ) {
printk("Restoring NMI vector\n");
-Index: linux-2.4.21/arch/i386/kernel/traps.c
+Index: linux-2.4.21-27.EL/arch/i386/kernel/traps.c
===================================================================
---- linux-2.4.21.orig/arch/i386/kernel/traps.c 2004-09-11 10:16:25.000000000 -0400
-+++ linux-2.4.21/arch/i386/kernel/traps.c 2004-12-20 17:47:25.000000000 -0500
+--- linux-2.4.21-27.EL.orig/arch/i386/kernel/traps.c 2004-12-21 13:51:15.000000000 -0500
++++ linux-2.4.21-27.EL/arch/i386/kernel/traps.c 2005-01-07 10:55:45.306699344 -0500
@@ -180,7 +180,7 @@
unsigned long esp = tsk->thread.esp;
return;
show_trace((unsigned long *)esp);
}
-Index: linux-2.4.21/arch/i386/kernel/head.S
+Index: linux-2.4.21-27.EL/arch/i386/kernel/head.S
===================================================================
---- linux-2.4.21.orig/arch/i386/kernel/head.S 2004-09-11 10:16:19.000000000 -0400
-+++ linux-2.4.21/arch/i386/kernel/head.S 2004-12-20 17:47:25.000000000 -0500
+--- linux-2.4.21-27.EL.orig/arch/i386/kernel/head.S 2004-12-21 13:51:07.000000000 -0500
++++ linux-2.4.21-27.EL/arch/i386/kernel/head.S 2005-01-07 10:55:45.307699192 -0500
@@ -15,6 +15,7 @@
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/desc.h>
-+#include <asm/current.h>
-
- #define OLD_CL_MAGIC_ADDR 0x90020
- #define OLD_CL_MAGIC 0xA33F
-@@ -343,7 +344,7 @@
- ret
-
- ENTRY(stack_start)
-- .long SYMBOL_NAME(init_task_union)+8192
-+ .long SYMBOL_NAME(init_task_union)+THREAD_SIZE
- .long __KERNEL_DS
-
- /* This is the default interrupt "handler" :-) */
-Index: linux-2.4.21/arch/i386/kernel/irq.c
-===================================================================
---- linux-2.4.21.orig/arch/i386/kernel/irq.c 2004-09-11 10:16:30.000000000 -0400
-+++ linux-2.4.21/arch/i386/kernel/irq.c 2004-12-20 17:47:25.000000000 -0500
-@@ -45,6 +45,7 @@
- #include <asm/delay.h>
- #include <asm/desc.h>
- #include <asm/irq.h>
-+#include <asm/current.h>
-
-
++#include <asm/current.h>
-@@ -585,7 +586,7 @@
- long esp;
+ #define OLD_CL_MAGIC_ADDR 0x90020
+ #define OLD_CL_MAGIC 0xA33F
+@@ -343,7 +344,7 @@
+ ret
- /* Debugging check for stack overflow: is there less than 1KB free? */
-- __asm__ __volatile__("andl %%esp,%0" : "=r" (esp) : "0" (8191));
-+ __asm__ __volatile__("andl %%esp,%0" : "=r" (esp) : "0" (THREAD_SIZE-1));
- if (unlikely(esp < (sizeof(struct task_struct) + 1024))) {
- extern void show_stack(unsigned long *);
+ ENTRY(stack_start)
+- .long SYMBOL_NAME(init_task_union)+8192
++ .long SYMBOL_NAME(init_task_union)+THREAD_SIZE
+ .long __KERNEL_DS
-Index: linux-2.4.21/arch/i386/lib/getuser.S
+ /* This is the default interrupt "handler" :-) */
+Index: linux-2.4.21-27.EL/arch/i386/lib/getuser.S
===================================================================
---- linux-2.4.21.orig/arch/i386/lib/getuser.S 1998-01-12 16:42:52.000000000 -0500
-+++ linux-2.4.21/arch/i386/lib/getuser.S 2004-12-20 17:47:25.000000000 -0500
+--- linux-2.4.21-27.EL.orig/arch/i386/lib/getuser.S 1998-01-12 16:42:52.000000000 -0500
++++ linux-2.4.21-27.EL/arch/i386/lib/getuser.S 2005-01-07 10:55:45.323696760 -0500
@@ -21,6 +21,10 @@
* as they get called from within inline assembly.
