diff --git a/arch/sh/include/asm/tlbflush.h b/arch/sh/include/asm/tlbflush.h index e0ac97221ae6bb6a6351331ce72b884fc229ecd1..0df66f0c72847c37a9598f33126237a442ec4366 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 b1fca66bb92eca13b57e2ed6f94cc4ae383cbebd..ca6a5ca64015bf223e64e1303e07bdfa17fd03e8 100644 --- a/arch/sh/kernel/reboot.c +++ b/arch/sh/kernel/reboot.c @@ -9,6 +9,7 @@ #include #include #include +#include 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 3fbe03ce8fe3a665768516dd4e341e783e164e69..a6a20d6de4c0b9535679a85ebbcc8522810b86cc 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 03db41cc126854bdf5b8e61ef7e918d6558e7db3..7f5810f5dfdc4b5141aabcacf7ca6b61f1b5bba5 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) { }