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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-12-20 01:41:55 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-12-20 01:43:31 +0100 |
| commit | 0650a4ee30e34ba039940032fdff3719c1b4b000 (patch) | |
| tree | 4f81613aee6f2b8286a751b0b1bd92d86d164fe7 /doc | |
| parent | 3c0b306d01a95e17579d938d8e9e8c527c251a4a (diff) | |
vm_map: Fix taking into account high bits in mask
glibc's sysdeps/mach/hurd/dl-sysdep.c has been wanting to use this for
decades.
* include/string.h (ffs): New declaration.
* vm/vm_map.c: Include <string.h>.
(vm_map_find_entry_anywhere): Separate out high bits from mask, to
compute the maximum offset instead of map->max_offset.
* doc/mach.texi (vm_map): Update documentation accordingly.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/mach.texi | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/doc/mach.texi b/doc/mach.texi index 11b0a066..ff15a95a 100644 --- a/doc/mach.texi +++ b/doc/mach.texi @@ -3434,8 +3434,8 @@ exception. @var{address}. If the @var{anywhere} option is used, this address is ignored. The address actually allocated will be returned in @var{address}. @var{size} is the number of bytes to allocate (rounded by -the system in a machine dependent way). The alignment restriction is -specified by @var{mask}. Bits asserted in this mask must not be +the system in a machine dependent way). The alignment and maximum address +restrictions are specified by @var{mask}. Bits asserted in this mask must not be asserted in the address returned. If @var{anywhere} is set, the kernel should find and allocate any region of the specified size, and return the address of the resulting region in @var{address}. |