diff options
Diffstat (limited to 'src/dev/arm/generic_timer.cc')
| -rw-r--r-- | src/dev/arm/generic_timer.cc | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/dev/arm/generic_timer.cc b/src/dev/arm/generic_timer.cc index 1b8d917e9..d33090d74 100644 --- a/src/dev/arm/generic_timer.cc +++ b/src/dev/arm/generic_timer.cc @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013, 2015 ARM Limited + * Copyright (c) 2013, 2015, 2017 ARM Limited * All rights reserved. * * The license below extends only to copyright in the software and shall @@ -307,6 +307,11 @@ GenericTimer::createTimers(unsigned cpus) void GenericTimer::setMiscReg(int reg, unsigned cpu, MiscReg val) { + // This method might have been called from another context if we + // are running in multi-core KVM. Migrate to the SimObject's event + // queue to prevent surprising race conditions. + EventQueue::ScopedMigration migrate(eventQueue()); + CoreTimers &core(getTimers(cpu)); switch (reg) { @@ -399,6 +404,11 @@ GenericTimer::setMiscReg(int reg, unsigned cpu, MiscReg val) MiscReg GenericTimer::readMiscReg(int reg, unsigned cpu) { + // This method might have been called from another context if we + // are running in multi-core KVM. Migrate to the SimObject's event + // queue to prevent surprising race conditions. + EventQueue::ScopedMigration migrate(eventQueue()); + CoreTimers &core(getTimers(cpu)); switch (reg) { |