gibbs a9c07a6f67 Add support for suspend/resume/migration operations when running as a ...

Xen PVHVM guest.

Submitted by:	Roger Pau Monné
Sponsored by:	Citrix Systems R&D
Reviewed by:	gibbs
Approved by:	re (blanket Xen)
MFC after:	2 weeks

sys/amd64/amd64/mp_machdep.c:
sys/i386/i386/mp_machdep.c:
	- Make sure that are no MMU related IPIs pending on migration.
	- Reset pending IPI_BITMAP on resume.
	- Init vcpu_info on resume.

sys/amd64/include/intr_machdep.h:
sys/i386/include/intr_machdep.h:
sys/x86/acpica/acpi_wakeup.c:
sys/x86/x86/intr_machdep.c:
sys/x86/isa/atpic.c:
sys/x86/x86/io_apic.c:
sys/x86/x86/local_apic.c:
	- Add a "suspend_cancelled" parameter to pic_resume().  For the
	  Xen PIC, restoration of interrupt services differs between
	  the aborted suspend and normal resume cases, so we must provide
	  this information.

sys/dev/acpica/acpi_timer.c:
sys/dev/xen/timer/timer.c:
sys/timetc.h:
	- Don't swap out "suspend safe" timers across a suspend/resume
	  cycle.  This includes the Xen PV and ACPI timers.

sys/dev/xen/control/control.c:
	- Perform proper suspend/resume process for PVHVM:
		- Suspend all APs before going into suspension, this allows us
		  to reset the vcpu_info on resume for each AP.
		- Reset shared info page and callback on resume.

sys/dev/xen/timer/timer.c:
	- Implement suspend/resume support for the PV timer. Since FreeBSD
	  doesn't perform a per-cpu resume of the timer, we need to call
	  smp_rendezvous in order to correctly resume the timer on each CPU.

sys/dev/xen/xenpci/xenpci.c:
	- Don't reset the PCI interrupt on each suspend/resume.

sys/kern/subr_smp.c:
	- When suspending a PVHVM domain make sure there are no MMU IPIs
	  in-flight, or we will get a lockup on resume due to the fact that
	  pending event channels are not carried over on migration.
	- Implement a generic version of restart_cpus that can be used by
	  suspended and stopped cpus.

sys/x86/xen/hvm.c:
	- Implement resume support for the hypercall page and shared info.
	- Clear vcpu_info so it can be reset by APs when resuming from
	  suspension.

sys/dev/xen/xenpci/xenpci.c:
sys/x86/xen/hvm.c:
sys/x86/xen/xen_intr.c:
	- Support UP kernel configurations.

sys/x86/xen/xen_intr.c:
	- Properly rebind per-cpus VIRQs and IPIs on resume.

2013-09-20 05:06:03 +00:00

..

bus_if.m

Add a BUS_CHILD_DELETED() method that a bus can hook to allow it to cleanup

2012-08-21 18:13:09 +00:00

capabilities.conf

Sort properly.

2013-09-07 19:16:02 +00:00

clock_if.m

…

cpufreq_if.m

…

device_if.m

Revert r239178 and implement two new functions, namely

2012-08-15 15:42:57 +00:00

dtio_kdtrace.c

Change the module name for the I/O provider to "kernel" from

2012-09-25 19:16:28 +00:00

genassym.sh

…

imgact_aout.c

Cosmetics: define FREEBSD32_MINUSER and AOUT32_MINUSER for struct

2012-07-22 13:41:45 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use

2013-09-09 18:11:59 +00:00

imgact_gzip.c

Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use

2013-09-09 18:11:59 +00:00

imgact_shell.c

…

inflate.c

…

init_main.c

Extend the support for exempting processes from being killed when swap is

2013-09-19 18:53:42 +00:00

init_sysent.c

Regen.

2013-09-19 18:56:00 +00:00

kern_acct.c

acct: create a special plimit object and set it for exiting processes

2013-06-30 19:08:06 +00:00

kern_alq.c

The fix committed in r250951 replaced the reported panic with a deadlock... gold

2013-06-17 09:49:07 +00:00

kern_clock.c

Correct a bug that prevented deadlkres from (almost) ever firing.

