powerpc: Merge thread_info.h
David Gibson
david at gibson.dropbear.id.au
Fri Oct 21 15:45:50 EST 2005
Merge ppc32 and ppc64 versions of thread_info.h. They were pretty
similar already, the chief changes are:
- Instead of inline asm to implement current_thread_info(),
which needs to be different for ppc32 and ppc64, we use C with an
asm("r1") register variable. gcc turns it into the same asm as we
used to have for both platforms.
- We replace ppc32's 'local_flags' with the ppc64
'syscall_noerror' field. The noerror flag was in fact the only thing
in the local_flags field anyway, so the ppc64 approach is simpler, and
means we only need a load-immediate/store instead of load/mask/store
when clearing the flag.
- In readiness for 64k pages, when THREAD_SIZE will be less
than a page, ppc64 used kmalloc() rather than get_free_pages() to
allocate the kernel stack. With this patch we do the same for ppc32,
since there's no strong reason not to.
- For ppc64, we no longer export THREAD_SHIFT and THREAD_SIZE
via asm-offsets, thread_info.h can now be safely included in asm, as
on ppc32.
Built and booted on G4 Powerbook (ARCH=ppc and ARCH=powerpc) and
Power5 (ARCH=ppc64 and ARCH=powerpc).
Signed-off-by: David Gibson <david at gibson.dropbear.id.au>
Index: working-2.6/include/asm-powerpc/thread_info.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ working-2.6/include/asm-powerpc/thread_info.h 2005-10-21 15:36:05.000000000 +1000
@@ -0,0 +1,135 @@
+/* thread_info.h: PowerPC low-level thread information
+ * adapted from the i386 version by Paul Mackerras
+ *
+ * Copyright (C) 2002 David Howells (dhowells at redhat.com)
+ * - Incorporating suggestions made by Linus Torvalds and Dave Miller
+ */
+
+#ifndef _ASM_POWERPC_THREAD_INFO_H
+#define _ASM_POWERPC_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+/* We have 8k stacks on ppc32 and 16k on ppc64 */
+
+#ifdef CONFIG_PPC64
+#define THREAD_SHIFT 14
+#else
+#define THREAD_SHIFT 13
+#endif
+
+#define THREAD_SIZE (1 << THREAD_SHIFT)
+
+#ifndef __ASSEMBLY__
+#include <linux/config.h>
+#include <linux/cache.h>
+#include <asm/processor.h>
+#include <asm/page.h>
+#include <linux/stringify.h>
+
+/*
+ * low level task data.
+ */
+struct thread_info {
+ struct task_struct *task; /* main task structure */
+ struct exec_domain *exec_domain; /* execution domain */
+ int cpu; /* cpu we're on */
+ int preempt_count; /* 0 => preemptable,
+ <0 => BUG */
+ struct restart_block restart_block;
+ /* set by force_successful_syscall_return */
+ unsigned char syscall_noerror;
+ /* low level flags - has atomic operations done on it */
+ unsigned long flags ____cacheline_aligned_in_smp;
+};
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ *
+ * preempt_count needs to be 1 initially, until the scheduler is functional.
