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Synchronize VCPU states before reset

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This is required to support keeping VCPU states across a system reset.
If we do not read the current state before the reset,
cpu_synchronize_all_post_reset may write back incorrect state
information.

The first user of this will be MCE MSR synchronization which currently
works around the missing cpu_synchronize_all_states.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Jan Kiszka 2011-03-02 08:56:11 +01:00 • committed by Marcelo Tosatti
parent 747461c76b
commit a7ada1510c
1 changed files with 1 additions and 0 deletions
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vl.c
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@ -1450,6 +1450,7 @@ static void main_loop(void)
}
if (qemu_reset_requested()) {
pause_all_vcpus();
cpu_synchronize_all_states();
qemu_system_reset();
resume_all_vcpus();
}