2013-06-28 15:55:30 +00:00

kern_clocksource.c

- Make callout(9) tickless, relying on eventtimers(4) as backend for

2013-03-04 11:09:56 +00:00

kern_condvar.c

MFcalloutng:

2013-03-04 12:20:48 +00:00

kern_conf.c

Reject spaces and double quotation marks in device names. devctl(4)

2012-12-22 13:33:28 +00:00

kern_cons.c

cngetc: use cpu_spinwait to ease the cncheckc loop a tiny bit

2012-10-06 19:50:23 +00:00

kern_context.c

In order to maximize the re-usability of kernel code in user space this

2011-09-16 13:58:51 +00:00

kern_cpu.c

Revert r175376 and tune cpufreq(4) frequency comparison logic instead.

2012-03-10 18:56:16 +00:00

kern_cpuset.c

Several improvements to rmlock(9). Many of these are based on patches

2013-06-25 18:44:15 +00:00

kern_ctf.c

Remove the support for using non-mpsafe filesystem modules.

2012-10-22 17:50:54 +00:00

kern_descrip.c

Handle cases where capability rights are not provided.

2013-09-05 11:58:12 +00:00

kern_dtrace.c

Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.

2011-11-07 06:44:47 +00:00

kern_environment.c

r249408 and r249436 cause a NULL pointer dereference on the CUBIEBOARD

2013-04-16 22:09:08 +00:00

kern_et.c

Fix incorrect assertion that caused panic when periodic-only timers used.

2013-03-13 06:42:01 +00:00

kern_event.c

Revert r255672, it has some serious flaws, leaking file references etc.

2013-09-18 18:48:33 +00:00

kern_exec.c

Change the cap_rights_t type from uint64_t to a structure that we can extend

2013-09-05 00:09:56 +00:00

kern_exit.c

Specify SDT probe argument types in the probe definition itself rather than

2013-08-15 04:08:55 +00:00

kern_fail.c

Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.

2011-11-07 06:44:47 +00:00

kern_ffclock.c

Revise the sysctl handling code and restructure the hierarchy of sysctls

2011-12-01 07:19:13 +00:00

kern_fork.c

Extend the support for exempting processes from being killed when swap is

2013-09-19 18:53:42 +00:00

kern_gzio.c

Remove the support for using non-mpsafe filesystem modules.

2012-10-22 17:50:54 +00:00

kern_hhook.c

Move hhook's per-vnet initialisation to an earlier SYSINIT SI_SUB stage to

2013-06-15 10:08:34 +00:00

kern_idle.c

MFC

2011-05-31 21:22:44 +00:00

kern_intr.c

Snapshot; Do some running repairs on entropy harvesting. More needs to follow.

2013-08-26 18:35:21 +00:00

kern_jail.c

Keep PRIV_KMEM_READ permitted inside jails as it is on the outside.

2013-09-06 17:32:29 +00:00

kern_khelp.c

Cleanup and simplification in khelp_{register|deregister}_helper(). No

2013-06-15 06:45:17 +00:00

kern_kthread.c

Do not use potentially stale thread in kthread_add()

2013-08-17 17:02:43 +00:00

kern_ktr.c

ktr: correctly handle possible wrap-around in the boot buffer

2013-02-08 07:29:07 +00:00

kern_ktrace.c

Fix panic in ktrcapfail() when no capability rights are passed.

2013-09-18 19:26:08 +00:00

kern_linker.c

Rename the kld_unload event handler to kld_unload_try, and add a new

2013-08-24 21:13:38 +00:00

kern_lock.c

A few mostly cosmetic nits to aid in debugging:

2013-06-25 20:23:08 +00:00

kern_lockf.c

Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.

2011-11-07 06:44:47 +00:00

kern_lockstat.c

…

kern_loginclass.c

In order to maximize the re-usability of kernel code in user space this

2011-09-16 13:58:51 +00:00

kern_malloc.c

- Disable quantum caches on the kmem_arena. This can make fragmentation

2013-08-13 22:41:24 +00:00

kern_mbuf.c

Fixing a small typo.

