From e71c99fe8da9b8ab07b837a6f317c327d6a2b3df Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Mon, 5 Nov 2018 10:51:44 +0800 Subject: nios2: flush_tlb_mm flush only the pid Currently flush_tlb_mm flushes the entire TLB. Switch it to doing a PID aware flush. This also improves the readibility of flush_tlb_pid. Signed-off-by: Nicholas Piggin Signed-off-by: Ley Foon Tan --- arch/nios2/mm/tlb.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) (limited to 'arch/nios2') diff --git a/arch/nios2/mm/tlb.c b/arch/nios2/mm/tlb.c index b87387d664d1..e87304e1fc3f 100644 --- a/arch/nios2/mm/tlb.c +++ b/arch/nios2/mm/tlb.c @@ -39,18 +39,6 @@ static unsigned long pteaddr_invalid(unsigned long addr) return ((addr | 0xC0000000UL) >> PAGE_SHIFT) << 2; } -/* - * All entries common to a mm share an asid. To effectively flush these - * entries, we just bump the asid. - */ -void flush_tlb_mm(struct mm_struct *mm) -{ - if (current->mm == mm) - flush_tlb_all(); - else - memset(&mm->context, 0, sizeof(mm_context_t)); -} - /* * This one is only used for pages with the global bit set so we don't care * much about the ASID. @@ -233,6 +221,20 @@ void flush_tlb_pid(unsigned long pid) WRCTL(CTL_TLBMISC, org_misc); } +/* + * All entries common to a mm share an asid. To effectively flush these + * entries, we just bump the asid. + */ +void flush_tlb_mm(struct mm_struct *mm) +{ + if (current->mm == mm) { + unsigned long mmu_pid = get_pid_from_context(&mm->context); + flush_tlb_pid(mmu_pid); + } else { + memset(&mm->context, 0, sizeof(mm_context_t)); + } +} + void flush_tlb_all(void) { unsigned long addr = 0; -- cgit v1.2.3-59-g8ed1b