> -Original Message-
> From: Andrew Cooper
> Sent: 30 November 2018 13:04
> To: Paul Durrant ; xen-devel@lists.xenproject.org
> Cc: Suravee Suthikulpanit ; Brian Woods
> ; Jan Beulich ; Wei Liu
> ; Roger Pau Monne
> Subject: Re: [PATCH 1/2] amd-iommu: add flush iommu_ops
>
> On 30/11/2018
On 30/11/2018 10:45, Paul Durrant wrote:
> diff --git a/xen/drivers/passthrough/amd/iommu_map.c
> b/xen/drivers/passthrough/amd/iommu_map.c
> index 04cb7b3182..c05b042821 100644
> --- a/xen/drivers/passthrough/amd/iommu_map.c
> +++ b/xen/drivers/passthrough/amd/iommu_map.c
> @@ -631,6 +631,54 @@ i
The iommu_ops structure contains two methods for flushing: 'iotlb_flush' and
'iotlb_flush_all'. This patch adds implementations of these for AMD IOMMUs.
The iotlb_flush method takes a base DFN and a (4k) page count, but the
flush needs to be done by page order (i.e. 0, 9 or 18). Because a flush
op
