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34eeabff5a
Stop requiring all of the PTEs to have the accessed bit set for superpage promotion to occur. Given that change, add support for promotion to pmap_enter_quick(), which does not set the accessed bit in the PTE that it creates. Since the final mapping within a superpage-aligned and sized region of a memory-mapped file is typically created by a call to pmap_enter_quick(), we now achieve promotions in circumstances where they did not occur before, for example, the X server's read-only mapping of libLLVM-15.so. See also https://www.usenix.org/system/files/atc20-zhu-weixi_0.pdf Reviewed by: kib, markj MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D40478 |
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