Messages in this thread | | | From | Dave Hansen <> | Subject | [GIT PULL] x86/tdx for 6.5 | Date | Mon, 26 Jun 2023 12:30:50 -0700 |
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Hi Linus,
Please pull some x86/tdx changes for 6.5. This includes a very minor cleanup and a fix for a race. The race has never been observed in practice but might allow load_unaligned_zeropad() to catch a TDX page in the middle of its conversion process which would lead to a fatal and unrecoverable guest shutdown.
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The following changes since commit 44c026a73be8038f03dbdeef028b642880cf1511:
Linux 6.4-rc3 (2023-05-21 14:05:48 -0700)
are available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_tdx_for_6.5
for you to fetch changes up to 94142c9d1bdf1c18027a42758ceb6bdd59a92012:
x86/mm: Fix enc_status_change_finish_noop() (2023-06-06 16:24:27 -0700)
---------------------------------------------------------------- - Fix a race window where load_unaligned_zeropad() could cause a fatal shutdown during TDX private<=>shared conversion - Annotate sites where VM "exit reasons" are reused as hypercall numbers.
---------------------------------------------------------------- Kirill A. Shutemov (3): x86/mm: Allow guest.enc_status_change_prepare() to fail x86/tdx: Fix race between set_memory_encrypted() and load_unaligned_zeropad() x86/mm: Fix enc_status_change_finish_noop()
Nikolay Borisov (1): x86/tdx: Wrap exit reason with hcall_func()
arch/x86/boot/compressed/tdx.c | 4 +-- arch/x86/coco/tdx/tdx.c | 62 ++++++++++++++++++++++++++++++--------- arch/x86/include/asm/shared/tdx.h | 11 +++++++ arch/x86/include/asm/x86_init.h | 2 +- arch/x86/kernel/x86_init.c | 4 +-- arch/x86/mm/mem_encrypt_amd.c | 4 ++- arch/x86/mm/pat/set_memory.c | 3 +- 7 files changed, 69 insertions(+), 21 deletions(-)
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