Re: [Qemu-devel] [PATCH RFC 4/4] intel_iommu: Remove the caching-mode check during flag change

[Auger Eric <eric.auger@redhat.com>]

Hi Peter,

On 8/12/19 9:45 AM, Peter Xu wrote:
> That's never a good place to stop QEMU process... Since now we have
> both the machine done sanity check and also the hotplug handler, we
> can safely remove this to avoid that.
> 
> Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>

Thanks

Eric
> ---
>  hw/i386/intel_iommu.c | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
> index 642dd595ed..93b26b633b 100644
> --- a/hw/i386/intel_iommu.c
> +++ b/hw/i386/intel_iommu.c
> @@ -2932,10 +2932,6 @@ static void vtd_iommu_notify_flag_changed(IOMMUMemoryRegion *iommu,
>      VTDAddressSpace *vtd_as = container_of(iommu, VTDAddressSpace, iommu);
>      IntelIOMMUState *s = vtd_as->iommu_state;
>  
> -    if (!s->caching_mode && new & IOMMU_NOTIFIER_MAP) {
> -        vtd_panic_require_caching_mode();
> -    }
> -
>      /* Update per-address-space notifier flags */
>      vtd_as->notifier_flags = new;
>  
>