2013-09-05 18:18:23 +00:00

kern_mib.c

fix some fat-fingering in r246246

2013-02-02 14:19:50 +00:00

kern_module.c

Fix a typo.

2012-08-22 20:01:57 +00:00

kern_mtxpool.c

…

kern_mutex.c

Give mutex(9) the ability to recurse on a per-instance basis.

2013-08-09 11:24:29 +00:00

kern_ntptime.c

rename scheduler->swapper and SI_SUB_RUN_SCHEDULER->SI_SUB_LAST

2013-07-24 09:45:31 +00:00

kern_osd.c

…

kern_physio.c

Fix some issues in change 254760 pointed out by Bruce Evans:

2013-08-29 16:41:40 +00:00

kern_pmc.c

Add software PMC support.

2012-03-28 20:58:30 +00:00

kern_poll.c

Remove unsigned comparison < 0

2013-08-07 07:22:56 +00:00

kern_priv.c

Make the comments a little more clear about PRIV_KMEM_*, explicitly

2013-07-06 00:10:52 +00:00

kern_proc.c

Extend the support for exempting processes from being killed when swap is

2013-09-19 18:53:42 +00:00

kern_prot.c

Style fix

2012-11-14 10:33:12 +00:00

kern_racct.c

Accessing td_state requires thread lock to be held.

2013-03-14 23:20:18 +00:00

kern_rangelock.c

Change the queue of locks in kern_rangelock.c from holding lock requests in

2013-08-15 20:19:17 +00:00

kern_rctl.c

Add CPU percentage limit enforcement to RCTL. The resouce name is "pcpu".

2012-10-26 16:01:08 +00:00

kern_resource.c

Call sched_prio() to immediately change the priority of the thread in

2013-03-07 02:53:29 +00:00

kern_rmlock.c

Fix build with INVARIANT_SUPPORT enabled but not INVARIANTS.

2013-07-08 21:17:20 +00:00

kern_rwlock.c

A few mostly cosmetic nits to aid in debugging:

2013-06-25 20:23:08 +00:00

kern_sdt.c

FreeBSD's DTrace implementation has a few problems with respect to handling

2013-08-13 03:10:39 +00:00

kern_sema.c

…

kern_sharedpage.c

Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9).

2013-08-22 07:39:53 +00:00

kern_shutdown.c

Switch vm_object lock to be a rwlock.

2013-02-20 10:38:34 +00:00

kern_sig.c

Change the cap_rights_t type from uint64_t to a structure that we can extend

2013-09-05 00:09:56 +00:00

kern_switch.c

Add a comment on why inlining critical_enter() may not be a good idea

2012-12-09 04:54:22 +00:00

kern_sx.c

A few mostly cosmetic nits to aid in debugging:

2013-06-25 20:23:08 +00:00

kern_synch.c

Simplify pause_sbt() logic. Don't call DELAY() if remainder is less

2013-08-30 10:39:56 +00:00

kern_syscalls.c

…

kern_sysctl.c

Add a helpful message that can help point to why a sysctl tree removal failed

2013-08-09 01:04:44 +00:00

kern_tc.c

- Make callout(9) tickless, relying on eventtimers(4) as backend for

2013-03-04 11:09:56 +00:00

kern_thr.c

Stop treating td_sigmask specially for the purposes of new thread

2012-05-26 20:03:47 +00:00

kern_thread.c

Another NFS SIGSTOP related fix: Ignore thread suspend requests due to

2013-03-21 14:06:27 +00:00

kern_time.c

Implement compat32 wrappers for the ktimer_* syscalls.

2013-07-21 19:43:52 +00:00

kern_timeout.c

Specify SDT probe argument types in the probe definition itself rather than

2013-08-15 04:08:55 +00:00

kern_umtx.c

Fix two issues with the spin loops in the umtx(2) implementation.

