| commit | 21618b3e55ad2c6fede0bffcaea466091811ce59 | |
| author | Paolo Bonzini <pbonzini@redhat.com> | |
| Fri, 27 Feb 2015 19:01:03 +0000 (27 20:01 +0100) | ||
| committer | Paolo Bonzini <pbonzini@redhat.com> | |
| Mon, 2 Mar 2015 09:57:07 +0000 (2 10:57 +0100) | ||
| tree | 58dbdbeafd87102b9613b630682bc66c05c7451e | treesnapshot (tar.gz zip) |
| parent | 6b49809c597331803ea941eadda813e5bb4e8fe2 | commitdiff |
cpus: be more paranoid in avoiding deadlocks
For good measure, ensure that the following sequence:
thread 1 calls qemu_mutex_lock_iothread
thread 2 calls qemu_mutex_lock_iothread
VCPU thread are created
VCPU thread enters execution loop
results in the VCPU threads letting the other two threads run
and obeying iothread_requesting_mutex even if the VCPUs are
not halted. To do this, check iothread_requesting_mutex
before execution starts.
Tested-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
For good measure, ensure that the following sequence:
thread 1 calls qemu_mutex_lock_iothread
thread 2 calls qemu_mutex_lock_iothread
VCPU thread are created
VCPU thread enters execution loop
results in the VCPU threads letting the other two threads run
and obeying iothread_requesting_mutex even if the VCPUs are
not halted. To do this, check iothread_requesting_mutex
before execution starts.
Tested-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| cpus.c | diffblobblamehistory |