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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2023-06-06 17:26:37 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-06-06 18:25:57 +0200 |
| commit | 75d090fd167acab4d7eda7e2b65729e877c0fd64 (patch) | |
| tree | 50b5ea974fee5ca5bee0dd213e090fd1e993db43 /arch/x86/Kconfig | |
| parent | c2b353ae24d6fecddcc599529ad8319282494781 (diff) | |
| download | lwn-75d090fd167acab4d7eda7e2b65729e877c0fd64.tar.gz lwn-75d090fd167acab4d7eda7e2b65729e877c0fd64.zip | |
x86/tdx: Add unaccepted memory support
Hookup TDX-specific code to accept memory.
Accepting the memory is done with ACCEPT_PAGE module call on every page
in the range. MAP_GPA hypercall is not required as the unaccepted memory
is considered private already.
Extract the part of tdx_enc_status_changed() that does memory acceptance
in a new helper. Move the helper tdx-shared.c. It is going to be used by
both main kernel and decompressor.
[ bp: Fix the INTEL_TDX_GUEST=y, KVM_GUEST=n build. ]
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230606142637.5171-10-kirill.shutemov@linux.intel.com
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 53bab123a8ee..5c72067c06d4 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -884,9 +884,11 @@ config INTEL_TDX_GUEST bool "Intel TDX (Trust Domain Extensions) - Guest Support" depends on X86_64 && CPU_SUP_INTEL depends on X86_X2APIC + depends on EFI_STUB select ARCH_HAS_CC_PLATFORM select X86_MEM_ENCRYPT select X86_MCE + select UNACCEPTED_MEMORY help Support running as a guest under Intel TDX. Without this support, the guest kernel can not boot or run under TDX. |