+ */
+#define INIT_THREAD_INFO(tsk) \
+{ \
+ .task = &tsk, \
+ .exec_domain = &default_exec_domain, \
+ .cpu = 0, \
+ .preempt_count = 1, \
+ .restart_block = { \
+ .fn = do_no_restart_syscall, \
+ }, \
+ .flags = 0, \
+}
+
+#define init_thread_info (init_thread_union.thread_info)
+#define init_stack (init_thread_union.stack)
+
+/* thread information allocation */
+
+#ifdef CONFIG_DEBUG_STACK_USAGE
+#define alloc_thread_info(tsk) \
+ ({ \
+ struct thread_info *ret; \
+ \
+ ret = kmalloc(THREAD_SIZE, GFP_KERNEL); \
+ if (ret) \
+ memset(ret, 0, THREAD_SIZE); \
+ ret; \
+ })
+#else
+#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
+#endif
+#define free_thread_info(ti) kfree(ti)
+#define get_thread_info(ti) get_task_struct((ti)->task)
+#define put_thread_info(ti) put_task_struct((ti)->task)
+
+/* how to get the thread information struct from C */
+static inline struct thread_info *current_thread_info(void)
+{
+ register unsigned long sp asm("r1");
+
+ /* gcc4, at least, is smart enough to turn this into a single
+ * rlwinm for ppc32 and clrrdi for ppc64 */
+ return (struct thread_info *)(sp & ~(THREAD_SIZE-1));
+}
+
+#endif /* __ASSEMBLY__ */
+
+#define PREEMPT_ACTIVE 0x10000000
+
+/*
+ * thread information flag bit numbers
+ */
+#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
+#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */
+#define TIF_SIGPENDING 2 /* signal pending */
+#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
+#define TIF_POLLING_NRFLAG 4 /* true if poll_idle() is polling
+ TIF_NEED_RESCHED */
+#define TIF_32BIT 5 /* 32 bit binary */
+/* #define SPARE 6 */
+#define TIF_ABI_PENDING 7 /* 32/64 bit switch needed */
+#define TIF_SYSCALL_AUDIT 8 /* syscall auditing active */
+#define TIF_SINGLESTEP 9 /* singlestepping active */
+#define TIF_MEMDIE 10
+#define TIF_SECCOMP 11 /* secure computing */
+
+/* as above, but as bit values */
+#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
+#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
+#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
+#define _TIF_32BIT (1<<TIF_32BIT)
+/* #define _SPARE (1<<SPARE) */
+#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
+#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
+#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
+#define _TIF_SECCOMP (1<<TIF_SECCOMP)
+#define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP)
+
+#define _TIF_USER_WORK_MASK (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | \
+ _TIF_NEED_RESCHED)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_POWERPC_THREAD_INFO_H */
Index: working-2.6/include/asm-ppc64/thread_info.h
===================================================================
--- working-2.6.orig/include/asm-ppc64/thread_info.h 2005-10-21 14:23:30.000000000 +1000
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,125 +0,0 @@
-/* thread_info.h: PPC low-level thread information
- * adapted from the i386 version by Paul Mackerras
- *
- * Copyright (C) 2002 David Howells (dhowells at redhat.com)
- * - Incorporating suggestions made by Linus Torvalds and Dave Miller
- */
-
-#ifndef _ASM_THREAD_INFO_H
-#define _ASM_THREAD_INFO_H
-
-#ifdef __KERNEL__
-
-#ifndef __ASSEMBLY__
-#include <linux/config.h>
-#include <linux/cache.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <linux/stringify.h>
-
-/*
- * low level task data.
- */
-struct thread_info {
- struct task_struct *task; /* main task structure */
- struct exec_domain *exec_domain; /* execution domain */
- int cpu; /* cpu we're on */
- int preempt_count; /* 0 => preemptable, <0 => BUG */
- struct restart_block restart_block;
- /* set by force_successful_syscall_return */
- unsigned char syscall_noerror;
- /* low level flags - has atomic operations done on it */
- unsigned long flags ____cacheline_aligned_in_smp;
-};
-
-/*
- * macros/functions for gaining access to the thread information structure
- *
- * preempt_count needs to be 1 initially, until the scheduler is functional.
