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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-02-27 20:01:03 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-03-02 10:57:07 +0100 |
| commit | 21618b3e55ad2c6fede0bffcaea466091811ce59 (patch) | |
| tree | 58dbdbeafd87102b9613b630682bc66c05c7451e /block | |
| parent | 6b49809c597331803ea941eadda813e5bb4e8fe2 (diff) | |
| download | qemu-21618b3e55ad2c6fede0bffcaea466091811ce59.zip qemu-21618b3e55ad2c6fede0bffcaea466091811ce59.tar.gz qemu-21618b3e55ad2c6fede0bffcaea466091811ce59.tar.bz2 | |
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>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions