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

[John Cabaj]

On 6/26/24 8:52 AM, Thibault Ferrante wrote:
> 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(-)
> 

Acked-by: John Cabaj <john.cabaj at canonical.com>