tree 2711dea500219b6e180da56d8361b6f8e4bf0207
parent a6c3e01bf32e82494fb634801982e31f257f25cc
author Michael S. Tsirkin <mst@redhat.com> 1485200272 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1499258423 +0200

virtio_net: fix PAGE_SIZE > 64k


[ Upstream commit d0fa28f00052391b5df328f502fbbdd4444938b7 ]

I don't have any guests with PAGE_SIZE > 64k but the
code seems to be clearly broken in that case
as PAGE_SIZE / MERGEABLE_BUFFER_ALIGN will need
more than 8 bit and so the code in mergeable_ctx_to_buf_address
does not give us the actual true size.

Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>