[SRU][N:intel][PATCH 0/8] Support Kexec/Kdump

[Thibault Ferrante]

BugLink: https://bugs.launchpad.net/bugs/2070356

[ Impact ]

Kexec is currently disabled on linux-intel as it was incompatible with tdx.
These patch make it possible to use it at the same time than TDX

[ Fix ]

A backport of the kexec enablement for tdx on 6.8 has been done by intel.

[ Test Plan ]

Use kexec to do a kdump on hardware support tdx.
It was tested by Intel and me on dedicated hardware.

[ Where problems could occur ]

Regression on TDX/Kexec related features.


Gerd Hoffmann (2):
  UBUNTU: SAUCE: KVM: x86: Don't advertise guest.MAXPHYADDR as
    host.MAXPHYADDR in CPUID
  UBUNTU: SAUCE: KVM: x86: Advertise max mappable GPA in
    CPUID.0x80000008.GuestPhysBits

Kai Huang (5):
  UBUNTU: SAUCE: x86/kexec: do unconditional WBINVD for bare-metal in
    stop_this_cpu()
  UBUNTU: SAUCE: x86/kexec: do unconditional WBINVD for bare-metal in
    relocate_kernel()
  UBUNTU: SAUCE: x86/kexec: Reset TDX private memory on platforms with
    TDX erratum
  UBUNTU: SAUCE: x86/virt/tdx: Remove the !KEXEC_CORE dependency
  UBUNTU: SAUCE: x86/virt/tdx: Add TDX memory reset notifier to reset
    other private pages

Thibault Ferrante (1):
  UBUNTU: [Config] intel: Enable KEXEC/KDUMP related config

 arch/x86/Kconfig                     |   1 -
 arch/x86/include/asm/kexec.h         |   2 +-
 arch/x86/include/asm/tdx.h           |  16 +++++
 arch/x86/kernel/machine_kexec_64.c   |  29 ++++++--
 arch/x86/kernel/process.c            |  19 +++--
 arch/x86/kernel/relocate_kernel_64.S |  19 +++--
 arch/x86/kvm/cpuid.c                 |  41 ++++++++---
 arch/x86/kvm/mmu.h                   |   2 +
 arch/x86/kvm/mmu/mmu.c               |   5 ++
 arch/x86/virt/vmx/tdx/tdx.c          | 100 +++++++++++++++++++++++++++
 debian.intel/config/annotations      |  30 --------
 11 files changed, 203 insertions(+), 61 deletions(-)

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2.43.0