From: Jan Kiszka <jan.kis...@siemens.com> 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.kis...@siemens.com> --- This must be applied before "Drop MCE MSRs write back restrictions" (I don't want to resend the whole series for this). vl.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/vl.c b/vl.c index 768dbf4..20e5dda 100644 --- a/vl.c +++ b/vl.c @@ -1422,6 +1422,7 @@ static void main_loop(void) } if (qemu_reset_requested()) { pause_all_vcpus(); + cpu_synchronize_all_states(); qemu_system_reset(); resume_all_vcpus(); }