From 32974ad4907cdde6c9de612cd1b2ee0568fb9409 Mon Sep 17 00:00:00 2001 From: Tony Luck Date: Mon, 8 Feb 2010 10:42:17 -0800 Subject: [IA64] Remove COMPAT_IA32 support This has been broken since May 2008 when Al Viro killed altroot support. Since nobody has complained, it would appear that there are no users of this code (A plausible theory since the main OSVs that support ia64 prefer to use the IA32-EL software emulation). Signed-off-by: Tony Luck --- arch/ia64/kernel/process.c | 55 +++------------------------------------------- 1 file changed, 3 insertions(+), 52 deletions(-) (limited to 'arch/ia64/kernel/process.c') diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index 9bcec9945c12..883ecc9cfef5 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -33,7 +33,6 @@ #include #include #include -#include #include #include #include @@ -358,11 +357,6 @@ ia64_save_extra (struct task_struct *task) if (info & PFM_CPUINFO_SYST_WIDE) pfm_syst_wide_update_task(task, info, 0); #endif - -#ifdef CONFIG_IA32_SUPPORT - if (IS_IA32_PROCESS(task_pt_regs(task))) - ia32_save_state(task); -#endif } void @@ -383,11 +377,6 @@ ia64_load_extra (struct task_struct *task) if (info & PFM_CPUINFO_SYST_WIDE) pfm_syst_wide_update_task(task, info, 1); #endif - -#ifdef CONFIG_IA32_SUPPORT - if (IS_IA32_PROCESS(task_pt_regs(task))) - ia32_load_state(task); -#endif } /* @@ -426,7 +415,7 @@ copy_thread(unsigned long clone_flags, unsigned long user_stack_base, unsigned long user_stack_size, struct task_struct *p, struct pt_regs *regs) { - extern char ia64_ret_from_clone, ia32_ret_from_clone; + extern char ia64_ret_from_clone; struct switch_stack *child_stack, *stack; unsigned long rbs, child_rbs, rbs_size; struct pt_regs *child_ptregs; @@ -457,7 +446,7 @@ copy_thread(unsigned long clone_flags, memcpy((void *) child_rbs, (void *) rbs, rbs_size); if (likely(user_mode(child_ptregs))) { - if ((clone_flags & CLONE_SETTLS) && !IS_IA32_PROCESS(regs)) + if (clone_flags & CLONE_SETTLS) child_ptregs->r13 = regs->r16; /* see sys_clone2() in entry.S */ if (user_stack_base) { child_ptregs->r12 = user_stack_base + user_stack_size - 16; @@ -477,10 +466,7 @@ copy_thread(unsigned long clone_flags, child_ptregs->r13 = (unsigned long) p; /* set `current' pointer */ } child_stack->ar_bspstore = child_rbs + rbs_size; - if (IS_IA32_PROCESS(regs)) - child_stack->b0 = (unsigned long) &ia32_ret_from_clone; - else - child_stack->b0 = (unsigned long) &ia64_ret_from_clone; + child_stack->b0 = (unsigned long) &ia64_ret_from_clone; /* copy parts of thread_struct: */ p->thread.ksp = (unsigned long) child_stack - 16; @@ -515,22 +501,6 @@ copy_thread(unsigned long clone_flags, p->thread.flags = ((current->thread.flags & ~THREAD_FLAGS_TO_CLEAR) | THREAD_FLAGS_TO_SET); ia64_drop_fpu(p); /* don't pick up stale state from a CPU's fph */ -#ifdef CONFIG_IA32_SUPPORT - /* - * If we're cloning an IA32 task then save the IA32 extra - * state from the current task to the new task - */ - if (IS_IA32_PROCESS(task_pt_regs(current))) { - ia32_save_state(p); - if (clone_flags & CLONE_SETTLS) - retval = ia32_clone_tls(p, child_ptregs); - - /* Copy partially mapped page list */ - if (!retval) - retval = ia32_copy_ia64_partial_page_list(p, - clone_flags); - } -#endif #ifdef CONFIG_PERFMON if (current->thread.pfm_context) @@ -704,15 +674,6 @@ EXPORT_SYMBOL(kernel_thread); int kernel_thread_helper (int (*fn)(void *), void *arg) { -#ifdef CONFIG_IA32_SUPPORT - if (IS_IA32_PROCESS(task_pt_regs(current))) { - /* A kernel thread is always a 64-bit process. */ - current->thread.map_base = DEFAULT_MAP_BASE; - current->thread.task_size = DEFAULT_TASK_SIZE; - ia64_set_kr(IA64_KR_IO_BASE, current->thread.old_iob); - ia64_set_kr(IA64_KR_TSSD, current->thread.old_k1); - } -#endif return (*fn)(arg); } @@ -725,14 +686,6 @@ flush_thread (void) /* drop floating-point and debug-register state if it exists: */ current->thread.flags &= ~(IA64_THREAD_FPH_VALID | IA64_THREAD_DBG_VALID); ia64_drop_fpu(current); -#ifdef CONFIG_IA32_SUPPORT - if (IS_IA32_PROCESS(task_pt_regs(current))) { - ia32_drop_ia64_partial_page_list(current); - current->thread.task_size = IA32_PAGE_OFFSET; - set_fs(USER_DS); - memset(current->thread.tls_array, 0, sizeof(current->thread.tls_array)); - } -#endif } /* @@ -753,8 +706,6 @@ exit_thread (void) if (current->thread.flags & IA64_THREAD_DBG_VALID) pfm_release_debug_registers(current); #endif - if (IS_IA32_PROCESS(task_pt_regs(current))) - ia32_drop_ia64_partial_page_list(current); } unsigned long -- cgit v1.2.1