- */
-#define INIT_THREAD_INFO(tsk) \
-{ \
- .task = &tsk, \
- .exec_domain = &default_exec_domain, \
- .cpu = 0, \
- .preempt_count = 1, \
- .restart_block = { \
- .fn = do_no_restart_syscall, \
- }, \
- .flags = 0, \
-}
-
-#define init_thread_info (init_thread_union.thread_info)
-#define init_stack (init_thread_union.stack)
-
-/* thread information allocation */
-
-#define THREAD_SHIFT 14
-#define THREAD_ORDER (THREAD_SHIFT - PAGE_SHIFT)
-#define THREAD_SIZE (1 << THREAD_SHIFT)
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk) \
- ({ \
- struct thread_info *ret; \
- \
- ret = kmalloc(THREAD_SIZE, GFP_KERNEL); \
- if (ret) \
- memset(ret, 0, THREAD_SIZE); \
- ret; \
- })
-#else
-#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
-#endif
-#define free_thread_info(ti) kfree(ti)
-#define get_thread_info(ti) get_task_struct((ti)->task)
-#define put_thread_info(ti) put_task_struct((ti)->task)
-
-/* how to get the thread information struct from C */
-static inline struct thread_info *current_thread_info(void)
-{
- struct thread_info *ti;
- __asm__("clrrdi %0,1,%1" : "=r"(ti) : "i" (THREAD_SHIFT));
- return ti;
-}
-
-#endif /* __ASSEMBLY__ */
-
-#define PREEMPT_ACTIVE 0x10000000
-
-/*
- * thread information flag bit numbers
- */
-#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
-#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */
-#define TIF_SIGPENDING 2 /* signal pending */
-#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
-#define TIF_POLLING_NRFLAG 4 /* true if poll_idle() is polling
- TIF_NEED_RESCHED */
-#define TIF_32BIT 5 /* 32 bit binary */
-/* #define SPARE 6 */
-#define TIF_ABI_PENDING 7 /* 32/64 bit switch needed */
-#define TIF_SYSCALL_AUDIT 8 /* syscall auditing active */
-#define TIF_SINGLESTEP 9 /* singlestepping active */
-#define TIF_MEMDIE 10
-#define TIF_SECCOMP 11 /* secure computing */
-
-/* as above, but as bit values */
-#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
-#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
-#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
-#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
-#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
-#define _TIF_32BIT (1<<TIF_32BIT)
-/* #define _SPARE (1<<SPARE) */
-#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
-#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
-#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
-#define _TIF_SECCOMP (1<<TIF_SECCOMP)
-#define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP)
-
-#define _TIF_USER_WORK_MASK (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | \
- _TIF_NEED_RESCHED)
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_THREAD_INFO_H */
Index: working-2.6/include/asm-ppc/thread_info.h
===================================================================
--- working-2.6.orig/include/asm-ppc/thread_info.h 2005-08-23 15:56:17.000000000 +1000
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,107 +0,0 @@
-/* thread_info.h: PPC low-level thread information
- * adapted from the i386 version by Paul Mackerras
- *
- * Copyright (C) 2002 David Howells (dhowells at redhat.com)
- * - Incorporating suggestions made by Linus Torvalds and Dave Miller
- */
-
-#ifndef _ASM_THREAD_INFO_H
-#define _ASM_THREAD_INFO_H
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-/*
- * low level task data.
- * If you change this, change the TI_* offsets below to match.
- */
-struct thread_info {
- struct task_struct *task; /* main task structure */
- struct exec_domain *exec_domain; /* execution domain */
- unsigned long flags; /* low level flags */
- unsigned long local_flags; /* non-racy flags */
- int cpu; /* cpu we're on */
- int preempt_count; /* 0 => preemptable,
- <0 => BUG */
- struct restart_block restart_block;
-};
-
-#define INIT_THREAD_INFO(tsk) \
-{ \
- .task = &tsk, \
- .exec_domain = &default_exec_domain, \
- .flags = 0, \
- .local_flags = 0, \
- .cpu = 0, \
- .preempt_count = 1, \
- .restart_block = { \
- .fn = do_no_restart_syscall, \
- }, \
-}
-
-#define init_thread_info (init_thread_union.thread_info)
-#define init_stack (init_thread_union.stack)
-
-/*
- * macros/functions for gaining access to the thread information structure
- */
-
-/* how to get the thread information struct from C */
-static inline struct thread_info *current_thread_info(void)
-{
- struct thread_info *ti;
- __asm__("rlwinm %0,1,0,0,18" : "=r"(ti));
- return ti;
-}
-
-/* thread information allocation */
-#define alloc_thread_info(tsk) ((struct thread_info *) \
- __get_free_pages(GFP_KERNEL, 1))
-#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
-#define get_thread_info(ti) get_task_struct((ti)->task)
-#define put_thread_info(ti) put_task_struct((ti)->task)
-#endif /* __ASSEMBLY__ */
-
-/*
- * Size of kernel stack for each process.
