Victor Sun 8fdea84a63 DM: use acrn_timer api to emulate wdt ...

In the current implementation sigev_notify is configured as
SIGEV_THREAD. When wdt expires an async thread is created and
the registered timer callback is called in the context of this
thread, then the watchdog interrupt emulation would require the
thread to assert intr on this pci dev.

There would be a race condition that when the wdt pci device is
freed in pci device deinit and then a timer expires. In this case
the wdt expired thread will access a freed buffer which would cause
problem such as heap corruption and segment fault.

In this patch we replace timer API with acrn_timer which is based
on timerfd/epoll mechanism to avoid the race condition.

Tracked-On: #1489
Signed-off-by: Victor Sun <victor.sun@intel.com>
Reviewed-by: Jian Jun Chen <jian.jun.chen@intel.com>
Reviewed-by: Minggui Cao <minggui.cao@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>

2018-10-17 14:31:09 +08:00

..

pci

DM: use acrn_timer api to emulate wdt

2018-10-17 14:31:09 +08:00

platform

dm: passthru: fix hardcoded nhlt table length

2018-10-15 13:44:48 +08:00

block_if.c

dm: storage: remove GEOM support

2018-10-15 22:20:04 +08:00

uart_core.c

dm: uart: fix acrn-dm crash issue

2018-10-16 10:24:01 +08:00

usb_core.c

DM USB: change TRB ring processing logic for ISOC transfer

2018-07-20 10:42:34 +08:00