Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

Bugfixes.

# gpg: Signature made Mon 21 Mar 2022 14:57:57 GMT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  hw/i386/amd_iommu: Fix maybe-uninitialized error with GCC 12
  target/i386: kvm: do not access uninitialized variable on older kernels

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

diff --cc hw/i386/amd_iommu.c
Simple merge