e84fe91c51
emulation of managed pages. This required the following `interesting' changes: * File system buffers must be entered with an access type of VM_PROT_READ|VM_PROT_WRITE, so that the pages will be accessible immediately. Otherwise we would have to teach pagemove() to update the R/M information. Since they're never eligible for paging, the latter is overkill. * We must insure that pages allocated before the pmap is completely set up (that is, pages allocated early by the VM system) are not eligible for R/M emulation, since the memory needed for this isn't available. We do this by allocating the pmap's internal memory with uvm_pageboot_alloc(). This also fixes an absolutely horrible hack where the pmap only worked because page 0 happened to be mapped. to be mapped. Also: * Push the wired page counting into the p->v list maintenance functions. This avoids code duplication, and fixes some cases where we were confused about which pages to do it with. * Fix lots of problems associated with pmap_nightmare() (and rename it to pmap_vac_me_harder()). * Since the early pages are no longer considered `managed', just make pmap_*_pv() panic if !pmap_initialized. |
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| .. | ||
| arm32 | ||
| compile | ||
| conf | ||
| dev | ||
| doc | ||
| footbridge | ||
| fpe-arm | ||
| include | ||
| iomd | ||
| isa | ||
| mainbus | ||
| ofw | ||
| pci | ||
| podulebus | ||
| rc7500 | ||
| riscpc | ||
| shark | ||
| vidc | ||
| Makefile | ||