Messages in this thread | | | From | "Huang, Kai" <> | Subject | [PATCH 0/4] TDX host: kexec() support | Date | Wed, 31 Jan 2024 11:31:52 +0000 |
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Currently kexec() support and TDX host are muturally exclusive in the Kconfig. This series adds the TDX host kexec support so that they can work together and can be enabled at the same time in the Kconfig.
This follows Dave's suggestion to add the CC_ATTR_HOST_MEM_INCOHERENT attribute to unify both Intel and AMD, instead of having Intel/AMD specific checks around [1].
Hi Tom,
I've tested on my TDX testig machine but I don't have AMD machine to test. I highly appreciate if you or any AMD guy can help to review and/or test this series to make sure I didn't break anything.
Thanks a lot!
[1] https://lore.kernel.org/lkml/cbc9c527-17e5-4a63-80fe-85451394cc7c@amd.com/
Kai Huang (4): x86/coco: Add a new CC attribute to unify cache flush during kexec x86/virt/tdx: Advertise the CC_ATTR_HOST_MEM_INCOHERENT for TDX host x86/kexec(): Reset TDX private memory on platforms with TDX erratum x86/virt/tdx: Remove the !KEXEC_CORE dependency
arch/x86/Kconfig | 2 +- arch/x86/coco/core.c | 34 +++++++++- arch/x86/include/asm/tdx.h | 2 + arch/x86/kernel/machine_kexec_64.c | 18 ++++- arch/x86/kernel/process.c | 14 +--- arch/x86/mm/mem_encrypt_identity.c | 11 +++- arch/x86/virt/vmx/tdx/tdx.c | 101 +++++++++++++++++++++++++++++ include/linux/cc_platform.h | 16 +++++ 8 files changed, 183 insertions(+), 15 deletions(-)
base-commit: a6f0b57202b0ee50dc042bae16494008dc6dc992 -- 2.34.1
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