2013-06-13 09:33:22 +00:00

kern_uuid.c

Further restrict the MAC addresses that we use for UUID generation

2013-07-24 18:13:43 +00:00

kern_xxx.c

…

ksched.c

sched_rr_interval() seems always returned period in hz ticks, but same

2012-08-10 18:19:57 +00:00

link_elf_obj.c

Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use

2013-09-09 18:11:59 +00:00

link_elf.c

Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use

2013-09-09 18:11:59 +00:00

linker_if.m

…

Make.tags.inc

- Trim an unused and bogus Makefile for mount_smbfs.

2013-06-28 21:00:08 +00:00

Makefile

…

makesyscalls.sh

Fix the type of the idtype argument to wait6() in syscalls.master.

2013-09-12 18:01:13 +00:00

md4c.c

…

md5c.c

…

p1003_1b.c

In order to maximize the re-usability of kernel code in user space this

2011-09-16 13:58:51 +00:00

posix4_mib.c

Define two new sysctl node flags: CTLFLAG_CAPRD and CTLFLAG_CAPRW, which

2011-07-17 23:05:24 +00:00

sched_4bsd.c

rename scheduler->swapper and SI_SUB_RUN_SCHEDULER->SI_SUB_LAST

2013-07-24 09:45:31 +00:00

sched_ule.c

Micro-optimize cpu_search(), allowing compiler to use more efficient inline

2013-09-07 15:16:30 +00:00

serdev_if.m

…

stack_protector.c

…

subr_acl_nfs4.c

Fix bug where NFSv4 ACL enforcement code wouldn't unconditionally

2012-04-17 14:54:00 +00:00

subr_acl_posix1e.c

Add module load/unload stubs.

2012-03-13 20:27:48 +00:00

subr_autoconf.c

…

subr_blist.c

Remove reference to the rlist code from comments, and fix a typo visible

2013-02-05 20:08:33 +00:00

subr_bufring.c

…

subr_bus_dma.c

Move an assertion to the right spot; only bus_dmamap_load_mbuf(9)

2013-06-01 11:42:47 +00:00

subr_bus.c

Allow drivers to return BUS_PROBE_NOWILDCARD from their attach routine to

2013-08-08 19:30:49 +00:00

subr_busdma_bufalloc.c

Replace kernel virtual address space allocation with vmem. This provides

2013-08-07 06:21:20 +00:00

subr_capability.c

Fix panic in cap_rights_is_valid() when invalid rights are provided -

2013-09-07 19:03:16 +00:00

subr_clock.c

…

subr_counter.c

Revert r249590 and in case if mp_ncpus isn't initialized use MAXCPU. This

2013-07-23 11:16:40 +00:00

subr_devstat.c

Fix build for kernels with dtrace hooks.

2012-07-11 18:50:50 +00:00

subr_disk.c

…

subr_dummy_vdso_tc.c

Implement mechanism to export some kernel timekeeping data to

2012-06-22 07:06:40 +00:00

subr_eventhandler.c

…

subr_fattime.c

…

subr_firmware.c

Correct sizeof usage

2012-06-25 05:41:16 +00:00

subr_hash.c

Convert panic()s to KASSERT()s. This is an optimisation for

2012-01-23 16:31:46 +00:00

subr_hints.c

Style fixes.

2012-09-04 23:16:55 +00:00

subr_kdb.c

- Extend the KDB interface to add a per-debugger callback to print a

2012-04-12 17:43:59 +00:00

subr_kobj.c

As it turns out, r186347 actually is insufficient to avoid the use of the

2011-11-15 20:11:03 +00:00

subr_lock.c

Several improvements to rmlock(9). Many of these are based on patches

2013-06-25 18:44:15 +00:00

subr_log.c

MFcalloutng (r244255 by mav, with minor changes):

2013-03-04 16:07:55 +00:00

subr_mbpool.c

Give (*ext_free) an int return value allowing for very sophisticated

2013-08-25 10:57:09 +00:00

subr_mchain.c

Mechanically substitute flags from historic mbuf allocator with

2012-12-05 08:04:20 +00:00

subr_module.c

…

subr_msgbuf.c

- Clean up timestamps in msgbuf code. The timestamps should now be

2012-03-19 00:36:32 +00:00

subr_param.c

Implement the concept of the unmapped VMIO buffers, i.e. buffers which

2013-03-19 14:13:12 +00:00

subr_pcpu.c

Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.

