8dc8feb53d
--Eliminate a big ifdef that encompassed all currently-supported architectures except mips and powerpc32. This applied to the case in which we've allocated a superpage but the pager-populated range is insufficient for a superpage mapping. For platforms that don't support superpages the check should be inexpensive as we shouldn't get a superpage in the first place. Make the normal-page fallback logic identical for all platforms and provide a simple implementation of pmap_ps_enabled() for MIPS and Book-E/AIM32 powerpc. --Apply the logic for handling pmap_enter() failure if a superpage mapping can't be supported due to additional protection policy. Use KERN_PROTECTION_FAILURE instead of KERN_FAILURE for this case, and note Intel PKU on amd64 as the first example of such protection policy. Reviewed by: kib, markj, bdragon Differential Revision: https://reviews.freebsd.org/D29439
FreeBSD Source:
This is the top level of the FreeBSD source directory.
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Source Roadmap:
| Directory | Description |
|---|---|
| bin | System/user commands. |
| cddl | Various commands and libraries under the Common Development and Distribution License. |
| contrib | Packages contributed by 3rd parties. |
| crypto | Cryptography stuff (see crypto/README). |
| etc | Template files for /etc. |
| gnu | Various commands and libraries under the GNU Public License. Please see gnu/COPYING and gnu/COPYING.LIB for more information. |
| include | System include files. |
| kerberos5 | Kerberos5 (Heimdal) package. |
| lib | System libraries. |
| libexec | System daemons. |
| release | Release building Makefile & associated tools. |
| rescue | Build system for statically linked /rescue utilities. |
| sbin | System commands. |
| secure | Cryptographic libraries and commands. |
| share | Shared resources. |
| stand | Boot loader sources. |
| sys | Kernel sources. |
sys/arch/conf |
Kernel configuration files. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries. |
| tests | Regression tests which can be run by Kyua. See tests/README for additional information. |
| tools | Utilities for regression testing and miscellaneous tasks. |
| usr.bin | User commands. |
| usr.sbin | System administration commands. |
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