From d665767e39fa4a9e725f92d77ba2060c5ce273dc Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Tue, 7 Nov 2017 18:53:06 +1100 Subject: powerpc/64s/radix: Implement _tlbie(l)_va_range flush functions Move the barriers and range iteration down into the _tlbie* level, which improves readability. Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman --- arch/powerpc/mm/tlb-radix.c | 69 +++++++++++++++++++++++++-------------------- 1 file changed, 39 insertions(+), 30 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c index 22b657e4b01a..9916ea2fff43 100644 --- a/arch/powerpc/mm/tlb-radix.c +++ b/arch/powerpc/mm/tlb-radix.c @@ -85,7 +85,7 @@ static inline void _tlbie_pid(unsigned long pid, unsigned long ric) } static inline void __tlbiel_va(unsigned long va, unsigned long pid, - unsigned long ap, unsigned long ric) + unsigned long ap, unsigned long ric) { unsigned long rb,rs,prs,r; @@ -101,13 +101,28 @@ static inline void __tlbiel_va(unsigned long va, unsigned long pid, } static inline void _tlbiel_va(unsigned long va, unsigned long pid, - unsigned long ap, unsigned long ric) + unsigned long psize, unsigned long ric) { + unsigned long ap = mmu_get_ap(psize); + asm volatile("ptesync": : :"memory"); __tlbiel_va(va, pid, ap, ric); asm volatile("ptesync": : :"memory"); } +static inline void _tlbiel_va_range(unsigned long start, unsigned long end, + unsigned long pid, unsigned long page_size, + unsigned long psize) +{ + unsigned long addr; + unsigned long ap = mmu_get_ap(psize); + + asm volatile("ptesync": : :"memory"); + for (addr = start; addr < end; addr += page_size) + __tlbiel_va(addr, pid, ap, RIC_FLUSH_TLB); + asm volatile("ptesync": : :"memory"); +} + static inline void __tlbie_va(unsigned long va, unsigned long pid, unsigned long ap, unsigned long ric) { @@ -125,13 +140,27 @@ static inline void __tlbie_va(unsigned long va, unsigned long pid, } static inline void _tlbie_va(unsigned long va, unsigned long pid, - unsigned long ap, unsigned long ric) + unsigned long psize, unsigned long ric) { + unsigned long ap = mmu_get_ap(psize); + asm volatile("ptesync": : :"memory"); __tlbie_va(va, pid, ap, ric); asm volatile("eieio; tlbsync; ptesync": : :"memory"); } +static inline void _tlbie_va_range(unsigned long start, unsigned long end, + unsigned long pid, unsigned long page_size, + unsigned long psize) +{ + unsigned long addr; + unsigned long ap = mmu_get_ap(psize); + + asm volatile("ptesync": : :"memory"); + for (addr = start; addr < end; addr += page_size) + __tlbie_va(addr, pid, ap, RIC_FLUSH_TLB); + asm volatile("eieio; tlbsync; ptesync": : :"memory"); +} /* * Base TLB flushing operations: @@ -174,12 +203,11 @@ void radix__local_flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmadd int psize) { unsigned long pid; - unsigned long ap = mmu_get_ap(psize); preempt_disable(); pid = mm->context.id; if (pid != MMU_NO_CONTEXT) - _tlbiel_va(vmaddr, pid, ap, RIC_FLUSH_TLB); + _tlbiel_va(vmaddr, pid, psize, RIC_FLUSH_TLB); preempt_enable(); } @@ -239,7 +267,6 @@ void radix__flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmaddr, int psize) { unsigned long pid; - unsigned long ap = mmu_get_ap(psize); pid = mm->context.id; if (unlikely(pid == MMU_NO_CONTEXT)) @@ -247,9 +274,9 @@ void radix__flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmaddr, preempt_disable(); if (!mm_is_thread_local(mm)) - _tlbie_va(vmaddr, pid, ap, RIC_FLUSH_TLB); + _tlbie_va(vmaddr, pid, psize, RIC_FLUSH_TLB); else - _tlbiel_va(vmaddr, pid, ap, RIC_FLUSH_TLB); + _tlbiel_va(vmaddr, pid, psize, RIC_FLUSH_TLB); preempt_enable(); } @@ -336,9 +363,7 @@ void radix__flush_tlb_range_psize(struct mm_struct *mm, unsigned long start, unsigned long end, int psize) { unsigned long pid; - unsigned long addr; bool local; - unsigned long ap = mmu_get_ap(psize); unsigned long page_size = 1UL << mmu_psize_defs[psize].shift; pid = mm->context.id; @@ -354,17 +379,10 @@ void radix__flush_tlb_range_psize(struct mm_struct *mm, unsigned long start, else _tlbie_pid(pid, RIC_FLUSH_TLB); } else { - asm volatile("ptesync": : :"memory"); - for (addr = start; addr < end; addr += page_size) { - if (local) - __tlbiel_va(addr, pid, ap, RIC_FLUSH_TLB); - else - __tlbie_va(addr, pid, ap, RIC_FLUSH_TLB); - } if (local) - asm volatile("ptesync": : :"memory"); + _tlbiel_va_range(start, end, pid, page_size, psize); else - asm volatile("eieio; tlbsync; ptesync": : :"memory"); + _tlbie_va_range(start, end, pid, page_size, psize); } preempt_enable(); } @@ -372,7 +390,6 @@ void radix__flush_tlb_range_psize(struct mm_struct *mm, unsigned long start, #ifdef CONFIG_TRANSPARENT_HUGEPAGE void radix__flush_tlb_collapsed_pmd(struct mm_struct *mm, unsigned long addr) { - unsigned long ap = mmu_get_ap(mmu_virtual_psize); unsigned long pid, end; bool local; @@ -395,19 +412,11 @@ void radix__flush_tlb_collapsed_pmd(struct mm_struct *mm, unsigned long addr) _tlbie_pid(pid, RIC_FLUSH_PWC); /* Then iterate the pages */ - asm volatile("ptesync": : :"memory"); end = addr + HPAGE_PMD_SIZE; - for (; addr < end; addr += PAGE_SIZE) { - if (local) - _tlbiel_va(addr, pid, ap, RIC_FLUSH_TLB); - else - _tlbie_va(addr, pid, ap, RIC_FLUSH_TLB); - } - if (local) - asm volatile("ptesync": : :"memory"); + _tlbiel_va_range(addr, end, pid, PAGE_SIZE, mmu_virtual_psize); else - asm volatile("eieio; tlbsync; ptesync": : :"memory"); + _tlbie_va_range(addr, end, pid, PAGE_SIZE, mmu_virtual_psize); preempt_enable(); } -- cgit v1.2.3