Fix that process will remain even if signal is received between PPD
registration and release_handler registration.
Refs: #1201
Fujitsu: POSTK_DEBUG_TEMP_FIX_64
Change-Id: I571781963578df8cedb327f19298f595cfb137a3
arch perf counters are placed at start, so offset all
other counters (because placing arch perf counters at the end
wouldn't have been intrusive enough?)
Change-Id: Ifab1047872384927d9cfa0a0212327ee73545c29
Fujitsu: POSTK_DEBUG_ARCH_DEP_86
ihk_ikc_release_packet takes the channel and puts the packet into its
free-list. This fix makes it easy and safe to identify the proper
channel.
Change-Id: I5584b1e8a3ed675c2f9d68f0b5ed331b909197f6
Fujitsu: POSTK_DEBUG_TEMP_FIX_89
Fixed an issue where errors generated in arch_cpu_read_write_register()
are not transmitted to the caller.
Change-Id: I05d7d872eab834918220cf18f628aee37208a156
Fujitsu: POSTK_DEBUG_TEMP_FIX_94
it was meant for 3.10 kernels, so the regular < 4.0.0 check
will work for el7 and older kernels as well
Change-Id: I807f030f6303c9c3d17b0d80de55c256a3479486
In addition to that, mcctrl_perf_set is modified so that it updates
usrdata->perf_event_num with number of registered events.
Change-Id: I3f343176f55b06d3baab0b0fe34e240f39706cf6
Fujitsu: POSTK_DEBUG_TEMP_FIX_80
This includes the following fix:
send_syscall, do_syscall: remove argument pid
Fujitsu: POSTK_TEMP_FIX_26
Refs: #1165
Change-Id: I702362c07a28f507a5e43dd751949aefa24bc8c0
Defining C structures for the following objects:
(1) Remote and local context
(2) Stack of system call arguments / return values
Change-Id: Iafbb6c795bd765e3c78c54a255d8a1e4d4536288
(1) Add --enable-uti option. The binary-patch library is
preloaded with this option.
(2) Binary-patching is done by syscall_intercept developed by Intel
This commit includes the following fixes:
(1) Fix do_exit() and terminate() handling
(2) Fix timing of killing mcexec threads when McKernel thread calls terminate()
Change-Id: Iad885e1e5540ed79f0808debd372463e3b8fecea
It is accompanied by the following fixes:
(1) Fix put ppd locations in mcexec_wait_syscall()
(2) Move put ptd to end of mcexec_terminate_thread_unsafe() and mcexec_ret_syscall()
(3) Add debug messages for ptd add/get/put
(4) Fix ptd-add/get/put matching in mcexec_wait_syscall()
* Skip put when woken-up from wait_event_interruptible() by signal
Change-Id: Ib9be3f5e62a7a370197cb36c9fa7c4d79f44c314
(1) Masquerade clv
(2) Fix timeout
(3) Let mcexec thread with the same tid as McKernel thread migrating
to Linux handles the migration request
(4) Call create_tracer() before creating proxy related objects
Change-Id: I6b2689b70db49827f10aa7d5a4c581aa81319b55
the pagers are all destroyed when linux thinks there is no process left,
but there is no synchronisation with mcexec on that and some new process
might have spawned and started using these pagers in the meantime,
leading to weird crashes because an invalid pager was used.
The reason we're cleaning up pagers when no process is left is that
mcctrl does not handle pager_req_release is the linux-side process got
killed or died before the mckernel one for some reason, so:
- move pager_req_release to a new __do_in_kernel_irq_syscall() helper
- have free_all_process_memory_range not set MF_HOST_RELEASED on the
memobj
- just in case, clean up everything like before on mcctrl shutdown
instead of when no process is left.
Change-Id: I53b8b9b81b1e5b807593850af17b5ea5e8471174
Refs: #1154
Report timeout when McKernel doesn't respond to prevent the caller
from waiting forever.
Refs: #1167
Change-Id: I8bd87e43aafffdd0952198224e44195af4368883
struct sched_param is defined differently since headers changed in
linux ae7e81c07 ("sched/headers...")
Change-Id: I22af79bf3d9df69d09903b2830d99426309cf911
Instead of parsing System.map, use kallsyms_lookup_name() to
get unexported symbols addresses at module loading time.
This lets mckernel work with kaslr enabled (it gets enabled by
default from el7.5 onwards)
Change-Id: Ie4349fc1145ebce44f37f1f40c16f9d75584074d
See linux's commit 0ee931c4 ("mm: treewide: remove GFP_TEMPORARY
allocation flag") for a long explanation, but basically that flag
"is just cargo cult" and should be removed
Change-Id: I2147cd65b6b9ec509a72e11cc3abf1fe1561c10b
While we are here, also optimize code a bit: perf_desc does not need
to be allocated for every cpu; and fix coding style.
Change-Id: Iad19fed08205d38594fd3f1b7ddf2b19a9cf0d9d
Many ikc messages expecting a reply use wait_event_interruptible
incorrectly, freeing memory that could still be used on the other side.
This commit implements a generic ikc send and wait helper that helps
with memory management and ownership properly:
- if the message succeeds and a reply comes back normally, the memory
is freed by the caller as usual
- if the wait fails (signal before the reply comes or timeout) then the
memory is set as owner by ikc and will be free when the reply comes back
later
- if the reply never comes, the memory is freed at shutdown when
destroying ikc channels
Refs: #1076
Change-Id: I7f348d9029a6ad56ba9a50c836105ec39fa14943
