On 8/20/2021 2:11 AM, Michael Kelley wrote:
}
+
+/*
+ * hv_map_memory - map memory to extra space in the AMD SEV-SNP Isolation VM.
+ */
+void *hv_map_memory(void *addr, unsigned long size)
+{
+ unsigned long *pfns = kcalloc(size / HV_HYP_PAGE_SIZE,
+
On Thu, Aug 19, 2021 at 06:11:30PM +, Michael Kelley wrote:
> This function is manipulating page tables in the guest VM. It is not involved
> in communicating with Hyper-V, or passing PFNs to Hyper-V. The pfn array
> contains guest PFNs, not Hyper-V PFNs. So it should use PAGE_SIZE
> instead
From: Tianyu Lan Sent: Monday, August 9, 2021 10:56 AM
>
> Hyper-V Isolation VM requires bounce buffer support to copy
> data from/to encrypted memory and so enable swiotlb force
> mode to use swiotlb bounce buffer for DMA transaction.
>
> In Isolation VM with AMD SEV, the bounce buffer needs to
From: Tianyu Lan
Hyper-V Isolation VM requires bounce buffer support to copy
data from/to encrypted memory and so enable swiotlb force
mode to use swiotlb bounce buffer for DMA transaction.
In Isolation VM with AMD SEV, the bounce buffer needs to be
accessed via extra address space which is abov