- */
-#define THREAD_SIZE 8192 /* 2 pages */
-
-#define PREEMPT_ACTIVE 0x10000000
-
-/*
- * thread information flag bit numbers
- */
-#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
-#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */
-#define TIF_SIGPENDING 2 /* signal pending */
-#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
-#define TIF_POLLING_NRFLAG 4 /* true if poll_idle() is polling
- TIF_NEED_RESCHED */
-#define TIF_MEMDIE 5
-#define TIF_SYSCALL_AUDIT 6 /* syscall auditing active */
-#define TIF_SECCOMP 7 /* secure computing */
-
-/* as above, but as bit values */
-#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
-#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
-#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
-#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
-#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
-#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
-#define _TIF_SECCOMP (1<<TIF_SECCOMP)
-
-#define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP)
-
-/*
- * Non racy (local) flags bit numbers
- */
-#define TIFL_FORCE_NOERROR 0 /* don't return error from current
- syscall even if result < 0 */
-
-/* as above, but as bit values */
-#define _TIFL_FORCE_NOERROR (1<<TIFL_FORCE_NOERROR)
-
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_THREAD_INFO_H */
Index: working-2.6/arch/powerpc/kernel/asm-offsets.c
===================================================================
--- working-2.6.orig/arch/powerpc/kernel/asm-offsets.c 2005-10-21 14:23:30.000000000 +1000
+++ working-2.6/arch/powerpc/kernel/asm-offsets.c 2005-10-21 15:36:05.000000000 +1000
@@ -56,8 +56,6 @@
DEFINE(THREAD, offsetof(struct task_struct, thread));
DEFINE(MM, offsetof(struct task_struct, mm));
#ifdef CONFIG_PPC64
- DEFINE(THREAD_SHIFT, THREAD_SHIFT);
- DEFINE(THREAD_SIZE, THREAD_SIZE);
DEFINE(AUDITCONTEXT, offsetof(struct task_struct, audit_context));
#else
DEFINE(THREAD_INFO, offsetof(struct task_struct, thread_info));
@@ -94,12 +92,10 @@
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
-#ifdef CONFIG_PPC64
DEFINE(TI_SC_NOERR, offsetof(struct thread_info, syscall_noerror));
-#else
+#ifdef CONFIG_PPC32
DEFINE(TI_TASK, offsetof(struct thread_info, task));
DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain));
- DEFINE(TI_LOCAL_FLAGS, offsetof(struct thread_info, local_flags));
DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
#endif /* CONFIG_PPC64 */
Index: working-2.6/arch/powerpc/kernel/entry_32.S
===================================================================
--- working-2.6.orig/arch/powerpc/kernel/entry_32.S 2005-10-21 15:03:46.000000000 +1000
+++ working-2.6/arch/powerpc/kernel/entry_32.S 2005-10-21 15:36:05.000000000 +1000
@@ -199,10 +199,9 @@
#ifdef SHOW_SYSCALLS
bl do_show_syscall
#endif /* SHOW_SYSCALLS */
- rlwinm r10,r1,0,0,18 /* current_thread_info() */
- lwz r11,TI_LOCAL_FLAGS(r10)
- rlwinm r11,r11,0,~_TIFL_FORCE_NOERROR
- stw r11,TI_LOCAL_FLAGS(r10)
+ rlwinm r10,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
+ li r11,0
+ stb r11,TI_SC_NOERR(r10)
lwz r11,TI_FLAGS(r10)
andi. r11,r11,_TIF_SYSCALL_T_OR_A
bne- syscall_dotrace
@@ -225,10 +224,10 @@
mr r6,r3
li r11,-_LAST_ERRNO
cmplw 0,r3,r11
