From 61b1a94254a2158d053458764a5bd30331d73a54 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 20 Sep 2005 13:52:50 +1000 Subject: [PATCH] ppc64: Store virtual address in TLB flush batches This patch slightly change the TLB flush batch mecanism so that we store the full vaddr (including vsid) when adding an entry to the batch so that the flush part doesn't have to get to the context. This cleans it a bit, and paves the way to future updates like dynamic vsids. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/ppc64/mm/tlb.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) (limited to 'arch/ppc64/mm/tlb.c') diff --git a/arch/ppc64/mm/tlb.c b/arch/ppc64/mm/tlb.c index d8a6593a13f0..31afd95bf870 100644 --- a/arch/ppc64/mm/tlb.c +++ b/arch/ppc64/mm/tlb.c @@ -128,12 +128,10 @@ void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf) void hpte_update(struct mm_struct *mm, unsigned long addr, unsigned long pte, int wrprot) { - int i; - unsigned long context = 0; struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch); + unsigned long vsid; + int i; - if (REGION_ID(addr) == USER_REGION_ID) - context = mm->context.id; i = batch->index; /* @@ -143,17 +141,19 @@ void hpte_update(struct mm_struct *mm, unsigned long addr, * up scanning and resetting referenced bits then our batch context * will change mid stream. */ - if (unlikely(i != 0 && context != batch->context)) { + if (unlikely(i != 0 && mm != batch->mm)) { flush_tlb_pending(); i = 0; } - - if (i == 0) { - batch->context = context; + if (i == 0) batch->mm = mm; - } + if (addr < KERNELBASE) { + vsid = get_vsid(mm->context.id, addr); + WARN_ON(vsid == 0); + } else + vsid = get_kernel_vsid(addr); + batch->vaddr[i] = (vsid << 28 ) | (addr & 0x0fffffff); batch->pte[i] = __pte(pte); - batch->addr[i] = addr; batch->index = ++i; if (i >= PPC64_TLB_BATCH_NR) flush_tlb_pending(); @@ -175,10 +175,9 @@ void __flush_tlb_pending(struct ppc64_tlb_batch *batch) local = 1; if (i == 1) - flush_hash_page(batch->context, batch->addr[0], batch->pte[0], - local); + flush_hash_page(batch->vaddr[0], batch->pte[0], local); else - flush_hash_range(batch->context, i, local); + flush_hash_range(i, local); batch->index = 0; put_cpu(); } -- cgit v1.2.2