ACK: [Pull Request][mantic/linux-azure] Azure 6.5: Fix TDX regressions

Tue Feb 6 15:59:11 UTC 2024

Acked-by: Ian May <ian.may at canonical.com>


On 2024-02-06 08:20:07 , Tim Gardner wrote:
> BugLink: https://bugs.launchpad.net/bugs/2052519
> 
> SRU Justification
> 
> [Impact]
> 
> TDX support in Microsoft Azure kernels based on 6.5 has regressed from 6.2.
> Microsoft has provided a backport that brings TDX functionality back to that
> of Azure 6.2.
> 
> [Test Case]
> 
> Microsoft tested
> 
> [Regression Potential]
> 
> TDX support has been backported from Linux v6.6, so there could be some
> lingering issues.
> 
> [Other Information]
> 
> SF: #00378027
> 
> ----------------------------------------------------------------------
> The following changes since commit 46d81a550d38e5d944d84ac9ac079d5927475001:
> 
>   UBUNTU: Ubuntu-azure-6.5.0-1012.12 (2024-01-15 14:08:21 -0700)
> 
> are available in the Git repository at:
> 
> 
> git://git.launchpad.net/~timg-tpi/ubuntu/+source/linux-azure/+git/mantic
> mantic-dexuan-tdx-backport-lp2052519
> 
> for you to fetch changes up to 1efe32b05538cccc2e97d55a13ecb59bdde35c13:
> 
>   UBUNTU: SAUCE: clocksource: hyper-v: Use InvariantTSC and enable TSC page
> for a TDX VM without paravisor (2024-02-06 07:18:40 -0700)
> 
> ----------------------------------------------------------------
> Dexuan Cui (17):
>       x86/hyperv: Fix undefined reference to isolation_type_en_snp without
> CONFIG_HYPERV
>       x86/hyperv: Add hv_isolation_type_tdx() to detect TDX guests
>       x86/hyperv: Support hypercalls for fully enlightened TDX guests
>       Drivers: hv: vmbus: Support fully enlightened TDX guests
>       x86/hyperv: Fix serial console interrupts for fully enlightened TDX
> guests
>       Drivers: hv: vmbus: Support >64 VPs for a fully enlightened TDX/SNP VM
>       x86/hyperv: Introduce a global variable hyperv_paravisor_present
>       Drivers: hv: vmbus: Bring the post_msg_page back for TDX VMs with the
> paravisor
>       x86/hyperv: Use TDX GHCI to access some MSRs in a TDX VM with the
> paravisor
>       x86/hyperv: Remove hv_isolation_type_en_snp
>       x86/hyperv: Move the code in ivm.c around to avoid unnecessary ifdef's
>       x86/tdx: Retry partially-completed page conversion hypercalls
>       UBUNTU: SAUCE: x86/EISA: Don't probe EISA bus for a TDX VM (with the
> paravisor) on Hyper-V
>       UBUNTU: SAUCE: Drivers: hv: vmbus: Hardcode MMIO resources in
> vmbus_walk_resources() when necessary
>       UBUNTU: SAUCE: x86/tdx: Support vmalloc() for tdx_enc_status_changed()
>       UBUNTU: SAUCE: x86/coco: Allow CPU online/offline for a TDX VM with
> the paravisor on Hyper-V
>       UBUNTU: SAUCE: clocksource: hyper-v: Use InvariantTSC and enable TSC
> page for a TDX VM without paravisor
> 
> Jiapeng Chong (1):
>       x86/hyperv: Remove duplicate include
> 
> Kirill A. Shutemov (1):
>       x86/mm: Fix memory encryption features advertisement
> 
> Nathan Chancellor (1):
>       x86/hyperv: Add missing 'inline' to hv_snp_boot_ap() stub
> 
> Tianyu Lan (8):
>       x86/hyperv: Add sev-snp enlightened guest static key
>       x86/hyperv: Set Virtual Trust Level in VMBus init message
>       x86/hyperv: Mark Hyper-V vp assist page unencrypted in SEV-SNP
> enlightened guest
>       drivers: hv: Mark percpu hvcall input arg page unencrypted in SEV-SNP
> enlightened guest
>       x86/hyperv: Use vmmcall to implement Hyper-V hypercall in sev-snp
> enlightened guest
>       clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp
> enlightened guest
>       x86/hyperv: Add smp support for SEV-SNP guest
>       x86/hyperv: Add hyperv-specific handling for VMMCALL under SEV-ES
> 
>  arch/x86/coco/core.c               |   6 +++-
>  arch/x86/coco/tdx/tdx.c            |  88
> ++++++++++++++++++++++++++++++++++++++++++++++++--------
>  arch/x86/entry/vdso/vma.c          |  11 +++++--
>  arch/x86/hyperv/hv_apic.c          |  15 ++++++++--
>  arch/x86/hyperv/hv_init.c          | 105
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
>  arch/x86/hyperv/ivm.c              | 264 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------
>  arch/x86/include/asm/coco.h        |   1 +
>  arch/x86/include/asm/hyperv-tlfs.h |  10 ++++++-
>  arch/x86/include/asm/mshyperv.h    |  71
> +++++++++++++++++++++++++++++++++++++++------
>  arch/x86/include/asm/shared/tdx.h  |   2 ++
>  arch/x86/kernel/cpu/mshyperv.c     |  88
> +++++++++++++++++++++++++++++++++++++++++++++++++++-----
>  arch/x86/kernel/eisa.c             |  10 +++++++
>  arch/x86/mm/mem_encrypt.c          |  56
> +++++++++++++++++++-----------------
>  drivers/clocksource/hyperv_timer.c |  16 +++++++++--
>  drivers/hv/connection.c            |  16 ++++++++---
>  drivers/hv/hv.c                    | 131 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---------
>  drivers/hv/hv_common.c             |  48 +++++++++++++++++++++++++++++--
>  drivers/hv/hyperv_vmbus.h          |  11 +++++++
>  drivers/hv/vmbus_drv.c             |  15 ++++++++++
>  include/asm-generic/hyperv-tlfs.h  |   1 +
>  include/asm-generic/mshyperv.h     |  17 ++++++++---
>  include/linux/hyperv.h             |   4 +--
>  22 files changed, 876 insertions(+), 110 deletions(-)
> -- 
> -----------
> Tim Gardner
> Canonical, Inc
> 
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