[PATCH for 5.10.y 0/2] backports of ddbd89deb7d3 and aa6f8dcbab47

[Halil Pasic <pasic@xxxxxxxxxxxxx>]

Dear Stable Team,

This is a backport of ddbd89deb7d3 ("swiotlb: fix info leak with
DMA_FROM_DEVICE") and aa6f8dcbab47 ("swiotlb: rework "fix info leak with
DMA_FROM_DEVICE"") to 5.10.y.  

I had to handle some merge conflicts, and at this point we have
swiotlb_tbl_sync_single() as opposed to swiotlb_sync_single_for_device()
so I had to handle that as well.

Halil Pasic (2):
  swiotlb: fix info leak with DMA_FROM_DEVICE
  swiotlb: rework "fix info leak with DMA_FROM_DEVICE"

 kernel/dma/swiotlb.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)


base-commit: 9d7b0ced5647e0df1b200ee29119cb58ff958339
-- 
2.32.0