d5b59a7120
On parisc we want to be as much as possible compatible to the major architectures like x86. Those architectures have MAP_TYPE defined as 0x0f which covers MAP_SHARED and MAP_PRIVATE and leaves two more bits unused. In contrast, on parisc we have MAP_TYPE defined to 0x03 which covers MAP_SHARED and MAP_PRIVATE only. But we don't have the 2 bits free as x86. Usually that's not a problem, but during the discussions for pmem+dax support the idea came up to use the two remaining bits of MAP_TYPE (on x86 and others) for the new MAP_DIRECT and MAP_SYNC flags. One requirement is, that an old kernel should correctly handle MAP_DIRECT and MAP_SYNC and fail on those if set. This only works if MAP_TYPE has 4 bits. Even though the pmem+dax people now choosed another solution via MAP_SHARED_VALIDATE, let's still proceed to be more compatible to x86 by adding two more bits for future usage. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: John David Anglin <dave.anglin@bell.net> |
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| boot | ||
| configs | ||
| include | ||
| kernel | ||
| lib | ||
| math-emu | ||
| mm | ||
| oprofile | ||
| defpalo.conf | ||
| install.sh | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||
| nm | ||