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Support TDX guests on Hyper-V (the x86/tdx part)
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Message
Dexuan Cui
June 20, 2023, 3:48 p.m. UTC
v8 is a rebased version of v7: v8 is based on tip.git's master branch, which has commit 75d090fd167a ("x86/tdx: Add unaccepted memory support"), so I have to rebase v7 to the commit and post v8. v7 is based on tip.git's x86/tdx branch. The two patches (which are based on the latest master branch of 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 v8 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 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/master/tdx/v8-x86-tdx-only 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 | 86 ++++++++++++++++++++++++++----- arch/x86/include/asm/shared/tdx.h | 2 + 2 files changed, 76 insertions(+), 12 deletions(-)