*/
cmpl addr_limit(%edx),%eax
jae bad_get_user
3: movl -3(%eax),%edx
-Index: linux-2.4.21/arch/i386/config.in
-===================================================================
---- linux-2.4.21.orig/arch/i386/config.in 2004-09-11 10:16:39.000000000 -0400
-+++ linux-2.4.21/arch/i386/config.in 2004-12-20 17:47:25.000000000 -0500
-@@ -306,6 +306,28 @@
- fi
- fi
-
-+choice 'Bigger Stack Size Support' \
-+ "off CONFIG_NOBIGSTACK \
-+ 16KB CONFIG_STACK_SIZE_16KB \
-+ 32KB CONFIG_STACK_SIZE_32KB \
-+ 64KB CONFIG_STACK_SIZE_64KB" off
-+
-+if [ "$CONFIG_NOBIGSTACK" = "y" ]; then
-+ define_int CONFIG_STACK_SIZE_SHIFT 1
-+else
-+ if [ "$CONFIG_STACK_SIZE_16KB" = "y" ]; then
-+ define_int CONFIG_STACK_SIZE_SHIFT 2
-+ else
-+ if [ "$CONFIG_STACK_SIZE_32KB" = "y" ]; then
-+ define_int CONFIG_STACK_SIZE_SHIFT 3
-+ else
-+ if [ "$CONFIG_STACK_SIZE_64KB" = "y" ]; then
-+ define_int CONFIG_STACK_SIZE_SHIFT 4
-+ fi
-+ fi
-+ fi
-+fi
-+
- if [ "$CONFIG_SMP" = "y" -a "$CONFIG_X86_CMPXCHG" = "y" ]; then
- define_bool CONFIG_HAVE_DEC_LOCK y
- fi
-Index: linux-2.4.21/arch/i386/vmlinux.lds.in
+Index: linux-2.4.21-27.EL/arch/i386/vmlinux.lds.in
===================================================================
---- linux-2.4.21.orig/arch/i386/vmlinux.lds.in 2004-09-11 10:16:19.000000000 -0400
-+++ linux-2.4.21/arch/i386/vmlinux.lds.in 2004-12-20 17:47:25.000000000 -0500
+--- linux-2.4.21-27.EL.orig/arch/i386/vmlinux.lds.in 2004-12-21 13:51:08.000000000 -0500
++++ linux-2.4.21-27.EL/arch/i386/vmlinux.lds.in 2005-01-07 10:55:45.324696608 -0500
@@ -1,6 +1,7 @@
#define __ASSEMBLY__
.data.init_task : { *(.data.init_task) }
entry_tramp_start = .;
-Index: linux-2.4.21/arch/x86_64/config.in
-===================================================================
---- linux-2.4.21.orig/arch/x86_64/config.in 2004-09-11 10:16:35.000000000 -0400
-+++ linux-2.4.21/arch/x86_64/config.in 2004-12-20 17:49:14.000000000 -0500
-@@ -90,6 +90,28 @@
- define_bool CONFIG_NUMA y
- fi
-
-+choice 'Bigger Stack Size Support' \
-+ "off CONFIG_NOBIGSTACK \
-+ 16KB CONFIG_STACK_SIZE_16KB \
-+ 32KB CONFIG_STACK_SIZE_32KB \
-+ 64KB CONFIG_STACK_SIZE_64KB" off
-+
-+if [ "$CONFIG_NOBIGSTACK" = "y" ]; then
-+ define_int CONFIG_STACK_SIZE_SHIFT 1
-+else
-+ if [ "$CONFIG_STACK_SIZE_16KB" = "y" ]; then
-+ define_int CONFIG_STACK_SIZE_SHIFT 2
-+ else
-+ if [ "$CONFIG_STACK_SIZE_32KB" = "y" ]; then
-+ define_int CONFIG_STACK_SIZE_SHIFT 3
-+ else
-+ if [ "$CONFIG_STACK_SIZE_64KB" = "y" ]; then
-+ define_int CONFIG_STACK_SIZE_SHIFT 4
-+ fi
-+ fi
-+ fi
-+fi
-+
- endmenu
-
- mainmenu_option next_comment
-Index: linux-2.4.21/arch/x86_64/kernel/smpboot.c
-===================================================================
---- linux-2.4.21.orig/arch/x86_64/kernel/smpboot.c 2004-09-11 10:16:17.000000000 -0400
-+++ linux-2.4.21/arch/x86_64/kernel/smpboot.c 2004-12-20 17:49:14.000000000 -0500
-@@ -756,7 +756,7 @@
- Dprintk("CPU has booted.\n");
- } else {
- boot_status = 1;
-- if (*((volatile unsigned char *)phys_to_virt(8192))
-+ if (*((volatile unsigned char *)phys_to_virt(THREAD_SIZE))
- == 0xA5)
- /* trampoline started but...? */
- printk("Stuck ??\n");
-@@ -775,7 +775,7 @@
- }
-
- /* mark "stuck" area as not stuck */
-- *((volatile unsigned int *)phys_to_virt(8192)) = 0;
-+ *((volatile unsigned int *)phys_to_virt(THREAD_SIZE)) = 0;
-
- return cpu;
- }
-Index: linux-2.4.21/arch/x86_64/kernel/traps.c
