sh: Provide a global TLB flush for U/I-TLB clear. (59615ecd) · Commits · 戴 / test

arch/sh/include/asm/tlbflush.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);

+4 −0

Original line number	Diff line number	Diff line
		@@ -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();

+16 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

+5 −0

Original line number	Diff line number	Diff line
		@@ -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)
		{
		}