- rlwinm r12,r1,0,0,18 /* current_thread_info() */
+ rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
blt+ 30f
- lwz r11,TI_LOCAL_FLAGS(r12)
- andi. r11,r11,_TIFL_FORCE_NOERROR
+ lbz r11,TI_SC_NOERR(r12)
+ cmpwi r11,0
bne 30f
neg r3,r3
lwz r10,_CCR(r1) /* Set SO bit in CR */
@@ -315,7 +314,7 @@
LOAD_MSR_KERNEL(r10,MSR_KERNEL) /* doesn't include MSR_EE */
SYNC
MTMSRD(r10) /* disable interrupts again */
- rlwinm r12,r1,0,0,18 /* current_thread_info() */
+ rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
lwz r9,TI_FLAGS(r12)
5:
andi. r0,r9,_TIF_NEED_RESCHED
@@ -630,7 +629,7 @@
.globl sigreturn_exit
sigreturn_exit:
subi r1,r3,STACK_FRAME_OVERHEAD
- rlwinm r12,r1,0,0,18 /* current_thread_info() */
+ rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
lwz r9,TI_FLAGS(r12)
andi. r0,r9,_TIF_SYSCALL_T_OR_A
beq+ ret_from_except_full
@@ -657,7 +656,7 @@
user_exc_return: /* r10 contains MSR_KERNEL here */
/* Check current_thread_info()->flags */
- rlwinm r9,r1,0,0,18
+ rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
lwz r9,TI_FLAGS(r9)
andi. r0,r9,(_TIF_SIGPENDING|_TIF_NEED_RESCHED)
bne do_work
@@ -677,7 +676,7 @@
/* N.B. the only way to get here is from the beq following ret_from_except. */
resume_kernel:
/* check current_thread_info->preempt_count */
- rlwinm r9,r1,0,0,18
+ rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
lwz r0,TI_PREEMPT(r9)
cmpwi 0,r0,0 /* if non-zero, just restore regs and return */
bne restore
@@ -687,7 +686,7 @@
andi. r0,r3,MSR_EE /* interrupts off? */
beq restore /* don't schedule if so */
1: bl preempt_schedule_irq
- rlwinm r9,r1,0,0,18
+ rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
lwz r3,TI_FLAGS(r9)
andi. r0,r3,_TIF_NEED_RESCHED
bne- 1b
@@ -889,7 +888,7 @@
LOAD_MSR_KERNEL(r10,MSR_KERNEL)
SYNC
MTMSRD(r10) /* disable interrupts */
- rlwinm r9,r1,0,0,18
+ rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
lwz r9,TI_FLAGS(r9)
andi. r0,r9,_TIF_NEED_RESCHED
bne- do_resched
Index: working-2.6/arch/ppc/kernel/asm-offsets.c
===================================================================
--- working-2.6.orig/arch/ppc/kernel/asm-offsets.c 2005-10-21 14:23:30.000000000 +1000
+++ working-2.6/arch/ppc/kernel/asm-offsets.c 2005-10-21 15:36:05.000000000 +1000
@@ -130,10 +130,10 @@
DEFINE(CPU_SPEC_FEATURES, offsetof(struct cpu_spec, cpu_features));
DEFINE(CPU_SPEC_SETUP, offsetof(struct cpu_spec, cpu_setup));
+ DEFINE(TI_SC_NOERR, offsetof(struct thread_info, syscall_noerror));
DEFINE(TI_TASK, offsetof(struct thread_info, task));
DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain));
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
- DEFINE(TI_LOCAL_FLAGS, offsetof(struct thread_info, local_flags));
DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
Index: working-2.6/include/asm-ppc/ptrace.h
===================================================================
--- working-2.6.orig/include/asm-ppc/ptrace.h 2005-10-12 17:10:16.000000000 +1000
+++ working-2.6/include/asm-ppc/ptrace.h 2005-10-21 15:36:05.000000000 +1000
@@ -57,7 +57,7 @@
#define force_successful_syscall_return() \
do { \
- current_thread_info()->local_flags |= _TIFL_FORCE_NOERROR; \
+ current_thread_info()->syscall_noerror = 1; \
} while(0)
/*
Index: working-2.6/arch/ppc/kernel/entry.S
