GCP TDX Support

[John Cabaj]

[Impact]

* Google requested TDX guest features to be added to GCP kernel.

[Fix]

* 16 clean cherry-picks, 2 backports from upstream
* 11 backports from Intel
* 1 config change to enable support

[Test Case]

* Compile tested
* Boot tested
* Tested internally at various stages of development
* Tested by Google

[Where things could go wrong]

* Majority of patches come from upstream with minimal backporting.
* Some patches sourced from Intel, and differ from upstream counterparts. However, these patches have been extensively tested in other kernels already released.

[Other Info]

* SF #00363309

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-gcp/6.5.0-1015.15 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-mantic-linux-gcp' to 'verification-done-mantic-linux-gcp'. If the problem still exists, change the tag 'verification-needed-mantic-linux-gcp' to 'verification-failed-mantic-linux-gcp'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[John Cabaj (john-cabaj)]

Google tested packages from build PPA.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-gcp - 6.5.0-1015.15

---------------
linux-gcp (6.5.0-1015.15) mantic; urgency=medium

  * mantic/linux-gcp: 6.5.0-1015.15 -proposed tracker (LP: #2052025)

  * Packaging resync (LP: #1786013)
    - debian/dkms-versions -- update from kernel-versions (main/2024.02.05)

  * GCP TDX Support (LP: #2052576)
    - x86/tdx: Mark TSC reliable
    - virt: coco: Add a coco/Makefile and coco/Kconfig
    - configfs-tsm: Introduce a shared ABI for attestation reports
    - virt: sevguest: Prep for kernel internal get_ext_report()
    - mm/slab: Add __free() support for kvfree
    - virt: sevguest: Add TSM_REPORTS support for SNP_GET_EXT_REPORT
    - x86/tdx: Retry partially-completed page conversion hypercalls
    - SAUCE: x86/tdx: Skip saving output regs when SEAMCALL fails with
      VMFailInvalid
    - SAUCE: virt: tdx-guest: Add RTMR update interface
    - SAUCE: x86/tdx: Make macros of TDCALLs consistent with the spec
    - SAUCE: x86/tdx: Rename __tdx_module_call() to __tdcall()
    - SAUCE: x86/tdx: Pass TDCALL/SEAMCALL input/output registers via a structure
    - SAUCE: x86/tdx: Extend TDX_MODULE_CALL to support more TDCALL/SEAMCALL leafs
    - SAUCE: x86/tdx: Make TDX_HYPERCALL asm similar to TDX_MODULE_CALL
    - SAUCE: x86/tdx: Reimplement __tdx_hypercall() using TDX_MODULE_CALL asm
    - SAUCE: x86/tdx: Remove 'struct tdx_hypercall_args'
    - SAUCE: x86/virt/tdx: Wire up basic SEAMCALL functions
    - x86/virt/tdx: Make TDX_MODULE_CALL handle SEAMCALL #UD and #GP
    - x86/tdx: Fix __noreturn build warning around __tdx_hypercall_failed()
    - virt: tdx-guest: Add Quote generation support using TSM_REPORTS
    - x86/kvm: Do not try to disable kvmclock if it was not enabled
    - [Config] gcp: Updates for TDX

  [ Ubuntu: 6.5.0-25.25 ]

  * mantic/linux: 6.5.0-25.25 -proposed tracker (LP: #2052615)
  * Packaging resync (LP: #1786013)
    - debian/dkms-versions -- update from kernel-versions (main/2024.02.05)
  * [SRU][22.04.04]: mpi3mr driver update (LP: #2045233)
    - scsi: mpi3mr: Invoke soft reset upon TSU or event ack time out
    - scsi: mpi3mr: Update MPI Headers to version 3.00.28
    - scsi: mpi3mr: Add support for more than 1MB I/O
    - scsi: mpi3mr: WRITE SAME implementation
    - scsi: mpi3mr: Enhance handling of devices removed after controller reset
    - scsi: mpi3mr: Update driver version to 8.5.0.0.0
    - scsi: mpi3mr: Split off bus_reset function from host_reset
    - scsi: mpi3mr: Add support for SAS5116 PCI IDs
    - scsi: mpi3mr: Add PCI checks where SAS5116 diverges from SAS4116
    - scsi: mpi3mr: Increase maximum number of PHYs to 64 from 32
    - scsi: mpi3mr: Add support for status reply descriptor
    - scsi: mpi3mr: driver version upgrade to 8.5.0.0.50
    - scsi: mpi3mr: Refresh sdev queue depth after controller reset
    - scsi: mpi3mr: Clean up block devices post controller reset
    - scsi: mpi3mr: Block PEL Enable Command on Controller Reset and Unrecoverable
      State
    - scsi: mpi3mr: Fetch correct device dev handle for status reply descriptor
    - scsi: mpi3mr: Support for preallocation of SGL BSG data buffers part-1
    - scsi: mpi3mr: Support for preallocatio...