[PATCH v6 0/6] Support TDX guests on Hyper-V

Dexuan Cui
2023-05-04T22:54:55Z

The patchset adds the Hyper-V specific code so that a TDX guest can run
on Hyper-V. Please review.

The v6 patchset is based on today's mainline (a1fd058b07d5).

The v6 patchset addressed Michael's comments on patch 5:
Removed 2 unnecessary lines of messages from the commit log.
Fixed the error handling path for hv_synic_alloc()/free().
Printed the 'ret' in hv_synic_alloc()/free().

@Michael Kelley: Can you please review patch 5?

@x86 maintainers:
If the patches look good to you, can you please take patch 1 and 2
into the tip tree?

@Wei Liu: I think patch 3, 4, 5, 6 should go through the Hyper-V tree
since they change the Hyper-V code.

If you want to view the patches on github, it is here:
https://github.com/dcui/tdx/commits/decui/mainline/v6

FYI, v1-v5 are here:
https://lwn.net/ml/linux-kernel/20221121195151.21812-1-decui@microsoft.com/
https://lwn.net/ml/linux-kernel/20221207003325.21503-7-decui@microsoft.com/
https://lwn.net/ml/linux-kernel/20230206192419.24525-1-decui@microsoft.com/
https://lwn.net/ml/linux-kernel/20230408204759.14902-6-decui@microsoft.com/
https://lwn.net/ml/linux-kernel/20230422021735.27698-1-decui@microsoft.com/

Thanks,
Dexuan

Dexuan Cui (6):
x86/tdx: Retry TDVMCALL_MAP_GPA() when needed
x86/tdx: Support vmalloc() for tdx_enc_status_changed()
x86/hyperv: Add hv_isolation_type_tdx() to detect TDX guests
x86/hyperv: Support hypercalls for TDX guests
Drivers: hv: vmbus: Support TDX guests
x86/hyperv: Fix serial console interrupts for TDX guests

arch/x86/coco/tdx/tdx.c | 122 ++++++++++++++++++++++-------
arch/x86/hyperv/hv_apic.c | 6 +-
arch/x86/hyperv/hv_init.c | 27 ++++++-
arch/x86/hyperv/ivm.c | 20 +++++
arch/x86/include/asm/hyperv-tlfs.h | 3 +-
arch/x86/include/asm/mshyperv.h | 20 +++++
arch/x86/kernel/cpu/mshyperv.c | 43 ++++++++++
drivers/hv/hv.c | 65 ++++++++++++++-
drivers/hv/hv_common.c | 30 +++++++
include/asm-generic/mshyperv.h | 1 +
10 files changed, 300 insertions(+), 37 deletions(-)

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2.25.1