kernel security, bug fix, and enhancement update

[4.18.0-193.el8.OL8]

• Oracle Linux certificates (Alexey Petrenko)
• Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list
  (olkmod_signing_key.pem) [Orabug: 29539237]
• Update x509.genkey [Orabug: 24817676]
  [4.18.0-193.el8]
• [kvm] KVM: PPC: Book3S HV: Use __gfn_to_pfn_memslot in HPT page fault handler
  (Sam Bobroff) [1815491]
• [net] tcp: also NULL skb->dev when copy was needed (Florian Westphal) [1775961
  ]
• [net] tcp: ensure skb->dev is NULL before leaving TCP stack (Florian Westphal)
  [1775961]
  [4.18.0-192.el8]
• [drm] drm/bochs: downgrade pci_request_region failure from error to warning (D
  ave Airlie) [1804735]
• [drm] drm/bochs: deinit bugfix (Dave Airlie) [1804735]
• [fs] gfs2: fix O_EXCL|O_CREAT handling on cold dcache (Andrew Price) [1811787]
• [net] esp: remove the skb from the chain when its enqueued in cryptd_wq (Xin
  Long) [1807909]
• [powerpc] powerpc/nvdimm: set target_node properly (Diego Domingos) [1815038]
  [4.18.0-191.el8]
• [netdrv] net/mlx5e: Dont clear the whole vf config when switching modes (moha
  mad meib) [1814350]
• [fs] fuse: fix stack use after return (Miklos Szeredi) [1814666]
  [4.18.0-190.el8]
• [powerpc] powerpc/pseries: Avoid NULL pointer dereference when drmem is unavai
  lable (David Hildenbrand) [1812874]
• [x86] kvm/svm: PKU not currently supported (Wei Huang) [1789159]
• [x86] Remove the unsupported check for Cooper Lake (David Arcari) [1813921]
  [4.18.0-189.el8]
• [netdrv] net/mlx5e: Show/set Rx network flow classification rules on ul rep (A
  laa Hleihel) [1795156 1794280]
• [netdrv] net/mlx5e: Init ethtool steering for representors (Alaa Hleihel) [179
  5156 1794280]
• [netdrv] net/mlx5e: Show/set Rx flow indir table and RSS hash key on ul rep (A
  laa Hleihel) [1795156 1794280]
• [netdrv] net/mlx5e: Introduce root ft concept for representors netdevs (Alaa H
  leihel) [1795156 1794280]
• [netdrv] net/mlx5: E-Switch, Use vport metadata matching only when mandatory (
  Alaa Hleihel) [1795156]
• [nvme] nvme: log additional message for controller status (David Milburn) [175
  2952]