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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-03-05 18:26:24 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:14:18 -0800 |
| commit | 74ae998772041b62e9ad420d602e4f7dbb182cd6 (patch) | |
| tree | 8cbeb2ff56856d357647da6ab62562bac2fe87ad /arch/sparc64/mm/init.c | |
| parent | 3cab0c3e8636d5005041aa52224f796c3a4ef872 (diff) | |
| download | lwn-74ae998772041b62e9ad420d602e4f7dbb182cd6.tar.gz lwn-74ae998772041b62e9ad420d602e4f7dbb182cd6.zip | |
[SPARC64]: Simplify TSB insert checks.
Don't try to avoid putting non-base page sized entries
into the user TSB. It actually costs us more to check
this than it helps.
Eventually we'll have a multiple TSB scheme for user
processes. Once a process starts using larger pages,
we'll allocate and use such a TSB.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/mm/init.c')
| -rw-r--r-- | arch/sparc64/mm/init.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c index 87d5d1af1adb..5930e87dafbc 100644 --- a/arch/sparc64/mm/init.c +++ b/arch/sparc64/mm/init.c @@ -280,6 +280,8 @@ unsigned long _PAGE_SZBITS __read_mostly; void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte) { struct mm_struct *mm; + struct tsb *tsb; + unsigned long tag; if (tlb_type != hypervisor) { unsigned long pfn = pte_pfn(pte); @@ -308,15 +310,10 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t p } mm = vma->vm_mm; - if ((pte_val(pte) & _PAGE_ALL_SZ_BITS) == _PAGE_SZBITS) { - struct tsb *tsb; - unsigned long tag; - - tsb = &mm->context.tsb[(address >> PAGE_SHIFT) & - (mm->context.tsb_nentries - 1UL)]; - tag = (address >> 22UL); - tsb_insert(tsb, tag, pte_val(pte)); - } + tsb = &mm->context.tsb[(address >> PAGE_SHIFT) & + (mm->context.tsb_nentries - 1UL)]; + tag = (address >> 22UL); + tsb_insert(tsb, tag, pte_val(pte)); } void flush_dcache_page(struct page *page) |