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sh: __addr_ok() and other misc nommu fixups.

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A few more outstanding nommu fixups..

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Yoshinori Sato
2006-09-27 17:25:07 +09:00
committed by Paul Mundt
parent 0b8929354c
commit a2d1a5fae6
9 changed files with 33 additions and 22 deletions
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13
arch/sh/kernel/process.c
View File

@@ -302,9 +302,11 @@ ubc_set_tracing(int asid, unsigned long pc)
{
ctrl_outl(pc, UBC_BARA);
#ifdef CONFIG_MMU
/* We don't have any ASID settings for the SH-2! */
if (cpu_data->type != CPU_SH7604)
ctrl_outb(asid, UBC_BASRA);
#endif
ctrl_outl(0, UBC_BAMRA);
@@ -347,6 +349,7 @@ struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *ne
}
#endif
#ifdef CONFIG_MMU
/*
* Restore the kernel mode register
* k7 (r7_bank1)
@@ -354,19 +357,21 @@ struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *ne
asm volatile("ldc %0, r7_bank"
: /* no output */
: "r" (task_thread_info(next)));
#endif
#ifdef CONFIG_MMU
/* If no tasks are using the UBC, we're done */
if (ubc_usercnt == 0)
/* If no tasks are using the UBC, we're done */;
else if (next->thread.ubc_pc && next->mm) {
ubc_set_tracing(next->mm->context & MMU_CONTEXT_ASID_MASK,
next->thread.ubc_pc);
int asid = 0;
#ifdef CONFIG_MMU
asid |= next->mm->context & MMU_CONTEXT_ASID_MASK;
#endif
ubc_set_tracing(asid, next->thread.ubc_pc);
} else {
ctrl_outw(0, UBC_BBRA);
ctrl_outw(0, UBC_BBRB);
}
#endif
return prev;
}

10
arch/sh/kernel/sh_ksyms.c
View File

@@ -79,20 +79,18 @@ EXPORT_SYMBOL(strcpy);
DECLARE_EXPORT(__movstr_i4_even);
DECLARE_EXPORT(__movstr_i4_odd);
DECLARE_EXPORT(__movstrSI12_i4);
#endif
#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB)
/* needed by some modules */
EXPORT_SYMBOL(flush_cache_all);
EXPORT_SYMBOL(flush_cache_range);
EXPORT_SYMBOL(flush_dcache_page);
EXPORT_SYMBOL(__flush_purge_region);
EXPORT_SYMBOL(clear_user_page);
#endif
#if defined(CONFIG_SH7705_CACHE_32KB)
EXPORT_SYMBOL(flush_cache_all);
EXPORT_SYMBOL(flush_cache_range);
EXPORT_SYMBOL(flush_dcache_page);
EXPORT_SYMBOL(__flush_purge_region);
#ifdef CONFIG_MMU
EXPORT_SYMBOL(clear_user_page);
#endif
EXPORT_SYMBOL(flush_tlb_page);

2
arch/sh/kernel/sys_sh.c
View File

@@ -44,7 +44,7 @@ asmlinkage int sys_pipe(unsigned long r4, unsigned long r5,
return error;
}
#if defined(HAVE_ARCH_UNMAPPED_AREA)
#if defined(HAVE_ARCH_UNMAPPED_AREA) && defined(CONFIG_MMU)
/*
* To avoid cache alias, we map the shard page with same color.
*/