diff options
| author | Grant Grundler <grundler@parisc-linux.org> | 2005-10-22 02:40:07 (GMT) |
|---|---|---|
| committer | Kyle McMartin <kyle@parisc-linux.org> | 2005-10-22 02:40:07 (GMT) |
| commit | 896a375623c3643a3f189353e7d4828c48a7fdf8 (patch) | |
| tree | bb79535f843110f9b2b199890157fcabb0504b43 /include/asm-parisc/tlbflush.h | |
| parent | b2c1fe81df7471de9f7e2918877ac04ec9cde35f (diff) | |
| download | linux-fsl-qoriq-896a375623c3643a3f189353e7d4828c48a7fdf8.tar.xz | |
[PARISC] Make sure use of RFI conforms to PA 2.0 and 1.1 arch docs
2.6.12-rc4-pa3 : first pass at making sure use of RFI conforms to
PA 2.0 arch pages F-4 and F-5, PA 1.1 Arch page 3-19 and 3-20.
The discussion revolves around all the rules for clearing PSW Q-bit.
The hard part is meeting all the rules for "relied upon translation".
.align directive is used to guarantee the critical sequence ends more than
8 instructions (32 bytes) from the end of page.
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'include/asm-parisc/tlbflush.h')
| -rw-r--r-- | include/asm-parisc/tlbflush.h | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/include/asm-parisc/tlbflush.h b/include/asm-parisc/tlbflush.h index eb27b78..efbb2d8 100644 --- a/include/asm-parisc/tlbflush.h +++ b/include/asm-parisc/tlbflush.h @@ -64,29 +64,26 @@ static inline void flush_tlb_range(struct vm_area_struct *vma, { unsigned long npages; - npages = ((end - (start & PAGE_MASK)) + (PAGE_SIZE - 1)) >> PAGE_SHIFT; - if (npages >= 512) /* XXX arbitrary, should be tuned */ + if (npages >= 512) /* 2MB of space: arbitrary, should be tuned */ flush_tlb_all(); else { mtsp(vma->vm_mm->context,1); + purge_tlb_start(); if (split_tlb) { - purge_tlb_start(); while (npages--) { pdtlb(start); pitlb(start); start += PAGE_SIZE; } - purge_tlb_end(); } else { - purge_tlb_start(); while (npages--) { pdtlb(start); start += PAGE_SIZE; } - purge_tlb_end(); } + purge_tlb_end(); } } |