On 20.11.2020 14:24, Paul Durrant wrote:
> --- a/xen/arch/x86/mm.c
> +++ b/xen/arch/x86/mm.c
> @@ -2489,10 +2489,16 @@ static int cleanup_page_mappings(struct page_info
> *page)
>
> if ( d && unlikely(need_iommu_pt_sync(d)) && is_pv_domain(d) )
> {
> -int rc2 = iomm
From: Paul Durrant
The 'legacy' functions do implicit flushing so amend the callers to do the
appropriate flushing.
Unfortunately, because of the structure of the P2M code, we cannot remove
the per-CPU 'iommu_dont_flush_iotlb' global and the optimization it
facilitates. Checking of this flag is
