Re: [Qemu-devel] [PATCH 3/3] apic: always update the in-kernel status after loading

[Avi Kivity]

On 10/30/2012 02:16 PM, Paolo Bonzini wrote:
> The LAPIC is loaded separately from the rest of the VCPU state.  Thus,
> when restoring the CPU the dummy post-reset state is passed to the
> in-kernel APIC.
> 
> This can cause MSI injection to fail if attempted during the restore of
> another device, because the LAPIC believes it's not enabled.
> 
> Signed-off-by: Paolo Bonzini <address@hidden>
> ---
>  hw/apic_common.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/hw/apic_common.c b/hw/apic_common.c
> index f373ba8..1ef52b2 100644
> --- a/hw/apic_common.c
> +++ b/hw/apic_common.c
> @@ -362,6 +362,7 @@ static int apic_dispatch_post_load(void *opaque, int 
> version_id)
>      if (info->post_load) {
>          info->post_load(s);
>      }
> +    cpu_put_apic_state(DEVICE(s));
>      return 0;
>  }

Aren't we still dependent on the order of processing?  If the APIC is
restored after the device, won't we get the same problem?


-- 
error compiling committee.c: too many arguments to function