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| 6d3c78d9 | markj | Oct. 20, 2021, 1:22 a.m. | Rewrite the vm_page_alloc manual page
Document the new allocator variants and flesh out the description of some details of the page allocator interface. Reviewed by: kib, alc Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D32035cgit |
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| 02fb0585 | markj | Oct. 20, 2021, 1:22 a.m. | vm_page: Drop handling of VM_ALLOC_NOOBJ in vm_page_alloc_contig_domain()
As in vm_page_alloc_domain_after(), unconditionally preserve PG_ZERO. Implement vm_page_alloc_noobj_contig_domain(). Reviewed by: kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D32034cgit |
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| c40cf9bc | markj | Oct. 20, 2021, 1:22 a.m. | vm_page: Stop handling VM_ALLOC_NOOBJ in vm_page_alloc_domain_after()
This makes the allocator simpler since it can assume object != NULL. Also modify the function to unconditionally preserve PG_ZERO, so VM_ALLOC_ZERO is effectively ignored (and still must be implemented by the caller for now). Reviewed by: alc, kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D32033cgit |
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| 84c39222 | markj | Oct. 20, 2021, 1:22 a.m. | Convert consumers to vm_page_alloc_noobj_contig()
Remove now-unneeded page zeroing. No functional change intended. Reviewed by: alc, hselasky, kib MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D32006cgit |
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| 92db9f3b | markj | Oct. 20, 2021, 1:22 a.m. | Introduce vm_page_alloc_noobj_contig()
This is the same as vm_page_alloc_noobj(), but allocates physically contiguous runs of memory. For now it is implemented in terms of vm_page_alloc_contig(), with the difference that vm_page_alloc_noobj_contig() implements VM_ALLOC_ZERO by zeroing the page. Reviewed by: alc, kib MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D32005cgit |
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| a4667e09 | markj | Oct. 20, 2021, 1:22 a.m. | Convert vm_page_alloc() callers to use vm_page_alloc_noobj().
Remove page zeroing code from consumers and stop specifying VM_ALLOC_NOOBJ. In a few places, also convert an allocation loop to simply use VM_ALLOC_WAITOK. Similarly, convert vm_page_alloc_domain() callers. Note that callers are now responsible for assigning the pindex. Reviewed by: alc, hselasky, kib MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D31986cgit |
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| b498f71b | markj | Oct. 20, 2021, 1:22 a.m. | vm_page: Add a new page allocator interface for unnamed pages
The diff adds vm_page_alloc_noobj() and vm_page_alloc_noobj_domain(). These mostly correspond to vm_page_alloc() and vm_page_alloc_domain() when no VM object is specified, with the exception that they handle VM_ALLOC_ZERO by zeroing the page, rather than by preserving PG_ZERO. This simplifies callers and will permit simplification of the vm_page_alloc_domain() definition. Since the new allocator variant is similar to vm_page_alloc_freelist(), implement both of them using a common backend allocator function. No functional change intended. Reviewed by: alc, kib MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D31985cgit |
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| a23e6a10 | markj | Oct. 20, 2021, 1:22 a.m. | vm_page: Move vm_page_alloc_check() to after page allocator definitions
This way all of the vm_page_alloc_*() allocator functions are grouped together. MFC after: 1 week Sponsored by: The FreeBSD Foundationcgit |
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| 1c99af1e | emaste | Oct. 20, 2021, 12:10 a.m. | libssh: Rearrange Makefile SRCS to match upstream Makefile.in
SRCS entries are kept in the same order and with the same line breaks as upstream, to make comparison easier. Reported by: descgit |
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| c7f38a2d | kib | Oct. 19, 2021, 9:25 p.m. | procctl: stop using SA_*LOCKED, define local enum
Using SA_*LOCKED constants breaks !INVARIANT builds Reported by: cy Sponsored by: The FreeBSD Foundation MFC after: 1 weekcgit |
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| 49db81aa | kib | Oct. 19, 2021, 8:04 p.m. | kern_procctl: skip zombies for process group operations
When iterating over the process group members, skip zombies same as it is done by pfind() for single-process operation. Reviewed by: emaste, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D32513cgit |
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| 3692877a | kib | Oct. 19, 2021, 8:04 p.m. | kern_procctl.c: use td->td_proc instead of curproc
Suggested by: markj Reviewed by: emaste, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D32513cgit |
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| f5bb6e5a | kib | Oct. 19, 2021, 8:04 p.m. | procctl: actually require debug privileges over target
for state control over TRACE, TRAPCAP, ASLR, PROTMAX, STACKGAP, NO_NEWPRIVS, and WXMAP. Reported by: emaste Reviewed by: emaste, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D32513cgit |
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| 1c4dbee5 | kib | Oct. 19, 2021, 8:04 p.m. | procctl: make it possible to specify that some operations require debug privilege over the target
Reviewed by: emaste, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D32513cgit |
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| 32026f59 | kib | Oct. 19, 2021, 8:04 p.m. | sys_procctl(): zero the data buffer once, on syscall entry
and remove zeroing of it from specific functions. This way it is guaranteed that we do not leak kernel data. Suggested by: markj Reviewed by: emaste, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D32513cgit |