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Implement a simple heuristic to skip pointless promotion attempts by pmap_enter_quick_locked() and moea64_enter(). Specifically, when vm_fault() calls pmap_enter_quick() to map neighboring pages at the end of a copy-on-write fault, there is no point in attempting promotion in pmap_enter_quick_locked() and moea64_enter(). Promotion will fail because the base pages have differing protection. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D45431 MFC after: 1 week |
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| acpica | ||
| amd64 | ||
| conf | ||
| ia32 | ||
| include | ||
| linux | ||
| linux32 | ||
| pci | ||
| sgx | ||
| vmm | ||
| Makefile | ||