Hello:
This patch was applied to netdev/net.git (master)
by Paolo Abeni <pabeni@xxxxxxxxxx>:
On Mon, 30 Jan 2023 19:33:06 -0800 you wrote:
> netvsc_dma_map() and netvsc_dma_unmap() currently check the cp_partial
> flag and adjust the page_count so that pagebuf entries for the RNDIS
> portion of the message are skipped when it has already been copied into
> a send buffer. But this adjustment has already been made by code in
> netvsc_send(). The duplicate adjustment causes some pagebuf entries to
> not be mapped. In a normal VM, this doesn't break anything because the
> mapping doesn’t change the PFN. But in a Confidential VM,
> dma_map_single() does bounce buffering and provides a different PFN.
> Failing to do the mapping causes the wrong PFN to be passed to Hyper-V,
> and various errors ensue.
>
> [...]
Here is the summary with links:
- [net,1/1] hv_netvsc: Fix missed pagebuf entries in netvsc_dma_map/unmap()
https://git.kernel.org/netdev/net/c/99f1c46011cc
You are awesome, thank you!
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