Merge remote-tracking branch 'remotes/marcel/tags/pvrdma-04-07-2021-v2' into staging

PVRDMA queue

Several CVE fixes for the PVRDMA device.

# gpg: Signature made Sun 04 Jul 2021 20:56:05 BST
# gpg:                using RSA key 36D4C0F0CF2FE46D
# gpg: Good signature from "Marcel Apfelbaum <marcel.apfelbaum@zoho.com>" [marginal]
# gpg:                 aka "Marcel Apfelbaum <marcel@redhat.com>" [marginal]
# gpg:                 aka "Marcel Apfelbaum <marcel.apfelbaum@gmail.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: B1C6 3A57 F92E 08F2 640F  31F5 36D4 C0F0 CF2F E46D

* remotes/marcel/tags/pvrdma-04-07-2021-v2:
  pvrdma: Fix the ring init error flow (CVE-2021-3608)
  pvrdma: Ensure correct input on ring init (CVE-2021-3607)
  hw/rdma: Fix possible mremap overflow in the pvrdma device (CVE-2021-3582)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>