2011-11-07 06:44:47 +00:00

subr_pctrie.c

- Add a new general purpose path-compressed radix trie which can be used

2013-05-12 04:05:01 +00:00

subr_power.c

…

subr_prf.c

Reduce the scope of the proctree_lock. If several processes cause

2013-09-13 06:39:10 +00:00

subr_prof.c

Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.

2011-11-07 15:43:11 +00:00

subr_rman.c

Unlock in the error path to prevent a lock leak.

2012-05-31 17:27:05 +00:00

subr_rtc.c

Core structure and functions to support a feed-forward clock within the kernel.

2011-11-19 14:10:16 +00:00

subr_sbuf.c

A library function shall not set errno to 0.

2013-05-16 18:13:10 +00:00

subr_scanf.c

Xen netback driver rewrite.

2012-01-26 16:35:09 +00:00

subr_sglist.c

…

subr_sleepqueue.c

Partially revert r195702. Deferring stops is now implemented via a set of

2013-03-18 17:23:58 +00:00

subr_smp.c

Add support for suspend/resume/migration operations when running as a

2013-09-20 05:06:03 +00:00

subr_stack.c

Constify stack argument for functions that don't modify it.

2011-11-16 19:06:55 +00:00

subr_syscall.c

Fix build on ARM (and probably other platforms)

2012-12-28 06:52:53 +00:00

subr_taskqueue.c

MFprojects/camlock r254460:

2013-08-24 14:41:49 +00:00

subr_trap.c

Partially revert r195702. Deferring stops is now implemented via a set of

2013-03-18 17:23:58 +00:00

subr_turnstile.c

Update the comment: we do show the backtrace of misbehaving thread.

2013-02-17 21:37:32 +00:00

subr_uio.c

Remove zero-copy sockets code. It only worked for anonymous memory,

2013-09-16 06:25:54 +00:00

subr_unit.c

Move the definition of the struct unrhdr into a separate header file,

2013-08-30 07:37:45 +00:00

subr_vmem.c

Added sysctl to turn off calls to vmem_check().

2013-08-20 11:06:56 +00:00

subr_witness.c

Trim a couple of panic messages.

2013-09-04 11:52:28 +00:00

sys_capability.c

This looks like a typo that breaks the build. Yell at me if this isn't the

2013-09-05 03:36:57 +00:00

sys_generic.c

Restore builds on architectures that don't support CAPABILITIES (mips).

2013-09-05 03:46:44 +00:00

sys_pipe.c

Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use

2013-09-09 18:11:59 +00:00

sys_procdesc.c

Change the cap_rights_t type from uint64_t to a structure that we can extend

2013-09-05 00:09:56 +00:00

sys_process.c

Extend the support for exempting processes from being killed when swap is

2013-09-19 18:53:42 +00:00

sys_socket.c

Make sendfile() a method in the struct fileops. Currently only

2013-08-15 07:54:31 +00:00

syscalls.c

Regen.

2013-09-19 18:56:00 +00:00

syscalls.master

Extend the support for exempting processes from being killed when swap is

2013-09-19 18:53:42 +00:00

systrace_args.c

Regen.

2013-09-19 18:56:00 +00:00

sysv_ipc.c

…

sysv_msg.c

In order to maximize the re-usability of kernel code in user space this

2011-09-16 13:58:51 +00:00

sysv_sem.c

In order to maximize the re-usability of kernel code in user space this

2011-09-16 13:58:51 +00:00

sysv_shm.c

Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use

2013-09-09 18:11:59 +00:00

tty_compat.c

…

tty_info.c

Fix whitespace inconsistencies in TTY code.

2012-02-06 18:15:46 +00:00

tty_inq.c

Use strchr() and strrchr().

2012-01-02 12:12:10 +00:00

tty_outq.c

Fix whitespace inconsistencies in the TTY layer and its drivers owned by me.

