reviewed by christos@, cube@ and martin@.
While here, remove a printf() in mpu_attach() (ic/mpu.c) to remove
an empty line in some frontends (mpu_isa.c, etc).
to satisfy the SuSv3/POSIX-2004/etc requirement that "If there is no
foreground process group, tcgetpgrp() shall return a value greater than 1
that does not match the process group ID of any existing process group."
Should fix PR standards/28493 and zsh.
(ie. just before we skip the per-page cache invalidations while tearing down
each context) instead of just before we recycle all the contexts in ctx_alloc().
the latter is not good enough since a (physically tagged) L1 cache line is
valid for all contexts, not just the one that was used to instantiate it.
fixes PRs 24126, 25669 and 27730.
some strange type names with their C99 equivalent.
This avoids sign extension of 32bit fields (like the file size) on 64bit
archs.
Based on a patch supplied by Olaf 'Rhialto' Seibert in PR kern/28471;
should fix that PR.
is set, so that the single-step trap happens in the thread's context
and not in the middle of _setcontext_u.
XXX might be able to do something here with iret, too, but it needs
more testing.
1. make fileops const
2. add 2 new negative errno's to `officially' support the cloning hack:
- EDUPFD (used to overload ENODEV)
- EMOVEFD (used to overload ENXIO)
3. Created an fdclone() function to encapsulate the operations needed for
EMOVEFD, and made all cloners use it.
4. Centralize the local noop/badop fileops functions to:
fnullop_fcntl, fnullop_poll, fnullop_kqfilter, fbadop_stat
xtraeme