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[S390] remove ieee_instruction_pointer from thread_struct 

The ieee_instruction_pointer can not be read from user space anymore
since git commit 613e1def6b, the ptrace
interface always returns zero. Remove it from the thread_struct. It
is still present in the user_regs_struct for compatability reasons.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2010-10-25 16:10:41 +02:00 committed by Martin Schwidefsky
parent baa071588c
commit ba6cadfebc
4 changed files with 2 additions and 7 deletions
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2
arch/s390/include/asm/processor.h
View File

@ -82,8 +82,6 @@ struct thread_struct {
unsigned long prot_addr; /* address of protection-excep. */ unsigned long prot_addr; /* address of protection-excep. */
unsigned int trap_no; unsigned int trap_no;
per_struct per_info; per_struct per_info;
/* Used to give failing instruction back to user for ieee exceptions */
unsigned long ieee_instruction_pointer;
/* pfault_wait is used to block the process on a pfault event */ /* pfault_wait is used to block the process on a pfault event */
unsigned long pfault_wait; unsigned long pfault_wait;
}; };

3
arch/s390/include/asm/ptrace.h
View File

@ -481,8 +481,7 @@ struct user_regs_struct
* watchpoints. This is the way intel does it. * watchpoints. This is the way intel does it.
*/ */
per_struct per_info; per_struct per_info;
unsigned long ieee_instruction_pointer; unsigned long ieee_instruction_pointer; /* obsolete, always 0 */
/* Used to give failing instruction back to user for ieee exceptions */
}; };
#ifdef __KERNEL__ #ifdef __KERNEL__

3
arch/s390/kernel/compat_ptrace.h
View File

@ -51,8 +51,7 @@ struct user_regs_struct32
* watchpoints. This is the way intel does it. * watchpoints. This is the way intel does it.
*/ */
per_struct32 per_info; per_struct32 per_info;
u32 ieee_instruction_pointer; u32 ieee_instruction_pointer; /* obsolete, always 0 */
/* Used to give failing instruction back to user for ieee exceptions */
}; };
struct user32 { struct user32 {

1
arch/s390/kernel/traps.c
View File

@ -447,7 +447,6 @@ static inline void do_fp_trap(struct pt_regs *regs, void __user *location,
else if (fpc & 0x0800) /* inexact */ else if (fpc & 0x0800) /* inexact */
si.si_code = FPE_FLTRES; si.si_code = FPE_FLTRES;
} }
current->thread.ieee_instruction_pointer = (addr_t) location;
do_trap(pgm_int_code, SIGFPE, do_trap(pgm_int_code, SIGFPE,
"floating point exception", regs, &si); "floating point exception", regs, &si);
} }