Hi，
We hit a bug in our test while run PCMark 10 in a windows 7 VM,
The VM got stuck and the wallclock was hang after several minutes running
PCMark 10 in it.
It is quite easily to reproduce the bug with the upstream KVM and Qemu.
We found that KVM can not inject any RTC irq to VM after it was
On 01/12/2017 08:08, Gonglei (Arei) wrote:
> First write to 0x70, cmos_index = 0xc & 0x7f = 0xc
> CPU 0/KVM-15566 kvm_pio: pio_write at 0x70 size 1 count 1 val 0xc>
> Second write to 0x70, cmos_index = 0x86 & 0x7f = 0x6> CPU 1/KVM-15567
> kvm_pio: pio_write at 0x70 size 1 count 1
Pls see the trace of kvm_pio:
CPU 1/KVM-15567 [003] 209311.762579: kvm_pio: pio_read at 0x70 size
1 count 1 val 0xff
CPU 1/KVM-15567 [003] 209311.762582: kvm_pio: pio_write at 0x70
size 1 count 1 val 0x89
CPU 1/KVM-15567 [003] 209311.762590: kvm_pio: pio_read
