src-test2/sys/dev/drm2, branch masterFreeBSD source treehttps://cgit-dev.freebsd.org/src-test2/atom?h=master2020-10-06T18:13:15ZDon't permit DRM buffer mappings to be upgraded to executable.2020-10-06T18:13:15ZJohn Baldwinjhb@FreeBSD.org2020-10-06T18:13:15Zurn:sha1:f34702b76ec5c872d9cc0c628e3b60a93e799e1a
Reviewed by: kib
MFC after: 1 month
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D26697
drm2: Fix build after r3652642020-09-03T05:25:39ZNiclas Zeisingzeising@FreeBSD.org2020-09-03T05:25:39Zurn:sha1:1f42dc843f03c1794d105df53b92fdec6219f7f4
Fix the build after r365264, I forgot to exclude arm in one more place.
Reported by: rpokala
Approved by: manu (implicit, build fix)
MFC after: 3 days
X-MFC-With: 365264
Pointy-hat to: zeising
drm2: Further improve deprecation message2020-09-02T18:04:49ZNiclas Zeisingzeising@FreeBSD.org2020-09-02T18:04:49Zurn:sha1:662c3e20840136baf2ba4ecac654866491f86d7c
Further improve the drm2 deprecation message, only displaying information
about the port for relevant architectures, and skipping the message
completely from arm, which uses some parts of drm2 still.
This is mostly intended to be merged to 12, since the base bits of drm2 on
FreeBSD 13 are only really used on arm.
Reviewed by: manu, mmel
Approved by: manu
MFC after: 3 days
X-MFC-with: r364737
Differential Revision: https://reviews.freebsd.org/D26275
drm2: Update deprecation message2020-08-24T22:53:23ZNiclas Zeisingzeising@FreeBSD.org2020-08-24T22:53:23Zurn:sha1:8d9b400f9d02116e528968fa4e7d3c479e326e2a
Update the deprecation message in the drm2 (aka legacy drm) drivers to point
towards the graphics/drm-kmod ports for all architectures, not just amd64.
drm-kmod has support for more architectures these days, and the
graphics/drm-legacy-kmod port is being deprecated.
Approved by: imp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26174
Convert a few triviail consumers to the new unlocked grab API.2020-02-28T20:34:30ZJeff Robersonjeff@FreeBSD.org2020-02-28T20:34:30Zurn:sha1:7aaf252c964f1cecd008adaf07ea0b8659805721
Reviewed by: kib, markj
Differential Revision: https://reviews.freebsd.org/D23847
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (5 of many)2020-02-16T17:11:54ZPawel Biernackikaktus@FreeBSD.org2020-02-16T17:11:54Zurn:sha1:59e4be225c4bca5e0e76b7703594d5c03a24a825
r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly marked). Use it in
preparation for a general review of all nodes.
This is non-functional change that adds annotations to SYSCTL_NODE and
SYSCTL_PROC nodes using one of the soon-to-be-required flags.
Reviewed by: imp, kib
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D23633
Add KERNEL_PANICKED macro for use in place of direct panicstr tests2020-01-12T06:07:54ZMateusz Guzikmjg@FreeBSD.org2020-01-12T06:07:54Zurn:sha1:879e0604ee6ac0ded87f6754141e7af25f4b7d5aMake page busy state deterministic on free. Pages must be xbusy when2019-12-22T06:56:44ZJeff Robersonjeff@FreeBSD.org2019-12-22T06:56:44Zurn:sha1:3cf3b4e6419d14ed25c0b67b84763b3be937c8b5
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
(4/6) Protect page valid with the busy lock.2019-10-15T03:45:41ZJeff Robersonjeff@FreeBSD.org2019-10-15T03:45:41Zurn:sha1:0012f373e43db2341c20329163ed2d5ad3b0f341
Atomics are used for page busy and valid state when the shared busy is
held. The details of the locking protocol and valid and dirty
synchronization are in the updated vm_page.h comments.
Reviewed by: kib, markj
Tested by: pho
Sponsored by: Netflix, Intel
Differential Revision: https://reviews.freebsd.org/D21594
Replace redundant code with a few new vm_page_grab facilities:2019-09-10T19:08:01ZJeff Robersonjeff@FreeBSD.org2019-09-10T19:08:01Zurn:sha1:c75757481f831d2b28741c7f4f62176a76444c2e
- VM_ALLOC_NOCREAT will grab without creating a page.
- vm_page_grab_valid() will grab and page in if necessary.
- vm_page_busy_acquire() automates some busy acquire loops.
Discussed with: alc, kib, markj
Tested by: pho (part of larger branch)
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D21546