Jeff Roberson 3cf3b4e641 Make page busy state deterministic on free. Pages must be xbusy when ... removed from objects including calls to free. Pages must not be xbusy when freed and not on an object. Strengthen assertions to match these expectations. In practice very little code had to change busy handling to meet these rules but we can now make stronger guarantees to busy holders and avoid conditionally dropping busy in free. Refine vm_page_remove() and vm_page_replace() semantics now that we have stronger guarantees about busy state. This removes redundant and potentially problematic code that has proliferated. Discussed with: markj Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D22822		2019-12-22 06:56:44 +00:00
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cloudabi	Fix the last few cases that grab without busy or valid. The grab functions must	2019-12-02 22:38:25 +00:00
cloudabi32	sysent: Reduce duplication and improve readability.	2019-12-06 23:59:23 +00:00
cloudabi64	sysent: Reduce duplication and improve readability.	2019-12-06 23:59:23 +00:00
freebsd32	Copy out aux args after the argument and environment vectors.	2019-12-09 19:17:28 +00:00
ia32	Use uintptr_t instead of register_t * for the stack base.	2019-12-03 23:17:54 +00:00
lindebugfs	LinuxKPI: Finalize move of lindebugfs from ports to base.	2019-05-19 15:44:21 +00:00
linprocfs	linprocfs: Make sure to report -1 as tty when we have no controlling tty.	2019-11-11 00:21:05 +00:00
linsysfs	Create a "drm" subdirectory for drm devices in linsysfs. Recent versions of	2019-09-23 12:27:55 +00:00
linux	Add a hack to make ^T work for Linux binaries, enabled with	2019-12-16 20:15:44 +00:00
linuxkpi/common	Make page busy state deterministic on free. Pages must be xbusy when	2019-12-22 06:56:44 +00:00
ndis	Fix compilation with 'option NDISAPI + device ndis' and	2019-01-30 11:40:12 +00:00
netbsd	sys/compat: further adoption of SPDX licensing ID tags.	2017-11-27 15:13:23 +00:00
x86bios	x86bios: use M_NOWAIT with mallocs	2018-09-13 07:04:00 +00:00