-===================================================================
---- linux-2.4.21.orig/arch/x86_64/kernel/traps.c 2004-09-11 10:16:25.000000000 -0400
-+++ linux-2.4.21/arch/x86_64/kernel/traps.c 2004-12-20 17:49:14.000000000 -0500
-@@ -240,7 +240,7 @@
- unsigned long rsp = tsk->thread.rsp;
-
- /* User space on another CPU? */
-- if ((rsp ^ (unsigned long)tsk) & (PAGE_MASK<<1))
-+ if ((rsp ^ (unsigned long)tsk) & ~(THREAD_SIZE - 1))
- return;
- show_trace((unsigned long *)rsp);
- }
-Index: linux-2.4.21/arch/x86_64/vmlinux.lds
-===================================================================
---- linux-2.4.21.orig/arch/x86_64/vmlinux.lds 2003-06-13 10:51:32.000000000 -0400
-+++ linux-2.4.21/arch/x86_64/vmlinux.lds 2004-12-20 17:49:14.000000000 -0500
-@@ -72,7 +72,8 @@
- .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT (LOADADDR(.vsyscall_0) + 1024) { *(.vsyscall_1) }
- . = LOADADDR(.vsyscall_0) + 4096;
-
-- . = ALIGN(8192); /* init_task */
-+/* chose the biggest of the possible stack sizes here? */
-+ . = ALIGN(65536); /* init_task */
- .data.init_task : { *(.data.init_task) }
-
- . = ALIGN(4096);
-Index: linux-2.4.21/include/asm-i386/current.h
-===================================================================
---- linux-2.4.21.orig/include/asm-i386/current.h 1998-08-14 19:35:22.000000000 -0400
-+++ linux-2.4.21/include/asm-i386/current.h 2004-12-20 17:47:25.000000000 -0500
-@@ -1,15 +1,64 @@
- #ifndef _I386_CURRENT_H
- #define _I386_CURRENT_H
-+#include <asm/page.h>
-+
-+/*
-+ * Configurable page sizes on i386, mainly for debugging purposes.
-+ * (c) Balbir Singh
-+ */
-+
-+/* enumerate the values, include/asm-i386/hw_irq.h in particular needs this */
-+#if (PAGE_SIZE != 4096)
-+#error PAGE_SIZE != 4096 unsupported
-+#endif
-+
-+#if (CONFIG_STACK_SIZE_SHIFT == 0)
-+#define THREAD_SIZE 4096
-+#elif (CONFIG_STACK_SIZE_SHIFT == 1)
-+#define THREAD_SIZE 8192
-+#elif (CONFIG_STACK_SIZE_SHIFT == 2)
-+#define THREAD_SIZE 16384
-+#elif (CONFIG_STACK_SIZE_SHIFT == 3)
-+#define THREAD_SIZE 32768
-+#elif (CONFIG_STACK_SIZE_SHIFT == 4)
-+#define THREAD_SIZE 65536
-+#else
-+#error CONFIG_STACK_SIZE_SHIFT > 4 unsupported
-+#endif
-+
-+#if (CONFIG_STACK_SIZE_SHIFT != 1) && defined(CONFIG_X86_4G)
-+#error Large stacks with 4G/4G split unsupported
-+#endif
-+
-+#ifdef __ASSEMBLY__
-+
-+#define GET_CURRENT(reg) \
-+ movl $-THREAD_SIZE, reg; \
-+ andl %esp, reg
-+
-+#else /* __ASSEMBLY__ */
-+
-+#define __alloc_task_struct() \
-+ ((struct task_struct *) __get_free_pages(GFP_KERNEL, CONFIG_STACK_SIZE_SHIFT))
-+
-+#define __free_task_struct(p) do { \
-+ BUG_ON((p)->state < TASK_ZOMBIE); \
-+ free_pages((unsigned long) (p), CONFIG_STACK_SIZE_SHIFT); \
-+} while(0)
-+
-+#define INIT_TASK_SIZE THREAD_SIZE
-
- struct task_struct;
-
- static inline struct task_struct * get_current(void)
- {
- struct task_struct *current;
-- __asm__("andl %%esp,%0; ":"=r" (current) : "0" (~8191UL));
-+ __asm__("andl %%esp,%0; ":"=r" (current) : "0" (~(THREAD_SIZE - 1)));
- return current;
- }
-
- #define current get_current()
-
-+#endif /* __ASSEMBLY__ */
-+
- #endif /* !(_I386_CURRENT_H) */
-Index: linux-2.4.21/include/asm-i386/hw_irq.h
-===================================================================
---- linux-2.4.21.orig/include/asm-i386/hw_irq.h 2004-09-11 10:16:19.000000000 -0400
-+++ linux-2.4.21/include/asm-i386/hw_irq.h 2004-12-20 17:47:25.000000000 -0500
-@@ -135,21 +135,17 @@
- " \
