Re: [Qemu-stable] [Qemu-devel] [PATCH 2/3] spapr/pci: Free MSIs during reset

[Philippe Mathieu-Daudé]

Cc'ing qemu-stable@

On 7/26/19 4:44 PM, Greg Kurz wrote:
> When the machine is reset, the MSI bitmap is cleared but the allocated
> MSIs are not freed. Some operating systems, such as AIX, can detect the
> previous configuration and assert.
> 
> Empty the MSI cache, this performs the needed cleanup.
> 
> Signed-off-by: Greg Kurz <address@hidden>
> ---
>  hw/ppc/spapr_pci.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
> index bc22568bfa71..e45507bf2b53 100644
> --- a/hw/ppc/spapr_pci.c
> +++ b/hw/ppc/spapr_pci.c
> @@ -2078,6 +2078,8 @@ static void spapr_phb_reset(DeviceState *qdev)
>      if (spapr_phb_eeh_available(SPAPR_PCI_HOST_BRIDGE(qdev))) {
>          spapr_phb_vfio_reset(qdev);
>      }
> +
> +    g_hash_table_remove_all(sphb->msi);

It is not clear to my why spapr_phb_unrealize() doesn't require the same
call, but this is not related to this patch.

Reviewed-by: Philippe Mathieu-Daudé <address@hidden>

>  }
>  
>  static Property spapr_phb_properties[] = {
> 
>