On 6/14/2021 11:33 PM, Christoph Hellwig wrote:
On Mon, Jun 14, 2021 at 10:04:06PM +0800, Tianyu Lan wrote:
The pages in the hv_page_buffer array here are in the kernel linear
mapping. The packet sent to host will contain an array which contains
transaction data. In the isolation VM, data in
On Mon, Jun 14, 2021 at 10:04:06PM +0800, Tianyu Lan wrote:
> The pages in the hv_page_buffer array here are in the kernel linear
> mapping. The packet sent to host will contain an array which contains
> transaction data. In the isolation VM, data in the these pages needs to be
> copied to
On 6/14/2021 3:09 PM, Christoph Hellwig wrote:
On Mon, Jun 07, 2021 at 11:21:20PM +0800, Tianyu Lan wrote:
dma_map_single can only be used on page baked memory, and if this is
using page backed memory you wouldn't need to do thee phys_to_virt
tricks. Can someone explain the mess here in more
On Mon, Jun 07, 2021 at 11:21:20PM +0800, Tianyu Lan wrote:
>> dma_map_single can only be used on page baked memory, and if this is
>> using page backed memory you wouldn't need to do thee phys_to_virt
>> tricks. Can someone explain the mess here in more detail?
>
> Sorry. Could you elaborate the
Tianyu Lan writes:
> From: Tianyu Lan
>
> In Isolation VM, all shared memory with host needs to mark visible
> to host via hvcall. vmbus_establish_gpadl() has already done it for
> netvsc rx/tx ring buffer. The page buffer used by vmbus_sendpacket_
> pagebuffer() still need to handle. Use DMA
On 6/7/2021 2:50 PM, Christoph Hellwig wrote:
On Sun, May 30, 2021 at 11:06:27AM -0400, Tianyu Lan wrote:
+ if (hv_isolation_type_snp()) {
+ pfns = kcalloc(buf_size / HV_HYP_PAGE_SIZE, sizeof(unsigned
long),
+ GFP_KERNEL);
+ for
On Sun, May 30, 2021 at 11:06:27AM -0400, Tianyu Lan wrote:
> + if (hv_isolation_type_snp()) {
> + pfns = kcalloc(buf_size / HV_HYP_PAGE_SIZE, sizeof(unsigned
> long),
> +GFP_KERNEL);
> + for (i = 0; i < buf_size / HV_HYP_PAGE_SIZE; i++)
> +
From: Tianyu Lan
In Isolation VM, all shared memory with host needs to mark visible
to host via hvcall. vmbus_establish_gpadl() has already done it for
netvsc rx/tx ring buffer. The page buffer used by vmbus_sendpacket_
pagebuffer() still need to handle. Use DMA API to map/umap these
memory
