621c14d3f9
add support for explicitly requesting that pmap_enter() create a 2MB page mapping. (Essentially, this feature allows the machine-independent layer to create superpage mappings preemptively, and not wait for automatic promotion to occur.) Export pmap_ps_enabled() to the machine-independent layer. Add a flag to pmap_pv_insert_pde() that specifies whether it should fail or reclaim a PV entry when one is not available. Refactor pmap_enter_pde() into two functions, one by the same name, that is a general-purpose function for creating PDE PG_PS mappings, and another, pmap_enter_2mpage(), that is used to prefault 2MB read- and/or execute-only mappings for execve(2), mmap(2), and shmat(2). Submitted by: Yufeng Zhou <yz70@rice.edu> (an earlier version) Reviewed by: kib, markj Tested by: pho MFC after: 10 days Differential Revision: https://reviews.freebsd.org/D11556 |
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acpica | ||
amd64 | ||
cloudabi32 | ||
cloudabi64 | ||
conf | ||
ia32 | ||
include | ||
linux | ||
linux32 | ||
pci | ||
vmm | ||
Makefile |