===================================================================
--- working-2.6.orig/arch/ppc/kernel/entry.S 2005-10-21 14:23:30.000000000 +1000
+++ working-2.6/arch/ppc/kernel/entry.S 2005-10-21 15:36:05.000000000 +1000
@@ -200,9 +200,8 @@
bl do_show_syscall
#endif /* SHOW_SYSCALLS */
rlwinm r10,r1,0,0,18 /* current_thread_info() */
- lwz r11,TI_LOCAL_FLAGS(r10)
- rlwinm r11,r11,0,~_TIFL_FORCE_NOERROR
- stw r11,TI_LOCAL_FLAGS(r10)
+ li r11,0
+ stb r11,TI_SC_NOERR(r10)
lwz r11,TI_FLAGS(r10)
andi. r11,r11,_TIF_SYSCALL_T_OR_A
bne- syscall_dotrace
@@ -227,8 +226,8 @@
cmplw 0,r3,r11
rlwinm r12,r1,0,0,18 /* current_thread_info() */
blt+ 30f
- lwz r11,TI_LOCAL_FLAGS(r12)
- andi. r11,r11,_TIFL_FORCE_NOERROR
+ lbz r11,TI_SC_NOERR(r12)
+ cmpwi r11,0
bne 30f
neg r3,r3
lwz r10,_CCR(r1) /* Set SO bit in CR */
Index: working-2.6/arch/powerpc/kernel/head_64.S
===================================================================
--- working-2.6.orig/arch/powerpc/kernel/head_64.S 2005-10-21 14:23:30.000000000 +1000
+++ working-2.6/arch/powerpc/kernel/head_64.S 2005-10-21 15:36:05.000000000 +1000
@@ -36,6 +36,7 @@
#include <asm/setup.h>
#include <asm/hvcall.h>
#include <asm/iSeries/LparMap.h>
+#include <asm/thread_info.h>
#ifdef CONFIG_PPC_ISERIES
#define DO_SOFT_DISABLE
Index: working-2.6/arch/powerpc/kernel/misc_64.S
===================================================================
--- working-2.6.orig/arch/powerpc/kernel/misc_64.S 2005-10-21 14:23:30.000000000 +1000
+++ working-2.6/arch/powerpc/kernel/misc_64.S 2005-10-21 15:36:05.000000000 +1000
@@ -26,6 +26,7 @@
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
#include <asm/cputable.h>
+#include <asm/thread_info.h>
.text
Index: working-2.6/arch/ppc64/kernel/asm-offsets.c
===================================================================
--- working-2.6.orig/arch/ppc64/kernel/asm-offsets.c 2005-10-21 14:23:30.000000000 +1000
+++ working-2.6/arch/ppc64/kernel/asm-offsets.c 2005-10-21 15:36:28.000000000 +1000
@@ -46,8 +46,6 @@
int main(void)
{
/* thread struct on stack */
- DEFINE(THREAD_SHIFT, THREAD_SHIFT);
- DEFINE(THREAD_SIZE, THREAD_SIZE);
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
DEFINE(TI_SC_NOERR, offsetof(struct thread_info, syscall_noerror));
Index: working-2.6/arch/ppc64/kernel/head.S
===================================================================
--- working-2.6.orig/arch/ppc64/kernel/head.S 2005-10-21 14:23:30.000000000 +1000
+++ working-2.6/arch/ppc64/kernel/head.S 2005-10-21 15:36:50.000000000 +1000
@@ -36,6 +36,7 @@
#include <asm/setup.h>
#include <asm/hvcall.h>
#include <asm/iSeries/LparMap.h>
+#include <asm/thread_info.h>
#ifdef CONFIG_PPC_ISERIES
#define DO_SOFT_DISABLE
Index: working-2.6/arch/ppc64/kernel/misc.S
===================================================================
--- working-2.6.orig/arch/ppc64/kernel/misc.S 2005-10-21 15:01:20.000000000 +1000
+++ working-2.6/arch/ppc64/kernel/misc.S 2005-10-21 15:37:10.000000000 +1000
@@ -28,6 +28,7 @@
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
#include <asm/cputable.h>
+#include <asm/thread_info.h>
.text
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/people/dgibson
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