version 1.103, 2001/07/12 23:13:15 |
version 1.104, 2001/07/24 16:50:41 |
Line 207 typedef struct pv_entry { |
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Line 207 typedef struct pv_entry { |
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* vm_page, but that's a long story....) |
* vm_page, but that's a long story....) |
* |
* |
* This architecture has nice, fast traps with lots of space for software bits |
* This architecture has nice, fast traps with lots of space for software bits |
* in the TTE. To accellerate ref/mod counts we make use of these features. |
* in the TTE. To accelerate ref/mod counts we make use of these features. |
* |
* |
* When we map a page initially, we place a TTE in the page table. It's |
* When we map a page initially, we place a TTE in the page table. It's |
* inserted with the TLB_W and TLB_ACCESS bits cleared. If a page is really |
* inserted with the TLB_W and TLB_ACCESS bits cleared. If a page is really |