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Mark Johnston e17eca3276 vmm: Avoid embedding cpuset_t ioctl ABIs
Commit 0bda8d3e9f ("vmm: permit some IPIs to be handled by userspace")
embedded cpuset_t into the vmm(4) ioctl ABI.  This was a mistake since
we otherwise have some leeway to change the cpuset_t for the whole
system, but we want to keep the vmm ioctl ABI stable.

Rework IPI reporting to avoid this problem.  Along the way, make VM_RUN
a bit more efficient:
- Split vmexit metadata out of the main VM_RUN structure.  This data is
  only written by the kernel.
- Have userspace pass a cpuset_t pointer and cpusetsize in the VM_RUN
  structure, as is done for cpuset syscalls.
- Have the destination CPU mask for VM_EXITCODE_IPIs live outside the
  vmexit info structure, and make VM_RUN copy it out separately.  Zero
  out any extra bytes in the CPU mask, like cpuset syscalls do.
- Modify the vmexit handler prototype to take a full VM_RUN structure.

PR:		271330
Reviewed by:	corvink, jhb (previous versions)
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D40113
2023-05-23 21:15:59 -04:00
.cirrus-ci Cirrus-CI: add some timing info on pkg install failure 2021-08-04 15:02:00 -04:00
.github MAINTAINERS: Add myself to stand 2023-05-07 22:30:10 -06:00
bin pwd.1: replace /home with /sys in example 2023-05-23 07:21:50 -05:00
cddl dtrace.1: fix mandoc -Tlint 2023-05-23 17:29:19 +03:00
contrib traceroute.8: Document TOS as DiffServ and ECN 2023-05-18 11:17:24 -06:00
crypto openssh: Update configure for DISABLE_LASTLOG 2023-04-20 18:08:16 -04:00
etc arm64: add tests for swp/swpb emulation 2023-05-15 10:42:16 -05:00
gnu Update/fix Makefile.depend for userland 2023-04-18 17:14:23 -07:00
include spdx: Simplify BSD-2-Clause AND BSD-2-Clause 2023-05-12 10:44:04 -06:00
kerberos5 spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
lib vmm: Avoid embedding cpuset_t ioctl ABIs 2023-05-23 21:15:59 -04:00
libexec rc.resume: remove obsolete comment 2023-05-23 18:26:56 +03:00
release release/tools/vmimage.subr: switch zfs dataset from /usr/home to /home 2023-05-23 07:18:58 -05:00
rescue Update/fix Makefile.depend for userland 2023-04-18 17:14:23 -07:00
sbin ifconfig(8): Teach ifconfig to attach and run itself in a jail 2023-05-23 16:39:22 -04:00
secure Update/fix Makefile.depend for userland 2023-04-18 17:14:23 -07:00
share Enable -ftrivial-auto-var-init flags for gcc >= 12 2023-05-23 19:44:45 +02:00
stand libefi: add efi_devpath_next_instance() 2023-05-13 15:16:10 +03:00
sys vmm: Avoid embedding cpuset_t ioctl ABIs 2023-05-23 21:15:59 -04:00
targets local.dirdeps.mk skip N_host_libs for non-FreeBSD host 2023-05-04 11:58:39 -07:00
tests netlink: automatically generate broadcast for IPv4 ifa if not set. 2023-05-20 10:42:08 +00:00
tools git-arc: mention creation of separate reviews in man page 2023-05-22 22:49:32 +03:00
usr.bin ctags: Error out if writing to stdout failed. 2023-05-23 17:31:28 +02:00
usr.sbin vmm: Avoid embedding cpuset_t ioctl ABIs 2023-05-23 21:15:59 -04:00
.arcconfig arcanist: use FreeBSD/git project repository instead of FreeBSD/svn 2022-08-23 14:16:41 +00:00
.arclint
.cirrus.yml Cirrus-CI: switch to -lite LLVM package for native run 2023-05-19 09:56:03 -04:00
.clang-format clang-format: Add bitset loop macros 2021-09-21 12:08:01 -04:00
.git-blame-ignore-revs Add git-blame ignore file 2023-01-23 15:27:25 -05:00
.gitattributes
.gitignore .gitignore: Ignore LSP generated .cache 2023-03-07 10:04:18 -05:00
CONTRIBUTING.md CONTRIBUTING.md: minor changes 2023-05-14 06:51:56 -06:00
COPYRIGHT Happy New Year 2023! 2023-01-01 13:44:43 +08:00
LOCKS
MAINTAINERS MAINTAINERS: Add myself to stand 2023-05-07 22:30:10 -06:00
Makefile Move MACHINE/MACHINE_ARCH handling to sys.machine.mk 2023-05-13 08:15:49 -07:00
Makefile.inc1 Makefile.inc1: use make builtin :ts instead of sed 2023-05-05 08:14:35 -04:00
Makefile.libcompat libcompat: avoid installing include files twice 2022-11-16 19:15:20 -05:00
Makefile.sys.inc
ObsoleteFiles.inc md5: Improve compatibility. 2023-05-08 06:56:22 +00:00
README.md README.md: link to the list of supported platforms 2022-11-01 12:20:55 -03:00
RELNOTES RELNOTES: fix consistency 2023-05-06 23:32:04 -06:00
UPDATING Update UPDATING 2023-05-14 07:05:42 -06:00

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