[PATCH v7 0/2] Support TDX guests on Hyper-V (the x86/tdx part)

[Dexuan Cui <decui@microsoft.com>]

The two patches (which are based on the latest x86/tdx branch in the tip
tree) are the x86/tdx part of the v6 patchset:
https://lwn.net/ml/linux-kernel/20230504225351.10765-1-decui@microsoft.com/

The other patches of the v6 patchset needs more changes in preparation for
the upcoming paravisor support, so let me post the x86/tdx part first.

This v7 patchset addressed Dave's comments on patch 1:
see https://lwn.net/ml/linux-kernel/SA1PR21MB1335736123C2BCBBFD7460C3BF46A@SA1PR21MB1335.namprd21.prod.outlook.com/

Patch 2 is just a repost. There was a race between set_memory_encrypted()
and load_unaligned_zeropad(), which has been fixed by the 3 patches of
Kirill in the x86/tdx branch of the tip tree:
  3f6819dd192e ("x86/mm: Allow guest.enc_status_change_prepare() to fail")
  195edce08b63 ("x86/tdx: Fix race between set_memory_encrypted() and load_unaligned_zeropad()")
  94142c9d1bdf ("x86/mm: Fix enc_status_change_finish_noop()")
  (see https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=x86/tdx)

If you want to view the patchset on github, it is here:
https://github.com/dcui/tdx/commits/decui/upstream-tip/x86/tdx/v7

Thanks,
Dexuan

Dexuan Cui (2):
  x86/tdx: Retry TDVMCALL_MAP_GPA() when needed
  x86/tdx: Support vmalloc() for tdx_enc_status_changed()

 arch/x86/coco/tdx/tdx.c | 123 +++++++++++++++++++++++++++++++---------
 1 file changed, 96 insertions(+), 27 deletions(-)

-- 
2.25.1