diff options
| -rw-r--r-- | arch/sh/include/asm/tlbflush.h | 2 | ||||
| -rw-r--r-- | arch/sh/kernel/reboot.c | 4 | ||||
| -rw-r--r-- | arch/sh/mm/tlbflush_32.c | 16 | ||||
| -rw-r--r-- | arch/sh/mm/tlbflush_64.c | 5 |
4 files changed, 27 insertions, 0 deletions
diff --git a/arch/sh/include/asm/tlbflush.h b/arch/sh/include/asm/tlbflush.h index e0ac972..0df66f0 100644 --- a/arch/sh/include/asm/tlbflush.h +++ b/arch/sh/include/asm/tlbflush.h @@ -21,6 +21,8 @@ extern void local_flush_tlb_kernel_range(unsigned long start, unsigned long end); extern void local_flush_tlb_one(unsigned long asid, unsigned long page); +extern void __flush_tlb_global(void); + #ifdef CONFIG_SMP extern void flush_tlb_all(void); diff --git a/arch/sh/kernel/reboot.c b/arch/sh/kernel/reboot.c index b1fca66..ca6a5ca 100644 --- a/arch/sh/kernel/reboot.c +++ b/arch/sh/kernel/reboot.c @@ -9,6 +9,7 @@ #include <asm/addrspace.h> #include <asm/reboot.h> #include <asm/system.h> +#include <asm/tlbflush.h> void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); @@ -25,6 +26,9 @@ static void native_machine_restart(char * __unused) { local_irq_disable(); + /* Destroy all of the TLBs in preparation for reset by MMU */ + __flush_tlb_global(); + /* Address error with SR.BL=1 first. */ trigger_address_error(); diff --git a/arch/sh/mm/tlbflush_32.c b/arch/sh/mm/tlbflush_32.c index 3fbe03c..a6a20d6 100644 --- a/arch/sh/mm/tlbflush_32.c +++ b/arch/sh/mm/tlbflush_32.c @@ -119,3 +119,19 @@ void local_flush_tlb_mm(struct mm_struct *mm) local_irq_restore(flags); } } + +void __flush_tlb_global(void) +{ + unsigned long flags; + + local_irq_save(flags); + + /* + * This is the most destructive of the TLB flushing options, + * and will tear down all of the UTLB/ITLB mappings, including + * wired entries. + */ + __raw_writel(__raw_readl(MMUCR) | MMUCR_TI, MMUCR); + + local_irq_restore(flags); +} diff --git a/arch/sh/mm/tlbflush_64.c b/arch/sh/mm/tlbflush_64.c index 03db41c..7f5810f 100644 --- a/arch/sh/mm/tlbflush_64.c +++ b/arch/sh/mm/tlbflush_64.c @@ -455,6 +455,11 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) flush_tlb_all(); } +void __flush_tlb_global(void) +{ + flush_tlb_all(); +} + void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte) { } |
