On Wed, Sep 20, 2023 at 3:02 PM Maxime Coquelin <[email protected]> wrote: > > With Virtio-user, the Virtio descriptor buffer address is the > virtual address of the mbuf's buffer. On 32 bits builds, it is > expected to be 32 bits. > > With Virtio-PCI, the Virtio descriptor buffer address is the > physical address of the mbuf's buffer. On 32 bits builds running > on 64 bits kernel, it is expected to be up to 64 bits. > > This patch introduces a new mask field in virtqueue's struct to > filter our the upper 4 bytes of the address only when necessary. > An optimization is introduced for 64 bits builds to remove the > masking, as the address is always 64 bits wide. > > Fixes: ba55c94a7ebc ("net/virtio: revert forcing IOVA as VA mode for > virtio-user") > Cc: [email protected] > > Reported-by: Sampath Peechu <[email protected]> > Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: David Marchand <[email protected]> -- David Marchand