2011-06-26 18:26:20 +00:00

tty_pts.c

Make sendfile() a method in the struct fileops. Currently only

2013-08-15 07:54:31 +00:00

tty_tty.c

…

tty_ttydisc.c

Correct SIGTTIN handling.

2012-10-25 09:05:21 +00:00

tty.c

Change the cap_rights_t type from uint64_t to a structure that we can extend

2013-09-05 00:09:56 +00:00

uipc_accf.c

…

uipc_cow.c

Give (*ext_free) an int return value allowing for very sophisticated

2013-08-25 10:57:09 +00:00

uipc_debug.c

Fix socket buffer timeouts precision using the new sbintime_t KPI instead

2013-09-01 23:34:53 +00:00

uipc_domain.c

- Implement two new system calls:

2013-03-02 21:11:30 +00:00

uipc_mbuf2.c

Mechanically substitute flags from historic mbuf allocator with

2012-12-05 08:04:20 +00:00

uipc_mbuf.c

Pad m_hdr on 32bit architectures to to prevent alignment and padding

2013-08-27 20:52:02 +00:00

uipc_mqueue.c

Fix !CAPABILITIES build.

2013-09-05 10:24:09 +00:00

uipc_sem.c

Change the cap_rights_t type from uint64_t to a structure that we can extend

2013-09-05 00:09:56 +00:00

uipc_shm.c

Implement sendfile(2) for the posix shared memory segment file descriptor,

2013-09-11 06:41:15 +00:00

uipc_sockbuf.c

Fix socket buffer timeouts precision using the new sbintime_t KPI instead

2013-09-01 23:34:53 +00:00

uipc_socket.c

Remove zero-copy sockets code. It only worked for anonymous memory,

2013-09-16 06:25:54 +00:00

uipc_syscalls.c

Fix assertion in sendfile_readpage() to assert only the validity

2013-09-17 06:37:21 +00:00

uipc_usrreq.c

Provide pr_ctloutput method for AF_LOCAL/SOCK_SEQPACKET sockets.

2013-09-11 18:22:30 +00:00

vfs_acl.c

Change the cap_rights_t type from uint64_t to a structure that we can extend

2013-09-05 00:09:56 +00:00

vfs_aio.c

The fget() function now takes pointer to cap_rights_t, so change 0 to NULL.

2013-09-05 11:59:23 +00:00

vfs_bio.c

Drain for the xbusy state for two places which potentially do

2013-09-08 17:51:22 +00:00

vfs_cache.c

namecache sdt: freebsd doesn't support structured characters yet

2013-07-09 08:58:34 +00:00

vfs_cluster.c

When allocating a pbuf for the cluster write, do not sleep waiting

2013-08-27 01:31:12 +00:00

vfs_default.c

- Convert the bufobj lock to rwlock.

2013-05-31 00:43:41 +00:00

vfs_export.c

MFC

2013-02-21 21:59:35 +00:00

vfs_extattr.c

Change the cap_rights_t type from uint64_t to a structure that we can extend

2013-09-05 00:09:56 +00:00

vfs_hash.c

Add exported vfs_hash_index() function, which calculates the canonical

2013-01-14 05:41:40 +00:00

vfs_init.c

Revert accidental commit.

2013-06-29 05:05:57 +00:00

vfs_lookup.c

Fix panic in ktrcapfail() when no capability rights are passed.

2013-09-18 19:26:08 +00:00

vfs_mount.c

Forced dismounts of NFS mounts can fail when thread(s) are stuck

2013-09-01 23:02:59 +00:00

vfs_mountroot.c

In r243868, the error message buffer errmsg have been changed from

2013-09-09 05:01:18 +00:00

vfs_subr.c

In r114945 the line 'nmp = TAILQ_NEXT(mp, mnt_list);' was duplicated.

2013-08-17 14:13:45 +00:00

vfs_syscalls.c

Correct the logic broken in my last commit.

2013-09-05 09:36:19 +00:00

vfs_vnops.c

When opening or closing fifo, ensure that the vnode is locked

2013-09-13 06:52:23 +00:00

vnode_if.src

remove vop_lookup_pre and vop_lookup_post

2012-11-22 10:36:10 +00:00