- /* load the real stack - keep the offset */ \
- \
-- movl $-8192, %ebx; \
-+ movl $- " STR(THREAD_SIZE) ", %ebx; \
- andl %esp, %ebx; \
- movl 36(%ebx), %edx; \
- movl %esp, %ebx; \
-- andl $0x1fff, %ebx; \
-+ andl $( " STR(THREAD_SIZE) "-1), %ebx; \
- orl %ebx, %edx; \
- movl %edx, %esp;"
-
- #define IRQ_NAME2(nr) nr##_interrupt(void)
- #define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr)
-
--#define GET_CURRENT \
-- "movl %esp, %ebx\n\t" \
-- "andl $-8192, %ebx\n\t"
--
- /*
- * SMP has a few special interrupts for IPI messages
- */
-Index: linux-2.4.21/include/asm-i386/processor.h
-===================================================================
---- linux-2.4.21.orig/include/asm-i386/processor.h 2004-09-11 10:16:39.000000000 -0400
-+++ linux-2.4.21/include/asm-i386/processor.h 2004-12-20 17:47:25.000000000 -0500
-@@ -14,6 +14,7 @@
- #include <asm/types.h>
- #include <asm/sigcontext.h>
- #include <asm/cpufeature.h>
-+#include <asm/current.h>
- #include <linux/cache.h>
- #include <linux/config.h>
- #include <linux/threads.h>
-@@ -490,10 +491,6 @@
- #define KSTK_EIP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1019])
- #define KSTK_ESP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1022])
-
--#define THREAD_SIZE (2*PAGE_SIZE)
--#define __alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
--#define __free_task_struct(p) do { BUG_ON((p)->state < TASK_ZOMBIE); free_pages((unsigned long) (p), 1); } while (0)
--
- #define init_task (init_task_union.task)
- #define init_stack (init_task_union.stack)
-
-Index: linux-2.4.21/include/asm-x86_64/current.h
-===================================================================
---- linux-2.4.21.orig/include/asm-x86_64/current.h 2002-11-28 18:53:15.000000000 -0500
-+++ linux-2.4.21/include/asm-x86_64/current.h 2004-12-20 17:49:14.000000000 -0500
-@@ -5,6 +5,7 @@
- struct task_struct;
-
- #include <asm/pda.h>
-+#include <asm/page.h>
-
- static inline struct task_struct *get_current(void)
- {
-Index: linux-2.4.21/include/asm-x86_64/page.h
-===================================================================
---- linux-2.4.21.orig/include/asm-x86_64/page.h 2004-09-11 10:16:20.000000000 -0400
-+++ linux-2.4.21/include/asm-x86_64/page.h 2004-12-20 17:49:14.000000000 -0500
-@@ -27,8 +27,8 @@
- /* We still hope 8K is enough, but ... */
- /* Currently it is actually ~6k. This would change when task_struct moves into
- an own slab. */
--#define THREAD_ORDER 1
--#define THREAD_SIZE (2*PAGE_SIZE)
-+#define THREAD_ORDER CONFIG_STACK_SIZE_SHIFT
-+#define THREAD_SIZE ((1 << CONFIG_STACK_SIZE_SHIFT) * PAGE_SIZE)
-
- #define INIT_TASK_SIZE THREAD_SIZE
- #define CURRENT_MASK (~(THREAD_SIZE-1))
-Index: linux-2.4.21/include/asm-x86_64/processor.h
-===================================================================
---- linux-2.4.21.orig/include/asm-x86_64/processor.h 2004-09-11 10:16:39.000000000 -0400
-+++ linux-2.4.21/include/asm-x86_64/processor.h 2004-12-20 17:50:00.000000000 -0500
-@@ -406,7 +406,7 @@
- are already there. When you run out of stack try this first. */
-
- #define __alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
--#define __free_task_struct(p) free_pages((unsigned long) (p), 1)
-+#define __free_task_struct(p) free_pages((unsigned long) (p), THREAD_ORDER)
-
- #define init_task (init_task_union.task)
- #define init_stack (init_task_union.stack)
git://git.whamcloud.com / fs / lustre-release.git / commitdiff